Sewage on the floor is two problems at once. One is the contamination, which has to come out of the building. The other is the pipe, and in Cobb County the answer to whose pipe it is, and which office takes the report, changes with the name printed on your water and sewer bill. Four separate public sewer systems operate inside the county line, and some addresses are on a septic tank and no public sewer at all.
Water Damage Cobb County is a free referral service that connects callers with independent local providers, and it is not a contractor. Call the number on this page and you are connected with a local sewage cleanup provider that serves Cobb County. The provider, not this site, looks at the damage, explains the work, prices it and does it.
The page runs in the order the questions usually arrive. First the safety steps for the next few minutes, then who to call for which part of the problem, which of the four sewer systems is yours, and what each one has published about who clears a blocked line. After that come the health facts, what has to be thrown out, how a professional cleanup runs, septic tanks, insurance, cost and how to check the provider you speak with.
First minutes: keep people out and stop the flow
Nothing on this list needs a tool or a product. It is drawn from EPA, CDC and a flood cleanup guide the Georgia Department of Public Health links for residents, and the order matters more than speed.
- Keep children and pets out. EPA’s flood cleanup guidance says children and pets are kept away from flood and sewage water. Close the door to the room if it has one.
- Do not touch the water with bare skin. EPA says any cut or scrape that touches sewage should be washed and disinfected immediately.
- Stop adding water. No flushing, no taps, no dishwasher, no washing machine. Every gallon sent down a drain in a house with a blocked line can come back up at the lowest opening.
- Cut electricity to the area only from a dry spot. CDC says to switch off the main power only if the panel can be reached from a dry place. If reaching it means stepping into standing water, CDC’s advice is to stay out and call an electrician.
- Leave the fans off. The flood cleanup guide linked by Georgia DPH warns against running fans in a house contaminated with sewage, because moving air can spread germs to other rooms. EPA likewise says no fans until the water is known to be clean. Restorers commonly advise leaving the central heating and cooling off for the same reason.
- Photograph it from the doorway. A few wide pictures and a few close ones, taken before anything is moved, are useful to the provider and to an insurer.
If you have to step in
CDC says anyone who has to enter floodwater should wear rubber boots, rubber gloves and goggles, and that clothes soiled by flood or sewage water are washed in hot water and detergent. CDC also says never to switch power on or off, or use an electric tool or appliance, while standing in water. If the only way to the shut-off or the panel is through the water, wait for help.
Sewage on the floor right now? Call to be connected with a local sewage cleanup provider serving Cobb County.
What this service is and what it is not
The call is free. It connects you with an independent provider, a separate business that does sewage cleanup in Cobb County. This site sends no crews, owns no equipment, holds no contractor license and guarantees no work, and nothing on this page is a promise made on a provider’s behalf.
That leaves one job with you: confirming that the provider you hire carries the license and insurance the work requires. The last section of this page lists the questions worth asking before anyone starts tearing out a floor.
The subject here is sewage and other grossly contaminated water. A burst supply line or a failed water heater is clean water at the start and is covered under emergency water removal in Cobb County. Creek water and storm runoff are on the page about flood damage restoration in Cobb County.
Who to call for what: utility, plumber, cleanup provider or septic pumper
A sewage backup often needs more than one phone call, because up to four different parties each handle a piece of it. The table sorts them by what you can see from where you are standing.
| What you see | Who to call | What they do |
|---|---|---|
| Sewage rising from a manhole in the street, or coming up indoors while no water is being used in the house | The sewer utility named on your bill | Checks the public line. Each system publishes its own contact for this, set out in the next section. |
| One fixture or one branch backing up, or a backup that appears only when you run water | A licensed plumber | Finds and clears the blockage in the building’s own line and repairs the pipe if it is broken. |
| Sewage on floors, in carpet, against walls or on belongings | A sewage cleanup provider, reached through the call button on this page | Removes the water and the contaminated materials, cleans, disinfects and dries the structure. |
| A septic tank or drain field backing up | A septic pumper, then a cleanup provider | Pumps the tank and deals with the system. Indoor contamination is a separate cleanup job. |
For county customers the instruction is published. The Cobb County Water System says to call its emergency response and dispatch line for a sewer backup in a home or in the street, and its sewer page carries the number. The county asks that the line be used only for that or for a broken water line that is gushing or leaking severely. Anything else goes to ordinary customer service.
