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How To Clean Up Sewage Damage?
If sewage has entered your property, you need to act carefully and quickly. Sewage carries dangerous pathogens, chemicals, and debris that can harm your health and cause long-term structural damage. This guide walks you through practical steps you can take immediately, how to clean up safely, when to call professionals, how insurance typically works, and how to reduce the risk of future problems.
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Why Act Now
When sewage water sits, it can absorb into drywall, soak building materials, and foster mold and bacteria in the structure. It is always fits, more expensive, and more complicated after costly restoration damages. Taking immediate action mitigates further complexities, dampens expenses, and infection, and stops permanent problems like mold and rot from forming.
How to know the risks and categories of sewage, and whom to call
To know the best risks before determining if it is best to clean the sewage themselves, knowledge of the categories of sewage can help in deciding if more professionals will be needed.
Sewage types
- Category 1 (Clean Water): is water that is coming from a sanitary source like a broken water supply line. It’s the least hazardous but can become contaminated if it comes in contact with contaminated surfaces.
- Category 2 (Gray Water): refers to water that has some contaminants in it (Dishwashers, washing machines) and may cause illness if it is ingested.
- Category 3 (Black Water): is the most hazardous as it constitutes highly contaminated sewage that comes from toilets, storm drains, and sewer systems. It is a serious health hazard and most of the time requires more specialized professionals to help with the remediation and sewage cleanup.
Table: Types of Sewage Quickly Explained
| Category | Source examples | Health risk | Recommended action |
|---|---|---|---|
| 1 | Broken supply line, rainwater from roof | Low (but can become contaminated) | You can often handle with PPE and standard cleaning |
| 2 | Dishwashers, washing machines, sink overflow | Moderate | PPE required; consider professional help if volume is large |
| 3 | Toilet overflow, sewer backup, floodwater | High | Professional cleanup strongly recommended |
If you think there is Category 3 contamination, please don’t try to do an extensive cleanup by yourself. Professional disinfection, waste removal, and drying equipment will be necessary.
Safety first: Protect yourself.
Your health comes first. Sewage contains bacteria, viruses, and parasites that can cause serious illness. Make sure you use the proper protective equipment and practices.
Personal Protective Equipment (PPE) Checklist
You should never enter contaminated areas without PPE. The following table lists the recommended items.
Table: Recommended PPE for Sewage Cleanup
| Item | Purpose |
|---|---|
| Nitrile gloves (double-gloving) | Chemical- and puncture-resistant hand protection |
| Rubber boots or waterproof shoe covers | Keep feet dry and avoid contamination spread |
| N95 or higher respirator (P100 recommended for heavy contamination) | Protects against airborne particles and some spores |
| Eye protection (goggles) | Prevents splashes into eyes |
| Disposable coveralls with hood | Protects clothing and skin |
| Hard hat (if structural hazards) | Protects from falling debris in damaged structures |
Always take off PPE in a way that avoids the spread of contamination. Place single-use items in a sealed bag. For reusable items, wash separately with hot water and a disinfectant.
Immediate steps to take after discovering
Once you discover the situation, take prompt and practical steps to contain and minimize the impacts while you determine what to do moving forward.
Stop the source of sewage if safe
If sewage is flowing, it is good to take steps to stop the flow. This could mean:
- Closing the main water valve if a plumbing leak is the cause.
- Shutting off the appliances or systems that are involved.
- Calling your municipality or sewer utility if the issue is a municipal backup.
Only attempt source control if it is safe. If you need to go into a heavily contaminated area to close a valve or appliance, it’s a good idea to put on PPE and maybe just wait for the professionals.
Isolate the affected area
To limit cross-contamination, close the contaminated area and block the doors. Turn the HVAC systems off, and prevent the contaminated air from spreading throughout the buildings. Place signs and barriers to let cross traffic know to avoid the area.
Document the damage
Capture the devastation caused from the sewage, impacted rooms, and any damage items on film. This documentation plays a crucial role for the professionals on site and for insurance claims, reflecting a true measure for the scope of work.
Containment and removal of contaminated materials
Persistent contamination and mold growth are to be avoided. Quick removal of porous materials is therefore necessary.
What to remove immediately
Remove the following items, if they are porous or hard to disinfect:
- Rugs, carpeting, and padding.
- Furniture and mattresses with upholstery.
