Lakewood basements usually flood in one of three ways: sewage or storm water backing up through a floor drain, water seeping through a foundation wall, or a failed sump pump or supply line. Lakewood runs combined sewers, which carry storm water and sewage in one pipe, so heavy rain can push water back up a basement drain. Shut the water off at the main, stay out of standing water near outlets and the panel, and call a crew; phones are answered 24/7.
Key takeaways
- Lakewood runs a combined sewer system, so one pipe carries both sewage and storm water, and heavy rain can push that mix back up a basement floor drain.
- In 2023 the city entered a federal consent decree over untreated discharges, and the complaint alleged at least 1,933 untreated sewage discharges since 2016.
- Water that rises through a floor drain is treated as contaminated, which changes who should enter the room and how materials are removed.
- Most pre-1940 Lakewood basements have stone or early concrete walls and no drain tile, so seepage and backup look different and need different fixes.
- A standard homeowners policy generally does not include sewer and drain backup, which is usually an added endorsement, so check before you need it.
- Fast drying limits mold, and a crew uses moisture meters and thermal imaging to find wet materials that are not visible.
What does a floor-drain backup look like compared with water through the wall?
A floor-drain backup rises from the drain itself, often with a sewage smell and debris, and it usually follows heavy rain. Water through the wall seeps along the base of the foundation or through a joint and tends to show as a damp line, white mineral staining or pooling against one wall.
The difference matters because it tells you where the water came from and how dangerous it is. If the water is coming up through the floor drain, the first suspect is the sewer side of the house, and the water should be treated as sewage until someone proves otherwise. Look for water in a floor drain or laundry sink that drains slowly or not at all, a toilet or shower on a lower level that gurgles, or a dirty film left on the floor after the water recedes.
Seepage through a wall is a different problem. The water enters at the base of a stone, rubble or block wall, runs down the inside face and spreads across the floor, often after a long wet spell rather than one storm. It can be clean at first, but it picks up dirt and contaminants as it moves across the floor, so it is treated as contaminated too. Photograph the wet line and the floor before you move anything, because the pattern helps the crew and your insurer tell the two causes apart.
Why do combined sewers back up in Lakewood?
Lakewood's sewers carry sanitary sewage and storm water in the same pipe. When rain arrives faster than the pipes and treatment can move it, the system fills, and the lowest openings in a house, usually the floor drain, take the pressure.
A combined sewer is a single system designed for both household waste and rainwater. In dry weather it works quietly. In a heavy storm, runoff from roofs, driveways and streets pours into the same pipes, and the flow can exceed what the system can carry. The result is an overflow somewhere in the network, and a basement drain sits at the lowest point of a house where that surge can come back in.
Lakewood's sewers also connect to the sewers of Cleveland and the Northeast Ohio Regional Sewer District along the city's southern and eastern edges, and flow can move in either direction during wet weather. A backup on your street is therefore not always a Lakewood-only problem. The city publishes a public overflow-event map showing where overflows have been recorded, which is a useful check after a storm. It does not tell you whether a particular house will back up, because the risk depends on the storm, the pipe and the house.
What has the city done about overflows since 2023?
In 2023 the city entered a federal consent decree over untreated discharges, and the work since then has focused on new treatment capacity, storage and pipe repair. The risk on any given night still depends on how hard it rains.
The US EPA settlement sheet describes a consent decree involving the EPA, the Department of Justice and the State of Ohio. The city agreed to build a high-rate treatment system and two large storage basins, and the complaint alleged at least 1,933 untreated sewage discharges since 2016. Those numbers describe the scale of the problem the city is working to fix, and they explain why sewer backups are a recurring event here rather than a one-time one.