The plumber and the cleanup provider are different trades, and Georgia treats them differently. State law says nobody may work as a master plumber or a journeyman plumber without a license from the state’s Division of Master Plumbers and Journeyman Plumbers, and it defines plumbing to include installing, maintaining, altering or repairing piping connected with sanitary drainage. Clearing or repairing a drain line is therefore licensed work.
None of the Georgia state sources reviewed for this page names a state license or certification specific to water damage restoration companies, the trade that sewage cleanup belongs to. That does not make the work unregulated in every respect, since the state does license the plumbing, electrical and general or residential contracting work that a job can include. It does mean a state license number cannot be the whole of your check on a cleanup company, which is why the questions near the end of this page matter.
Which call comes first depends on whether the flow has stopped. If sewage is still rising and nobody in the house is running water, the utility is the first call, because nothing indoors can be cleaned while the source is live. If the flow has stopped, the cleanup call and the plumber call can be made back to back.
Which sewer system is yours?
Cobb County is not one sewer system. The county runs the largest, and three cities run their own. The county, Marietta and Austell each publish a number for a backup or spill. Those numbers can change, so this page links to the official page that carries each one and does not reprint them.
| System | Who it serves | Where the number for a backup or spill is published |
|---|---|---|
| Cobb County Water System | Unincorporated Cobb County and customers in the cities of Acworth, Kennesaw, Mableton and Powder Springs | The county’s sewer page, as the emergency response and dispatch line |
| Marietta Water | Addresses inside the City of Marietta | The city’s wastewater overflow page, as the number for reporting a sewer spill |
| City of Austell, Sanitary Sewer Division | Customers of the Austell city system | The city’s Contact Public Works page: an office line for working hours and a separate water and sewer line after hours |
| City of Smyrna | City of Smyrna water and sewer customers | The number printed on your City of Smyrna bill |
The county system
The Cobb County Water System says it serves about 160,000 sewer customers. Its wastewater collection service covers unincorporated Cobb and also reaches customers in Acworth, Kennesaw, Mableton and Powder Springs. The City of Kennesaw sends water and sanitary sewer issues to Cobb County Water on its own Report a Concern page, and the City of Acworth does the same on its Power and Public Works page.
Marietta
Inside the city limits, sanitary sewer collection belongs to Marietta Water, the water side of Marietta Power and Water. The city gives a number for reporting a sewer spill on its wastewater overflow page, and it says its operation, maintenance and repair crews are available at all hours to respond to spills. Marietta Water handles water and sanitary sewer but not storm water, which is a Public Works matter covered further down.
Austell
Austell’s Sanitary Sewer Division looks after more than 51 miles of sewer, more than 700 manholes and two pump stations, and the city says the system carries about one million gallons of wastewater a day. For a sewer backup the city’s Public Works contact page lists a Public Works office line answered Monday to Friday from 8 a.m. to 5 p.m. and a separate after-hours number for water and sewer. Published numbers change, which is why this page links to the city’s list and does not copy it.
Smyrna
The City of Smyrna bills its own water and sewer customers. An after-hours sewer emergency number for the city could not be confirmed from an official source for this page, so none is printed here. Use the number on your City of Smyrna utility bill.
The name on the bill settles it
A mailing address does not tell you which system you are on. East Cobb is unincorporated: residents typically have Marietta addresses but live outside the Marietta city limits, and the county provides their water and sewer. A Smyrna or Austell mailing address calls for the same check. Read the utility name at the top of the bill before you call.
Whose pipe is it?
People search this as homeowner versus county, and the published answers differ by system. This section states only what each utility has put in writing.
Marietta is explicit. The city’s FAQ says nearly all service-line blockages come from material leaving the building or from tree roots on private property, and that removing the blockage is the property owner’s responsibility even where the line lies in the road right-of-way or in a sewer easement. In Marietta, then, clearing a blocked service line falls to the owner even where the blockage sits beyond the property line.
The county’s published wording is narrower. Its pipe ownership page says that where a permanent easement has been granted to Cobb County, the county owns and maintains the sewer line inside that easement, and it tells owners to check their plat or deed. The county pages read for this page do not say in words who owns the lateral that runs from a house to the main.