- Paper, cardboard, and boxed items.
- Any soaked insulation and drywall, or gypsum board.
These items are often left unclean and un-sanitized, which is why they must be discarded. Place them in heavy duty bags, seal, and dispose of them as your local laws suggest.
Salvageability of Common Items
| Item | Likely outcome |
|---|---|
| Hard-surface furniture | Often salvageable after professional cleaning/disinfection |
| Upholstered furniture | Usually unsalvageable in Category 3 events |
| Solid wood flooring | May be salvageable if dried quickly and treated |
| Carpets and padding | Often unsalvageable in Category 3; padding nearly always lost |
| Electronics | Must be evaluated by a professional; avoid powering on |
Cleaning Non-Porous Materials
Non-porous materials/surfaces, are usually salvageable and disinfectable. These include metal, glass, sealed tile, and hard plastic.
- Use PPE to remove solids using shovels or scoops.
- Remove gross contamination by pre-rinsing with clean water if one is avaiable.
- Contact an appropriate disinfectant and follow instructions for the manufacturer and the appropriate amount of time to keep the disinfectant on the surface.
- Let it dry or use air movers and dehumidifiers to induce drying.
Certain cleaners and ammonia shouldn’t be mixed with bleach, as it can produce toxic gas.
What to Use and How for Disinfection
Microbial threats can be reduced with the right kind of disinfectant. Effective products with enough contact time should always be employed.
Dissinfectants and Solutions
- Household bleach (sodium hypochlorite): A common disinfectant. Typical concentration for disinfection is 1 cup (240 mL) of household bleach (5–6% solution) per 1 gallon (3.8 L) of water for general disinfection. Follow label guidance.
- EPA-registered antimicrobial cleaners: These are tested for efficacy and may be preferred for certain materials.
- Quaternary ammonium compounds: Often used in restoration, but check compatibility.
- Hydrogen peroxide-based cleaners: Effective on some surfaces and less corrosive than bleach.
Always follow product label instructions for dilution and contact time. Wear PPE when handling chemicals and ensure good ventilation.
Disinfection process overview
- Pre Clean- removing debris and organic materials that can inactivate the disinfectants is necessary.
- Apply Disinfectant- be sure to fully wet the surface using cloths, mops, or sprayers.
- Allow Required Contact Time- contact time is required to ensure disinfectants used can be effective.
- Rinse If Required- check the label to see if the product requires rinsing after contact time.
- Repeat As Necessary- for heavily contaminated areas.
For large scale contamination, professionals have access to industrial-strength disinfectants and specialized fogging devices for disinfectants to ensure effective and thorough covering.
Drying and Dehumidification
After cleaning and disinfecting, drying the materials quickly to prevent mold growth is critical. to effective drying, moisture meters, air movers, and dehumidifiers are necessary.
Drying Timeline and Equipment
- Air movers- an increase in the airflow across the wet surfaces is essential, and is vital for the drying of walls and flooring.
- Dehumidifiers- help to remove moisture in the air, and speeds the evaporation rate from the wet materials.
- Desiccant dehumidifiers- Useful in colder climates or areas that have very low humidity, and is overall very useful in a dehydrating system.Use moisture meters and infrared cameras for accurate dry-out monitoring.
The drying process will be highly dependent upon how saturated the materials are and the environmental conditions. The dry-out process should be continued until the moisture content returns to normal.
When to remove structural materials
Removing structural materials may be required when the drywall, insulation, or structural wood is severely saturated and cannot be dried out within the 48 to 72 hour timeframe. Mold and structural deterioration are invited when soaked materials are in place.
Preventing and monitoring for mold
Sewage contamination provides conditions for mold to form. Once within these conditions, mold can form within the 24 to 48 hour timeframe. To prevent the formation of mold, the area needs to be thoroughly cleaned, disinfected, and completely dried.
Mold growth prevention steps
- Discard all contaminated materials that are porous and can’t be cleaned.
- All surfaces should be disinfected and cleaned.
- Make sure that all materials are completely dry using industrial drying methods.
- Use humidity monitoring equipment and keep the room relative humidity below 50%.
- Over the following weeks, inspect for mold growth and re-clean the area if needed.
If mold is suspected or seen, professional mold remediation may be required. Mold can remain hidden in wall cavities, flooring, and behind baseboards.
