Sewage Backup Cleanup: What Every Homeowner Should Know

A sewage backup is one of the most alarming and hazardous situations a homeowner can face. The smell alone tells you something is seriously wrong — but the real danger goes far deeper than what you can see or smell. Raw sewage contains a dangerous mix of bacteria, viruses, and parasites that can cause severe illness, and the damage to your home can escalate rapidly if not addressed immediately.

Understanding what causes sewage backups, the health risks involved, and what professional cleanup looks like can help you act quickly and make the right decisions when it happens to you.

What Causes a Sewage Backup?

Sewage backups don't happen without a reason. Some of the most common causes include:

• Clogged drain lines — Grease, hair, wipes (even "flushable" ones), and other debris build up over time and eventually block the flow of waste.
• Tree root intrusion — Tree roots naturally seek out moisture and can grow into sewer pipes, cracking or completely blocking them.
• Aging or collapsed pipes — Older homes with clay or cast iron pipes are especially vulnerable to deterioration, cracking, and collapse.
• Municipal sewer overload — During heavy rain events, the public sewer system can become overwhelmed, forcing sewage back up through the lowest drains in your home — typically floor drains, toilets, and basement fixtures.
• Sump pump failure — When a sump pump fails during a storm, groundwater and sewage can back up into the basement rapidly.
• Blockages in the main sewer line — A single blockage in the main line connecting your home to the municipal system can affect every drain in the house.

The Health Risks Are Serious

Raw sewage is classified as a Category 3 water intrusion — the most dangerous category in the restoration industry. It contains:

• Bacteria such as E. coli, Salmonella, and Leptospira
• Viruses including Hepatitis A and Norovirus
• Parasites such as Cryptosporidium and Giardia
• Toxic gases including hydrogen sulfide and methane

Exposure can cause severe gastrointestinal illness, skin infections, respiratory problems, and in serious cases, life-threatening conditions. Children, the elderly, and anyone with a compromised immune system are at especially high risk.

This is why sewage cleanup is never a DIY job. Even brief contact with contaminated water — through skin, eyes, or inhalation of airborne particles — can make you seriously ill.

What Not to Do After a Sewage Backup

When sewage backs up into your home, your first instinct may be to start cleaning immediately. Resist that urge. Here's what to avoid:

• Don't walk through the affected area without waterproof boots and gloves at minimum
• Don't use any plumbing fixtures until the source of the backup has been identified and cleared
• Don't run fans or HVAC systems — this can spread contaminated particles throughout your home
• Don't attempt to clean with household products — standard cleaners are not effective against the pathogens present in sewage
• Don't dispose of contaminated materials in regular trash — sewage-soaked items require proper biohazard disposal

What to Do Immediately

Acting quickly can significantly limit the damage to your home and reduce health risks. Here's what to do right away:

1. Keep everyone out of the affected area, including pets
2. Call a professional restoration company — sewage cleanup requires certified technicians and specialized equipment
3. Turn off electricity to the affected area if it's safe to do so without entering the space
4. Document the damage with photos before any cleanup begins — this is important for your insurance claim
5. Contact your homeowner's insurance to report the incident

How Burke Emergency Restoration Handles Sewage Cleanup

Our certified technicians follow a thorough, multi-step process to safely restore your home after a sewage backup.

Step 1: Emergency Response

We respond 24/7 — because sewage backups don't wait for business hours. The faster we arrive, the less damage spreads to walls, flooring, and structural materials.

Step 2: Assessment and Containment

We assess the full extent of the contamination and establish containment zones to prevent sewage from spreading to unaffected areas of your home.

Step 3: Water Extraction

Using industrial-grade pumps and extraction equipment, we remove all standing sewage water as quickly as possible.

Step 4: Removal of Contaminated Materials

Porous materials that have been saturated with sewage — including carpet, padding, drywall, insulation, and certain types of flooring — must be removed and disposed of properly. These materials cannot be safely cleaned and reused.

Step 5: Cleaning and Disinfection

All affected surfaces are thoroughly cleaned and treated with EPA-registered disinfectants designed to eliminate the bacteria, viruses, and parasites present in Category 3 water. This step is not complete until every surface has been treated — including subfloor, wall cavities, and structural framing if affected.

Step 6: Drying and Dehumidification

After disinfection, we use commercial-grade air movers and dehumidifiers to dry the space completely. Moisture left behind can lead to mold growth within 24 to 48 hours, creating a secondary problem on top of the original damage.

Step 7: Deodorization

Sewage leaves behind powerful, persistent odors. We use industrial deodorization equipment to neutralize odors at the source — not just cover them up with fragrance.

Step 8: Restoration

Once the space is clean, dry, and safe, we can restore it to its pre-loss condition — replacing flooring, drywall, insulation, and other materials that were removed during cleanup.

Does Homeowner's Insurance Cover Sewage Backup?

Coverage for sewage backup varies depending on your policy. Standard homeowner's insurance policies often exclude sewage backup unless you have a specific rider or endorsement. However, if the backup was caused by a sudden and accidental event — such as a burst pipe — it may be covered under your standard policy.

Burke Emergency Restoration works directly with insurance companies and can help you document the damage and navigate the claims process. We've helped many New Hampshire homeowners get the coverage they're entitled to.

Don't Wait — Sewage Damage Gets Worse Fast

Every hour that sewage sits in your home, the damage spreads further and the contamination deepens. Flooring, walls, and structural materials absorb sewage rapidly, and mold can begin to grow within 24 to 48 hours of water intrusion.

If you're dealing with a sewage backup in New Hampshire, call Burke Emergency Restoration immediately. We're available 24 hours a day, 7 days a week, and we'll respond fast to protect your home and your family's health.