On the water side the county does draw a line: it owns and maintains the pipe from the water main to the meter, and the pipe from the meter to the building is the owner’s. That rule is about water service lines. It should not be stretched to cover a sewer lateral, so for a county address the sound course is to check your plat for easements and ask Cobb County Water System directly.
Austell publishes a water-side rule as well, saying the city’s responsibility ends at the water meter. For sewer laterals in Austell and for every pipe question in Smyrna, no published rule was confirmed for this page. Ask the city utility before you assume either way.
The practical point is the same on all four systems. Whoever turns out to own the failed section, the contamination inside the building still has to come out, and it does not wait for the ownership question to be settled.
Sewage in the house versus a spill in a creek
Search for sewage in Cobb County and much of what comes back is news about public spills, which are a different event from a backup in a bathroom. In July 2023 a broken sewer pipe spilled roughly 152,750 gallons of raw sewage into Sewell Mill Creek at East Cobb Park, Atlanta News First reported on July 8, 2023. Crews stopped it early that Saturday by setting up a bypass pump, and the county posted warning signs and tested the creek water daily.
A spill like that is handled on the public side. In the Sewell Mill Creek case it was the county that stopped the flow, posted the signs and sampled the water. At state level, the Georgia Environmental Protection Division runs an emergency response program for spills and releases of oil or hazardous materials, with a statewide toll-free line.
An indoor backup works the other way round. Clearing a blocked main does nothing for the floor of a basement. If you have seen sewage running from a manhole or into a creek, report it to the utility for that area using the table above. If it is inside your walls, the cleanup is a private job.
What sewage water is: Category 3
The restoration trade sorts water into three categories under its standard, the IICRC S500. Category 3, often called black water, is grossly contaminated water that can carry disease-causing, toxin-producing or otherwise harmful agents and can cause severe adverse health effects if touched or swallowed. Sewage is the textbook example.
Toilets cause the most confusion. General summaries of the categories put an overflow from a toilet bowl holding urine but no feces in Category 2, gray water, and class the water as Category 3 where sewage is involved. An overflow from the clean supply side of a toilet is a different thing from waste coming back up the drain. The category is not fixed either: water can deteriorate from one category to the next with time, temperature and the growth of microbes.
The category changes the whole job. EPA’s widely used table of what can be dried and kept after water damage applies only to clean water, and EPA says it does not apply when the source is sewage. EPA also states that when water is known or suspected to be contaminated with sewage, protective equipment and containment are required by OSHA and an experienced professional should be consulted.
Can a sewer backup make you sick?
Yes, it can, and the federal guidance is specific about how. A joint federal guide to cleanup after disasters, published on CDC’s site, says flood water that carried sewage indoors can expose a household to viruses, bacteria and parasites. CDC’s floodwater page lists the illnesses and injuries linked to floodwater exposure as wound infections, skin rash, gastrointestinal illness and tetanus.
Those lists describe what exposure can lead to. They do not say that everyone who walks past a wet floor becomes ill. The guidance is aimed at skin contact, especially through a cut, and at swallowing contaminated water, which is why the first-minutes list is about staying out and washing.
Some people should stay well clear. The same federal guide says children should not take part in cleanup. It also says people with asthma, other breathing problems or weakened immune systems should stay out of moldy spaces, and the Georgia Department of Public Health says molds can grow within 24 to 48 hours on a wet surface or material that is not dried or discarded. A room left wet with sewage can become both kinds of hazard inside two days.
Whether to stay in the house while the sewage is there depends on how much of it is affected and who lives there, and that is a judgment for you, with a doctor’s advice where anyone is vulnerable or has been exposed. This page is not medical advice. If someone has swallowed contaminated water or has a wound that touched it, call a doctor.
Cleaning comes before disinfecting
Two questions come up again and again: whether a household disinfectant spray deals with sewage, and how to disinfect a basement. The published guidance answers both the same way. FEMA says disinfectants are meant for surfaces that have already been cleaned, so a spray applied over soiled concrete is working on the dirt and not on the surface under it.