Dealing with personal items and content salvage
Discarding and keeping items may be challenging. When making these decisions, prioritize safety and the ability to thoroughly disinfect and clean all items.
Common Items
- Clothing and linens. Wash with detergent in hot water and consider adding a sanitizer. Discard if heavily contaminated with sewage or if items are delicate.
- Soft toys and stuffed animals. Generally considered unsalvageable after Category 3 exposure.
- Books, paper, and documents. Must are irretrievably damaged. For significant legal documents, contact a conservation specialist.
- Electronics. Do not turn on until after an inspection by an electronics restoration specialist. Significant immediate professional drying and cleaning may preserve devices.
- Photographs. Handle with care and consult a conservation professional about restoration.
For insurance purposes, label items that are salvageable and document the process.
When To Call
Sewage contamination often requires professional restoration, especially for Category 3 events, large volumes, or if contamination level is unknown.
Reasons To Hire A Professional Team
- You’re dealing with Category 3 sewage, meaning there has been a sewer backup or flooding.
- Broad floor space and multiple rooms are involved.
- Contaminated porous building materials need to be removed.
- You need structural drying, mold remediation, or reconstruction.
- For insurance purposes, accurate documentation and certified cleaning are desired.
Companies like 24 Serv are equipped to handle such situations, providing rapid response service, and safety, containment, and restoration standards.
What to Expect From Professional Remediation
When dealing with professional restoration companies, the process mainly involves the immediate assessment to determine the extent of damage and the loss, followed with a plan to contain the problem and begin the mitigation and restoration process, including removal, drying, disinfection, constant monitoring, and reconstruction.
Typical Restoration Workflow
- Emergency response and assessment: Technicians determine the potential risks and losses and then draft a plan for the work to commence.
- Water extraction and sewage removal: Industrial-grade equipment is used to suck up any standing water as well as any other contaminated waste.
- Demolition of Unsalvageable Materials: Removal of damaged materials such as drywall, insulation, and flooring on a case-by-case basis.
- Cleaning and disinfection: Industrial-grade disinfectants are used, along with professional and thorough techniques.
- Drying and monitoring: Moisture is tracked with constant monitoring and adjustments are made to the equipment accordingly.
- Final repairs and reconstruction: Once complete, the reconstruction repairs the damaged areas of your property.
A trustworthy company also coordinates with your insurance adjuster and documents the entire process with before and after photographs.
About 24 Serv – Professional Restoration Assistance
24 Serv is located in Brooklyn, NY, and 24 Serv is able to provide removal and restoration services for sewage and water damage, fire issues, and mold problems with a 24-hour emergency response. 24 Serv has professionally trained staff for complete restoration and cleanup of the entire property.
- Address: 2433 Knapp Street, Unit B2, Brooklyn, NY 11235
- Phone: 833-824-7378
- Email: office@24serv.com
- Website: https://24serv.com/
24 Serv is able to provide professional remediation services and emergency response services. Their absolute goal is the thorough cleanup of the space in order to make the property safe.
Insurance, documentation, and reimbursement
Submitting insurance claims is common for a sewage cleanup. The process moves smoother when you have documentation and know your insurance policy.
Document everything
- Before you move or get rid of anything, take photos and videos of everything.
- Make a written list of the items that were damaged along with approximate values, and get receipts when you can.
- Hold on to copies of any communication with the restoration professionals and contractors.
- Make sure you get written estimates and invoices for cleanup and the drying, as well as the repairs.
Insurance considerations
- Look over your homeowner or commercial property policy for coverage related to sewer backups and water damage. Some policies might exclude sewer backups, and those might need a separate addition.
- If your property has flood damage, your property may require flood insurance that comes with the National Flood Insurance Program (NFIP), or you may want a private flood insurance plan.
- To give to your adjuster, get a scope of work and a cost estimate from the restoration company.
Being in close collaboration with your contractor and your insurer should speed up the process and ensure the necessary repairs are covered.
Health and legal considerations
There are legal obligations and health risks when exposed to sewage, and especially for businesses, this is something you should be aware of.
Health precautions
- If you are exposed to or around someone symptomatic, in the case of symptoms such as gastrointestinal distress, skin rashes, respiratory problems, or anything flu-like, you should seek medical counsel.
- Immunocompromised people, children, pregnant women, and the elderly are more vulnerable and should stay away from the contaminated area.