The city has also relined a century-old interceptor, roughly 19,000 feet of pipe, which had been deteriorating and letting rainwater into the system. The city says storm-event inflow to its treatment plant has already fallen since that work. A further overflow storage tank is reported as planned for 2026. Separately, the Northeast Ohio Regional Sewer District runs Project Clean Lake, a long-term program to capture and treat more combined sewer overflow across Cleveland and the inner suburbs. This company does not work for NEORSD or Project Clean Lake, and the program's progress is not a reason to skip a basement check after a heavy storm.
Why are Lakewood basements so exposed to water?
Most of Lakewood's houses were built before 1940, and many have full basements, floor drains and stone or early concrete walls. The soil around them is slow-draining clay, and the lots are narrow enough that roof runoff has nowhere to go.
Lakewood's housing is mostly older stock, and the Cleveland double, a two-family house with one flat up and one down, is a common form. The basement in these houses is often shared by two households, and the furnace, water heater, washer and floor drain are all in it. Pre-1940 basements commonly have no drain tile around the footings and only a bulkhead or interior stair for access, so water that finds a way in has few places to go except across the floor.
The ground here is glacial till, a clay that sheds water instead of soaking it up. In a wet spring, the soil stays saturated for weeks, and groundwater presses on the walls. Narrow lots leave little room for runoff, and downspouts that discharge close to the foundation send water straight at the wall. Houses on the valley rims of the Rocky River and the creeks can also get hillside seepage through a basement wall, which is a separate job from a sewer backup and should be diagnosed as one. The city's own older housing stock also means that the first sign of trouble is often a stain on a ceiling in the flat above.
Is a basement flood covered by insurance?
A standard homeowners policy generally responds to sudden and accidental water damage, such as a burst supply line. Sewer and drain backup and flood usually are not part of the base policy, so check your own declarations page or ask your agent.
The Ohio Department of Insurance lists water damage from sewer backup or a basement leak among the typical exclusions on common homeowners forms, which means coverage often depends on an added endorsement or rider. Sewer and drain backup is usually an add-on endorsement, not part of the base policy, and it is the coverage most people do not have. Flood is a separate policy, through FEMA's National Flood Insurance Program or a private insurer. Coverage is decided by your insurer under your own policy, not by anything written on a web page.
If you rent in a double or a converted flat, the building belongs to the owner and your belongings are generally covered by renters insurance, not the owner's policy. Take photos and video before anything is moved, stop the water if you can do so safely, and call your insurer early. The crew can document the damage and provide moisture readings and photos for your claim. If you have a complaint about how an insurer handled a claim, the Ohio Department of Insurance takes complaints at 800-686-1526. See our insurance claims guide for the general pattern.
What does cleanup involve after a sewer backup?
Sewage-contaminated water is removed, wet porous materials are taken out, and the structure is dried until moisture readings return to normal. A crew finds hidden moisture with meters and thermal imaging rather than relying on what is visible.
Water from a sewer backup is classified as Category 3 under the ANSI/IICRC S500 standard, which is the most involved category. Carpet, pad, unsalvageable drywall, basement paneling and sometimes the bottom of the wall are removed, and the crew cuts flood cuts above the wet line so air can move inside the cavity. Anything porous that has been in contact with sewage is usually not worth saving. Children and pets should be kept out of the area until it has been cleaned and dried.
Drying uses air movers and dehumidifiers, and the crew re-checks readings until materials are dry. The emergency stage, which covers extraction and drying setup, is explained and approved before work starts. Repairs such as new drywall, trim and flooring are quoted separately after drying, because nobody can price the rebuild honestly until the wet area has been opened up. The price is confirmed on site before any work begins. For more on the cleanup, see our sewer backup cleanup page.
What about asbestos, lead and mold in an old basement?
Pre-1980s houses can contain asbestos in joint compound, textured ceilings, floor tile and pipe insulation, and pre-1978 houses fall under the federal lead renovation rule. Cutting into old materials after a flood calls for care and for checking before demolition.