The cleaning step is plain. CDC’s instruction after flooding is to wash every wet item and surface with hot water and laundry or dish detergent. Only then does a disinfectant go on, whatever brand it is, used as its own label directs.
| Source | Bleach mix for hard surfaces | Note |
|---|---|---|
| CDC | One cup of household bleach in one gallon of water | For hard surfaces after a flood; CDC’s mold page gives the same amount as the upper limit |
| EPA flood cleanup FAQ, November 2012 | One cup of unscented household bleach in five gallons of water | For hard, non-porous surfaces after sewage contamination, used after soap and water |
| FEMA | No mix given here | A disinfecting bleach solution stays on the surface at least 10 minutes before it is rinsed or left to dry |
The two federal mixes differ by a factor of five, and both are published. Neither should be combined with anything else: FEMA says never to mix bleach with ammonia because the fumes are toxic, and EPA’s FAQ extends that to other cleaners. The Georgia Department of Public Health adds that a bleach solution may be used to disinfect after cleaning but does not stop mold from coming back.
Here is the limit of doing it yourself. Bleach and detergent work on hard surfaces such as sealed concrete and tile. They do not reach sewage that has soaked into carpet, pad, drywall or insulation, and those materials cannot be disinfected in place. EPA’s advice where damage came from sewage or other contaminated water is to bring in a professional with experience in buildings damaged by contaminated water.
What goes and what can stay
The dividing line is porosity. A material that absorbs water absorbs what the water carried. HomeAdvisor’s cost guide, updated June 17, 2026, puts it bluntly: with black water, everything porous it reaches takes up contaminants, and it names upholstered furniture, beds, carpeting, clothing and porous building materials.
| Usually goes | Often stays after cleaning and disinfecting |
|---|---|
| Carpet and carpet pad the sewage reached | Sealed concrete and concrete block |
| Drywall and insulation the sewage reached | Ceramic tile |
| Mattresses, pillows and upholstered furniture | Solid wood framing, once cleaned and dry |
| Furniture made of pressed particle material | Metal |
| Ceiling tiles | Hard plastic |
| Books, rugs and wall coverings | Glass and glazed fixtures |
The left column follows published guidance. CDC says drywall and insulation contaminated by sewage or floodwater are removed and discarded, not dried in place. EPA’s flood cleanup FAQ says upholstered furniture, mattresses and other soft or porous items that cannot be disinfected are discarded, and that a carpet or rug that cannot be thoroughly dried and cleaned after sewage contamination is discarded and replaced.
FEMA classes furniture made of pressed particle material as porous, in the same group as upholstery and bedding, where its rule is when in doubt, throw it out. It lists solid wood with the washable hard surfaces. EPA’s action for wet ceiling tiles is to discard and replace them.
Two points are easy to miss. Whatever happens to the carpet, EPA says the subfloor underneath has to be cleaned and dried too. And drywall wicks water upward, so the cut line a provider marks on a wall is usually above the visible tide mark, not on it.
The right column is not a guarantee. A cracked slab, unsealed grout or wood that has stayed wet for days can hold contamination, and the provider on site makes that call after looking at it. Sentimental or valuable items are worth raising before the tear-out starts, not after.
Call to speak with a local sewage cleanup provider about what can be saved and what has to come out.
How a professional sewage cleanup runs
Providers differ in method and equipment, and the one you are connected with will set out its own scope. What follows is the general sequence of a Category 3 job as the trade describes it, so that you can follow what you are being quoted for.
- Contain the area. The affected rooms are closed off from the rest of the house so that foot traffic and air movement do not carry contamination into clean rooms.
- Extract the water and solids. Standing sewage is pumped or vacuumed out before anything else is done.
- Remove porous materials. Carpet, pad, wet drywall, insulation and other absorbent materials the sewage reached are cut out and bagged. EPA’s remediation guide describes double-bagging unsalvageable moldy materials in 6-mil polyethylene, and contaminated debris from a sewage job is handled in the same spirit.
- Clean. Remaining hard surfaces are washed down, since disinfectant works only on a surface that is already clean.
- Disinfect. A disinfectant is applied to the cleaned surfaces and left for its contact time.
- Dry, with readings. Dehumidifiers and air movers come in only after the contamination is out. A 2007 trade summary of the S500 describes a drying job as checked at least once a day, with equipment moved, added or changed if the readings do not show drying.
- Verify. The provider confirms the structure is clean and dry before anything is closed up. Ask what that check consists of and ask for it in writing.
- Rebuild. New drywall, flooring and trim go in last. Some providers do this themselves and some hand it to a separate contractor.