Legal and regulatory concerns
- It is important to comply with the local laws that are in place regarding the disposal of contaminated substances and wastewater.
- If the basement is an apartment or if the property is a rental or a commercial unit, you may have some tenant-landlord obligations that you must address in a more timely manner.
- You may need to obtain some documentation to protect against liability or defend against an enforcement action.
Cost factors and estimates
The costs are very dependent on the type of sewage, how contaminated it is, the type of materials you need to deal with, and if you need to do any reconstruction.
Typical cost drivers
There are multiple factors that drive the cost of sewage remediation:
- The category of the water, with Category 3 water being the most expensive.
- The total square footage impacted by the sewaged water.
- The extent of the demolition that needs to be done.
- The servicing needs, such as extraction, drying and dehumidification, etc.
- The mold remediation.
- The cost of local labor.
Also, smaller localized incidents that you can handle with do-it-yourself supplies and disposal can cost a couple hundred bucks. On the other hand, professional remediation for a basement or several rooms can cost several thousands, or tens of thousands. It is always recommended to have multiple estimates done and to ask for detailed scopes of work.
Preventing future sewage backups
The use of preventative measures can greatly lower the chance of sewage incidents, as well as limit the damage if a sewage incident does occur.
Practical prevention tips
- You can put in backflow prevention devices to stop sewer lines from flowing back into the building.
- Maintain Sewer Line – The sewer lines should be maintained through periodic inspections and cleaning.
- To prevent blockages in the sewer lines, do not flush non-degradable items or grease down the toilet.
- Proper Drainage – Grade the property and manage drainage in way that stormwater will be redirected away from the foundation.
- In all basements, use battery-backup sump pumps to control stormwater and minor seepage.
When it comes to regular maintenance and simple solutions, the time spent will surely save time, cost, and effort down the line.
Guide/checklist you can use
Use this guide in an orderly fashion when you need to take action about existing sewage damage.
- Emergency Injuries/Services – When you discover damage, ask yourself if any injury occurred, and if so, you will need to call emergency service.
- Closing Off- Area Before you enter the contaminated zone, make sure you have personal protective equipment and PPE.
- Document Damage – Photograph and document the damage for future
- Block Off Affected Rooms – Block-off and close any rooms that are not affected, supplemental to this you should turn off the HVAC.
- Non-Porous Items – Bring non-porous items that can be saved to a designated clean area and remove any porous items that have not been saved.
- Professional Restoration – If the restoration is required for category 3 sewage damage, or the damage is extensive, or you’re not certain how to proceed, it is best to call a professional
- Drying Damage – If safe to do so and you have fans and dehumidifiers, you can attempt to dry the damage to an extent.
- Insurance, Records – Keep any records you have, and be in contact with your insurance company about the damage.
Frequently asked questions
Can I clean sewage myself if it looks minor?
Assuming it is category 1 or a small confined spill and you have proper PPE and a disinfectant, you can self-serve these spills. In all other cases, category 3, large volumes, and if building, call in the pros.ls.
How long before mold appears?
You need to be aware that on damp materials, mold can grow within 24-48 hours. It’s critical that the contaminated porous materials are removed, and rapid drying occurs.
Is bleach always the best disinfectant?
Bleach works in many situations but needs to be diluted in a safe and sane way. In low and medium severity situations, bleach is a very good solution, in high severity situations, professionals will use other stronger EPA-registered products that are a better fit.
Will my insurance cover sewage cleanup?
Coverage can be complicated. Sewer backups and flood damage will often be in an insurance gray zone and will often need endorsements or separate policies. It’s good to document everything you can and get in touch with your insurer as soon as you can.
Final thoughts
Sewage damage is all around stressful, crisis, and time sensitive. The best outcomes involve rapid action on your part to protect your health and document as best as you can the damage before calling in the pros for the cleanup. 24 Serv is your best option if you are located in Brooklyn and requires immediate professional assistance as they offer emergency services and damage recovery. 24 Serv can be reached by calling 833-824-7378, emailingoffice@24serv.com, or visit https://24serv.com/. Their office is located in Brooklyn, NY, 11235, 2433 Knapp Street Unit B2.
Take the proper precautions and work your way down this list: ensure your safety and control the source if possible, document the damage and get the help of professionals for severe damage. Timely action will help mitigate health issues and give you the best likelihood of getting everything restored damage.
