The short answer
Health Risks from Sewage Exposure
Sewage is a mixture of water, human waste, and household chemicals. When a sewer pipe leaks, that mixture can spread bacteria like E. Coli and Salmonella, viruses such as norovirus, and parasites like Giardia. Direct contact with contaminated water or surfaces can lead to diarrhea, vomiting, stomach cramps, and fever.
Beyond the digestive system, you can also develop skin rashes or eye infections if contaminated water touches your skin or eyes. Breathing in airborne particles from dried sewage can irritate your lungs, especially for people with asthma or other respiratory conditions. The longer the leak goes untreated, the higher the chance of mold growth, which adds its own health concerns.
Signs of a Sewer Leak
A sewer leak often leaves clear clues. You may notice a persistent, foul odor resembling rotten eggs or waste, especially near drains, toilets, or in the basement. Look for dark stains on walls, floors, or ceilings, or pooling water that appears dirty or greasy. If you have a crawl space or subfloor, check for dampness or standing water there.
Another sign is an unexpected increase in your water bill, which can indicate a broken pipe. If you hear gurgling sounds from drains or toilets, that can signal a blockage or leak in the main sewer line. Acting quickly when you spot these signs can reduce the spread of contamination and limit the health risks.
- Foul, sewage-like smell in your home
- Dark or stained patches on surfaces
- Pooling water that looks dirty or has debris
- Gurgling noises from drains or toilets
- Unexplained increase in water usage
Protective Steps to Take Right Away
If you discover a sewer leak, keep everyone, especially children and pets, away from the affected area. Open windows to ventilate the space, but avoid direct contact with the contaminated water. Wear rubber gloves, boots, and a mask if you need to inspect the area or move items. Wash your hands thoroughly with soap and water after any contact.
Do not try to clean up large spills yourself, as improper handling can spread contamination and increase health risks. If you feel unwell, see a doctor. For a thorough cleanup, local water damage pros have the equipment and training to safely remove sewage, disinfect surfaces, and dry the area to prevent mold. They can also detect the source of the leak and help prevent future problems.
Cleanup and Disinfection Basics
Professional cleanup of a sewer leak involves removing all contaminated materials, including drywall, carpet, and insulation that cannot be safely cleaned. The pros use industrial-grade disinfectants to kill bacteria and viruses on hard surfaces. They also employ structural drying and dehumidification to remove moisture, which helps prevent mold growth.
The cost of cleanup often ranges from a few hundred to several thousand dollars, but it depends on the size of the leak, the extent of contamination, and the materials affected. Your insurance policy may help, but policies vary, and your insurer decides what is covered. Check your policy and document the damage with photos for your records.
- Remove and discard porous materials like carpet and drywall
- Disinfect all hard surfaces with EPA-registered products
- Use fans and dehumidifiers to dry the area completely
- Wear protective gear during any cleanup
- Check for mold growth in the days and weeks after
Preventing Future Sewer Leaks
Once the immediate leak is resolved, think about prevention. Have a plumber inspect your sewer lines for cracks or blockages, especially if your home is older. Avoid flushing items like wipes, paper towels, or grease, which can cause clogs and pressure that lead to leaks. Keep tree roots away from your sewer line, as roots can invade and damage pipes.
In areas with wet winters and dry summers, soil movement can stress underground pipes, so regular maintenance and knowing where your shutoff valves are located can help you respond quickly if a leak occurs. For peace of mind, consider scheduling a water damage inspection to catch potential issues early.
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (425) 407-5186Frequently asked questions
How long does it take to get sick after sewage exposure?
Symptoms can appear within 12 to 48 hours after exposure, depending on the pathogen. Some infections, like hepatitis A, may take a few weeks. If you develop diarrhea, vomiting, or fever after contact with sewage, see a doctor promptly.
Can I clean up a small sewer leak myself?
For a very small, contained spill, you can clean it with protective gear and a bleach solution. However, sewer water can seep into porous materials and create hidden health risks. If the leak is large or has spread, call local water damage pros for safe cleanup.
Does homeowners insurance cover sewer leak cleanup?
Coverage depends on your policy and the cause of the leak. Some policies cover sudden, accidental damage, but not gradual wear. Policies vary, and your insurer decides what is covered. Contact your insurance company to discuss your specific situation.