One item is missing from that list on purpose. The S500 states that determining and correcting the underlying source of the water intrusion is the responsibility of the property owner and not the restorer. The plumbing repair is a separate job from the cleanup, and a cleanup done over a line that is still blocked will be done twice.
How long it takes depends on three things: how far the sewage soaked in, how much material has to come out, and whether the source has been fixed. FEMA’s published figure is that a wet or contaminated area usually takes two to three days to dry completely and that rebuilding should wait until then. That is a general figure from a federal brochure, not a schedule any provider has promised you.
Why backups happen in Cobb County
The county’s sewer network is large. Cobb County Water System describes about 2,683 miles of wastewater collection pipe, most of it 8 inches across and up to 72 inches along the Chattahoochee River, plus 46 miles of force main. It conveys an average of about 63 million gallons of sewage a day to the county’s water reclamation facilities.
The county inspects those pipes by camera and names what it often finds: broken pipes, offset pipe joints, root intrusion and improperly installed service connections. Marietta’s explanation for blocked service lines points the same way, at material leaving the building and at tree roots on private property. Tree roots appear on both lists.
Age is part of it. Census Bureau estimates for 2024 put about 53 percent of Cobb County’s housing units, roughly 170,000 of 319,000, as built between 1970 and 1999. A house from that period may still have its original private sewer line, which would now be roughly 27 to 56 years old. That is a reason to have the line looked at and not a statement about what it is made of.
Public mains age as well. In a notice posted in May 2026, Marietta Water said it was replacing about 3,800 linear feet of 8 to 12 inch sewer main near Wellstar Kennestone, on streets including Allgood Road, Cherokee Street and Church Street, with completion expected in early 2027. The city said the old line had reached the end of its service life.
Heavy rain and sewers have a long history here. According to Wikipedia’s account, Mableton was first incorporated in August 1912 and gave up that charter in August 1916 after a heavy flood overwhelmed its sewer system and left residents with an unexpected tax bill for repairs. It became a city again on May 11, 2023.
Septic tanks: a different chain of calls
Not every Cobb County address is on public sewer. For a house on a septic tank there is no utility to report a backup to. Cobb & Douglas Public Health says a septic system, unlike a public sewer system, must be maintained by the property owner.
That agency’s environmental health program handles septic system permits and contractor certification in Cobb County. Any installation, repair or modification of a septic system needs the department’s permit before the work starts. Pumping a tank is maintenance, but a repair to a failed line or drain field needs that permit first.
Not sure which you have? The City of Austell offers a quick test for its own customers: a separate sewer line item on the utility bill means city sewer, and no sewer charge means a private septic system. The same reading of the bill is a sensible first check anywhere in the county, followed by a call to the utility if the bill is unclear.
When a septic system backs up into the house, the order is pumper first, cleanup second. The water on the floor is sewage in every sense that matters for cleanup, so the safety steps, the Category 3 rules and the list of what gets thrown out apply unchanged. The Georgia Department of Public Health’s environmental health emergency page also points residents to EPA guidance on septic systems after a flood.
Storm water is a different problem
A storm drain backing up in the street, or a yard inlet overflowing toward the house, is not sanitary sewage, and different offices handle it. For the county, drainage problems outside the road right-of-way go to the county’s Stormwater Management office and problems inside the right-of-way go to Cobb DOT. In Marietta, storm drain problems are a Public Works matter, and the City of Kennesaw takes clogged storm drains through Kennesaw 311.
Storm water that has entered a house should still be treated with care. General summaries of the water categories list rising water from rivers or streams among typical Category 3 sources. In March 2026 the body that maintains the S500 said weather-related water is not Category 3 by default and has to be classed on the conditions actually found. The page on flood damage restoration in Cobb County covers that kind of loss.
Paying for it: what a standard policy leaves out
Many owners learn about this gap on the day of the backup. The Insurance Information Institute says sewer backups are not covered by a typical homeowners policy and are not covered by flood insurance either. The cover has to be bought as a separate product or as an endorsement to the homeowners policy.
The wording behind that is in the standard form. The sample HO-3 homeowners form the Institute publishes lists water that backs up through sewers or drains, or overflows from a sump, as one of the three parts of its water damage exclusion. The Institute also says some policies cover sewer and drain backups but many do not, and that a sewer backup rider can be bought. Your own policy may read differently from the sample, so read the declarations page or ask your agent.