Ohio EPA administers asbestos in renovation and demolition, so check with Ohio EPA and your local health district before disturbing suspect materials. For houses built before 1978, the EPA lead Renovation, Repair and Painting rule applies to work that disturbs painted surfaces, and readers should ask any contractor whether its crew holds lead-safe certification. Ask every company which certifications its technicians hold, and check any answer with the issuing body.
Mold is a separate concern. Ohio does not license mold remediation the way some states do, so the work is guided by industry standards, including ANSI/IICRC S520 and EPA mold guidance. Mold can trigger allergy and asthma symptoms in some people. Fast drying limits how far it spreads, and a crew that finds mold may recommend inspection or containment before rebuilding. IICRC is a non-government industry body that certifies individual technicians; it is not a licensing agency.
What should you do in the first hour?
Shut off the water at the main if you can reach it safely, stay out of standing water near outlets, the furnace and the electrical panel, and photograph everything before you move it. Then call a crew, and call a licensed plumber for any pipe or sewer repair.
If the water is still rising, turn off the electricity to the basement only if you can reach the switch without standing in water. Do not wade through sewage with bare feet, and keep children and pets away from it. Move valuables upstairs if it is safe to do so, and photograph the floor, the walls and the drain before anything is cleaned up. Those photos are the most useful thing you can give your insurer.
Restoration and plumbing are different trades. A crew can stop the water at the shut-off, extract it, tarp or board an opening, and clean and dry the space afterward. Fixing the pipe, the sewer line between the house and the main, or a sump pump is plumbing work, and Ohio licenses it. The state board licenses commercial plumbing contractors, and city building departments handle residential registration, so registration rules differ by city here. Ask any company which license it holds in the city where your house is, and check that with the building department. Phones are answered 24/7 and a crew is dispatched as fast as one is available, but no arrival time can be promised. You can read more in our water damage cost guide.
Frequently asked questions
Should I call a plumber or a restoration crew first?
Call a crew for the water, drying and cleanup, and call a licensed plumber for any pipe, sewer line or sump pump repair. Plumbing work is licensed in Ohio, and the state board licenses commercial plumbing contractors while city building departments handle residential registration. Ask any company which license it holds and check it with the issuing office. Stopping the water at the shut-off is useful whichever call you make first.
Is the water in my basement safe to walk through?
Treat water from a floor-drain backup as contaminated, because it can carry sewage. Do not wade through it barefoot, and keep children and pets out of the area until it has been cleaned and dried. If the water is near the electrical panel or outlets, stay out of it entirely. Photograph the area before anything is moved so the damage can be documented.
Will my insurance pay for a sewer backup?
Sewer and drain backup is usually an added endorsement, not part of the base homeowners policy, so check your declarations page or ask your agent. Coverage is decided by your insurer under your own policy. The crew can document the damage and provide moisture readings and photos for your claim. Complaints about how an insurer handled a claim can go to the Ohio Department of Insurance at 800-686-1526.
How fast can a crew get to my house?
Phones are answered 24/7, and a crew is dispatched as fast as one is available. No arrival time can be promised, because it depends on how many jobs are open across the area, including during a storm or a hard freeze. Stopping the water at the shut-off and keeping the area clear helps while you wait. The crew will explain the emergency stage before any work starts.
Can mold start if the basement is cleaned up quickly?
Fast extraction and drying are the best way to limit mold, because mold needs moisture to grow. Mold can trigger allergy and asthma symptoms in some people, so it is worth asking whether the crew will check for it after drying. Ohio does not license mold remediation the way some states do, so ask about the industry standards the crew follows, including ANSI/IICRC S520.
Who is responsible for the sewer line between my house and the main?
The sewer line from the house to the main is a plumbing job, and a licensed plumber handles the repair. Lakewood's Public Works department provides water and wastewater service to Lakewood addresses, so ask the city what it covers for your address before work starts. Your insurer may also ask what caused the backup, so keep any plumber's report with your photos.
Sources
This guide is general information for Cuyahoga County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.