Whatever the policy says, the record you keep is the same. Photograph every affected room before anything is moved, and photograph damaged items before they leave the house. Keep a list of what was discarded, the plumber’s invoice showing the cause, and the cleanup provider’s written scope.
Water Damage Cobb County does not deal with insurers and cannot tell you whether a claim will be paid. The insurer decides that from the policy. A provider may be willing to document the loss for you, which is a question to ask on the call.
Cost: published figures and what drives them
This site sets no prices and no Cobb County price list for sewage cleanup was found. The nearest published figure is national. HomeAdvisor’s cost guide, updated June 17, 2026, estimates cleanup at about $7.50 a square foot for black water, against about $5.25 for gray water and $3.50 for clean water.
The same guide puts water damage restoration of all kinds at $3,868 on average, with a typical range of $1,383 to $6,369. Those are HomeAdvisor’s national estimates on that date. They are not this site’s prices, not a provider’s quote and not a Cobb County figure.
- Area. The square footage the sewage reached, including the rooms it wicked into.
- Depth of soak. A spill mopped off sealed tile is a different job from sewage that sat in carpet over a wood subfloor.
- Material coming out. Every square foot of carpet, pad, drywall and insulation removed adds labor, disposal and later rebuilding.
- Access. A finished basement or a tight crawl space takes longer to work in than an open garage floor.
- The source. If the line is still blocked, the cleanup cannot be finished, and the plumber’s bill is separate from the provider’s.
The provider you are connected with prices the job after seeing it. Ask for the scope and the price in writing before work starts, and ask what would change the number once walls are opened.
Lowering the odds of a second backup
The sourced advice here is short. The county says its own camera inspections often turn up four defects: broken pipes, offset joints, root intrusion and improperly installed service connections. A licensed plumber with a drain camera can look for the same four in your private line.
That inspection is worth the most after a first backup, in a house built in the 1970s, 1980s or 1990s, or on a lot with large trees between the house and the street. If the camera finds roots or a break, you have a repair to plan. If it finds a clear line, the cause was more likely something sent down the drain or a problem on the public side, which is worth reporting to the utility.
Marietta’s own account of blockages supports the other half of prevention. If nearly all service-line blockages there come from material leaving the building or from roots, then what goes down the drains is one of the two causes within an owner’s control.
Renters, landlords and restaurants
A tenant with sewage in a rented home has the same safety steps and one extra: tell the landlord at once and follow it up in writing, with photographs and the date. Who pays for what turns on the lease and on Georgia law. This page gives no legal advice. The Georgia Department of Public Health’s indoor air quality page sends renters to Georgia Legal Aid and to the Georgia Landlord Tenant Handbook.
The health department’s reach is narrower than many people expect. Cobb & Douglas Public Health says it has no authority over mold in private residences or rental properties, and addresses mold only from a sanitation standpoint in the places it inspects, such as restaurants and hotels. A restaurant or hotel is a place the health department inspects, so a food business with sewage on the floor has a question for the department’s environmental health office that a homeowner does not.
Mold is the usual sequel to a sewage loss that was dried too slowly, in a rental or anywhere else. That subject has its own page, mold remediation in Cobb County.
Seven cities, seven different answers
The cleanup is the same job everywhere in the county. The first call about the pipe is not.
- Marietta. City sewer, with the owner responsible for clearing a blocked service line, and an end-of-life sewer main near Kennestone being replaced into early 2027. More on the page about water damage restoration in Marietta, GA.
- Smyrna. The city bills its own sewer customers. Confirm the emergency number on your bill. See water damage in Smyrna, GA.
- Kennesaw. The county system serves customers here. The city sends sewer calls to Cobb County Water and keeps storm drains for itself. See water damage restoration in Kennesaw, GA.
- Acworth. The county system serves customers here. The city runs the electric utility, Acworth Power, and sends water and sewer problems to the county. See water damage restoration in Acworth, GA.
- Powder Springs. The county system serves customers here. Homes on septic tanks answer to Cobb & Douglas Public Health for permits. See water damage restoration in Powder Springs, GA.
- Austell. City sewer with its own after-hours line. Check the bill for a sewer charge to learn whether you are on septic. See water damage restoration in Austell, GA.
- Mableton. The county system serves customers here. Check your plat or deed for a county sewer easement. See water damage restoration in Mableton, GA.
For the wider picture across all seven, including clean-water and storm losses, start at the main page on water damage in Cobb County.
Checking the provider, and what happens when you call
Because none of the Georgia state sources reviewed for this page names a license specific to this trade, your own questions carry more weight. Cobb County’s advice on hiring professional help for flood protection work is a sound model: verify that the professional holds the license, registration, bond and insurance that state and local laws require, ask for proof of insurance and references, get a complete written contract, and do not sign under pressure from a salesperson.
- Can you send proof of liability insurance before you start?
- How will the contaminated area be contained, and how is the debris bagged and disposed of?
- What exactly will be removed, and where on the wall will the cut line be?
- How do you verify that the structure is clean and dry, and will I get the readings in writing?
- Who does the plumbing repair, and does that person hold a Georgia plumbing license?
- Is the rebuild part of your scope or a separate contract?
- Can I have the scope and the price in writing before work begins?
The call itself is simple. It costs nothing, and it connects you with a participating independent provider that serves Cobb County. Describe where the sewage came from, how many rooms it reached, whether the flow has stopped and which utility is on your bill.
Many participating providers offer 24-hour emergency response. Availability depends on provider participation, location and demand and is not guaranteed, and no arrival time is promised here. Whatever the provider tells you about timing, price or scope is the provider’s commitment, so get it in writing.
Call now to be connected with an independent sewage cleanup provider serving Cobb County.
Questions people ask
Who do I call for a sewage backup in Cobb County?
It depends on the name on your sewer bill. Cobb County Water System, whose service reaches unincorporated Cobb and customers in Acworth, Kennesaw, Mableton and Powder Springs, tells customers to call its emergency response and dispatch line for a sewer backup in a home or street. Marietta publishes a number for reporting sewer spills, and Austell lists an office line and an after-hours water and sewer line. Smyrna customers should use the number on their city bill. Each official page is linked in the section on the four systems.
Should I call the county, a plumber or a cleanup company first?
If sewage is still rising and nobody is running water in the house, call the sewer utility first, because the problem may be in the public line. If only one drain is affected or the backup appears when you use water, a licensed plumber clears the building’s own line. The cleanup provider handles the contaminated floors, walls and belongings, and that call can be made as soon as the flow has stopped.
What should I do in the first few minutes after sewage backs up into my home?
Keep children and pets out of the room and do not touch the water with bare skin. Stop flushing and running water anywhere in the house. Switch off power to the area only if the panel can be reached from a dry spot, which is CDC’s rule. Leave fans off, because moving air can spread germs to other rooms. Photograph the damage from the doorway, then make the calls: the utility, a plumber or a cleanup provider, depending on what you see.
Can a backed-up sewer in my basement make me sick?
It can. A joint federal guide published on CDC’s site says flood water that carried sewage indoors can expose a household to viruses, bacteria and parasites, and CDC lists wound infections, skin rash, gastrointestinal illness and tetanus among the problems linked to floodwater exposure. Keep children and pets out, avoid skin contact, and wash and disinfect any cut that touched the water. Medical questions belong with a doctor.
Is it safe to stay in the house while the sewage is still there?
This page cannot answer that for a particular house. It depends on how much of the home is affected and who lives there. Federal guidance says children should not take part in cleanup, and EPA says children and pets are kept away from sewage water. If the affected room cannot be closed off, or anyone in the household is vulnerable or has been exposed, ask a doctor. Nothing here is medical advice.
Does a household disinfectant spray disinfect sewage?
Not on its own. FEMA says disinfectants are meant for surfaces that have already been cleaned, and CDC’s cleaning step is hot water with laundry or dish detergent first. A spray used over soiled concrete or tile is working on the dirt. No spray reaches sewage that has soaked into carpet, pad, drywall or insulation, which is why those materials are removed and not treated in place.
How do I disinfect my basement after a sewer backup?
Clean first. CDC’s step is to wash every wet surface with hot water and laundry or dish detergent, and FEMA says disinfectants are meant for surfaces that are already clean. For hard surfaces CDC gives one cup of household bleach in a gallon of water, and FEMA says a bleach solution stays on at least 10 minutes. Never mix bleach with ammonia. Carpet, pad, drywall and insulation the sewage reached cannot be disinfected in place.
Can I clean up a sewage backup myself?
A small spill on sealed tile or concrete can be washed and then disinfected by a careful adult in rubber boots, rubber gloves and goggles, following CDC and EPA guidance. Once sewage has reached carpet, drywall, insulation or furniture, the job involves removing contaminated material. EPA’s advice where damage came from sewage or other contaminated water is to bring in a professional experienced with contaminated water.
What is black water, and is sewage Category 3 water?
Black water is the common name for Category 3 water under the IICRC S500, the restoration trade’s standard. It means grossly contaminated water that can carry disease-causing, toxin-producing or otherwise harmful agents. Sewage is classed as Category 3. General summaries put an overflow from a toilet bowl holding urine but no feces in Category 2, and water can deteriorate from one category to the next with time, temperature and the growth of microbes.
Who is responsible for the sewer line: me or Cobb County?
In Marietta the city says clearing a blocked service line is the property owner’s responsibility, even where the line lies in the right-of-way or a sewer easement. Cobb County says it owns and maintains sewer lines inside a permanent easement granted to the county and tells owners to check their plat or deed. The county pages read for this page do not state who owns the lateral, so ask Cobb County Water System.
My home is on a septic tank. What should I do if it backs up?
There is no utility to report it to. Cobb & Douglas Public Health says a septic system, unlike a public sewer system, must be maintained by the property owner. Stop using water, keep people away from the sewage and call a septic pumper to deal with the tank. Any repair or modification of the system needs the health department’s permit before work starts. Sewage that reached floors or walls indoors is a separate cleanup job.
Does homeowners insurance cover sewage backup cleanup?
Often not. The Insurance Information Institute says sewer backups are not covered by a typical homeowners policy and are not covered by flood insurance either; the cover is bought as a separate product or as an endorsement. Some policies include it and many do not. Read your declarations page or ask your agent. This site does not deal with insurers and cannot say whether a claim will be paid.
How much does sewage cleanup cost in Cobb County?
No Cobb County price list was found, and this site sets no prices. As a national reference, HomeAdvisor’s guide updated June 17, 2026 estimates about $7.50 a square foot for black water cleanup, against $3.50 for clean water. The area affected, how far the sewage soaked in, how much material comes out and access all move the figure. The provider prices the job after seeing it.
What has to be thrown away after a sewage backup, and what can be saved?
Porous materials the sewage reached usually go. CDC says sewage-contaminated drywall and insulation are removed and discarded, and EPA’s flood cleanup FAQ says mattresses, upholstered furniture and other soft items that cannot be disinfected are discarded, along with carpet that cannot be thoroughly dried and cleaned. Hard surfaces such as sealed concrete, ceramic tile, metal and solid wood can often be kept after cleaning and disinfecting. The provider on site makes that call.
Can a sewage backup cause mold?
Yes. Mold needs moisture and something to grow on, and a sewage backup supplies both. The Georgia Department of Public Health says molds can grow within 24 to 48 hours on a wet surface or material that is not dried or discarded. Removing soaked porous materials and drying the structure promptly addresses both the contamination and the mold risk. The mold remediation page covers what happens if growth has already started.
How do I report a sewage spill or an overflowing manhole in Cobb County?
Report it to the sewer utility for that location. Cobb County Water System takes reports of a sewer backup in a home or in the street on its emergency response and dispatch line. Inside Marietta, the city publishes a number for reporting sewer spills on its wastewater overflow page. Austell lists an office line and an after-hours water and sewer line on its Contact Public Works page. Stay out of the water and keep children and pets away.
I rent my home. Who has to deal with a sewage backup?
Tell the landlord at once and follow up in writing with photographs and the date. Who pays for the plumbing repair, the cleanup and damaged belongings depends on the lease and on Georgia law, and this page gives no legal advice. The Georgia Department of Public Health’s indoor air quality page sends renters to Georgia Legal Aid and to the Georgia Landlord Tenant Handbook. The safety steps are the same for tenants and owners.
Is this service free, and who actually does the work?
The call is free. Water Damage Cobb County is a referral service that connects you with an independent local provider; it does no cleanup, employs no crews and guarantees no work. The provider you are connected with inspects, prices and carries out the job under its own name. It is your responsibility to confirm that the provider you hire has the license and insurance the work requires.
