Short answer: Most homeowners spend roughly $2,000 to $10,000 on sewage backup cleanup, according to Bob Vila’s cost guide. The price depends mostly on how many square feet got wet, what the water was, which materials were soaked, and how fast crews started. Raw sewage (blackwater) costs the most per square foot because it must be removed, cleaned, and disinfected, and porous materials usually have to be thrown away.
Nobody budgets for a sewage backup. It often happens at night, in a basement, and the first question after “is my family safe?” is “what is this going to cost?” This guide gives realistic ranges, explains why quotes differ, shows how insurance works, and helps you compare estimates without getting caught off guard.
Dealing with a sewage backup right now? Do not wait on pricing. Call (801) 750-2928 for 24/7 response across the Wasatch Front. We will tell you what to do first and what the job involves. See our sewage cleanup service.
Typical Sewage Cleanup Costs
Published ranges vary because every backup is different. These figures come from Bob Vila’s sewage backup cleanup cost guide, last updated in February 2024, and they are national averages. Prices have likely risen since, and Utah jobs can land above or below them.
| What it measures | Typical figure |
|---|---|
| Total cleanup for a homeowner | About $2,000 to $10,000 |
| Clean water (Category 1), per sq ft | About $3.50 |
| Gray water (Category 2), per sq ft | About $5.25 |
| Blackwater (Category 3), per sq ft | About $7.50 |
| Mold remediation, if it follows | About $2,225 on average |
The per-square-foot figures include materials and labor in that guide. They are a starting point, not a quote. Large or severe jobs can cost much more, and small, caught-early jobs can cost less.
What that looks like in real jobs
Here are simple examples using the blackwater rate of about $7.50 per square foot. These are our own illustrations of the arithmetic, not guaranteed prices:
| Affected area | Rough blackwater estimate at $7.50/sq ft |
|---|---|
| 100 sq ft (a bathroom and hallway) | About $750 |
| 300 sq ft (a basement room) | About $2,250 |
| 800 sq ft (most of a finished basement) | About $6,000 |
Real quotes add items the per-foot number does not capture well, such as removing and replacing drywall, flooring, and cabinets, afterhours response, and disposal. That is why the total range is so wide.
What Drives the Price
1. How much area is affected
More wet square footage means more labor, more equipment, and more materials to remove. It is the biggest factor.
2. The type of water
Water is sorted into categories based on contamination. Sewage is blackwater, the most contaminated category, so it needs protective gear, careful removal, and disinfecting. We explain the categories in our upcoming water damage categories guide (coming soon).
3. What got wet
- Hard surfaces like tile, sealed concrete, and finished stone can often be cleaned and disinfected.
- Porous materials like carpet, padding, drywall, insulation, and upholstered furniture often cannot be made safe after contact with sewage and must be removed and replaced.
If a backup soaked a carpeted, finished basement, cleanup costs more than the same volume of water on a bare concrete floor.
4. Where it happened
Basements and crawl spaces are harder to work in and often hold water longer. A backup in a main-floor bathroom is usually simpler than one in a finished lower level.
5. How fast crews started
Time matters. The EPA says to dry water-damaged areas and items within 24 to 48 hours to prevent mold growth, in its brief guide to mold, moisture, and your home. Waiting adds damage, odor, and mold, and each one adds cost.
6. Whether mold follows
If sewage-soaked materials stay damp, mold can grow. Bob Vila lists mold remediation at an average of about $2,225 on top of cleanup. Early drying is far cheaper. Our mold removal service handles it if it has already started.
7. Time of day
Emergency and after-hours calls may cost more. Quick response is usually still worth it, because delays tend to cost more than the premium.
8. The plumbing fix
Cleanup and plumbing repair are separate bills. The reason the sewage came back, such as a clogged main line, a root intrusion, or a failed pipe, has to be fixed by a plumber. That cost depends on the repair, so get a separate quote.
What a Professional Quote Should Include
A good estimate is itemized, so you can compare it with another one fairly. Look for:
- Emergency response and containment (isolating the area so contamination does not spread).
- Extraction and removal of standing sewage.
- Removal and disposal of contaminated carpet, padding, drywall, insulation, or other materials.
- Cleaning and disinfecting of surfaces that can be saved.
- Structural drying, including air movers and dehumidifiers, with moisture readings.
- Odor control.
- Documentation, with photos and drying records for your insurance claim.
- Rebuild or replacement (often a separate line or contract).
Ask what is not included. If one quote only covers extraction and another covers extraction, drying, and disposal, they are not comparable even if the total looks similar.
Questions to Ask Before You Hire
- Do you respond 24/7, and is there an extra emergency charge?
- Is the price per square foot, flat, or based on time and materials?
- What exactly does the quote include and exclude?
- Do you remove and dispose of contaminated materials, or only clean?
- How will you contain the area?
- Will you take moisture readings and share drying records?
- Do you work directly with my insurance company?
- How long will the work take?
Be wary of a price that seems far below the others. Sewage cleanup that skips containment, disposal, or disinfecting can leave health risks and bring mold back later.
Does Insurance Cover Sewage Cleanup?
Often not by default, and this surprises many homeowners. The Insurance Information Institute (Triple-I) says that sewer backups are not covered under a typical homeowners policy, and that this coverage must be purchased as a separate product or as an endorsement to the policy. It describes this coverage as usually low-cost. See its guide to which disasters are covered by homeowners insurance.
What that means for you:
- Check your policy today for a “sewer and drain backup” or “water backup” endorsement, before you need it.
- If you have it, call your insurer right away, take photos, keep receipts, and ask what limit applies. Some endorsements have limits that are lower than the full cost of a bad backup.
- If you do not, you may pay out of pocket. Ask your agent about adding the coverage.
- Standard flood insurance is a separate thing, and Triple-I notes that flood damage is excluded from standard homeowners policies.
- Do not throw away damaged items until your adjuster says you may, unless they are unsafe. Photograph everything first.
- Maintenance matters. Triple-I notes that policies do not cover damage from lack of maintenance.
We document our work with photos and drying records so your claim has what it needs. For more, see our upcoming guide on how insurance claims for property damage work (coming soon).
Ways to Keep Sewage Cleanup Costs Down
You cannot control the backup, but you can control some of the cost.
- Call right away. Faster response means less damage and fewer materials to replace.
- Stay out of the water. Do not walk through it or spread it. Sewage carries health risks.
- Document everything before cleanup begins.
- Do not try to dry porous materials yourself if sewage touched them. They usually have to go.
- Have the plumbing fixed first, so cleanup is not repeated.
- Compare itemized quotes, not just totals.
- Add a sewer backup endorsement if you do not have one.
- Know the warning signs of a failing sewer line: slow drains in several fixtures, gurgling toilets, and recurring clogs. A plumber can inspect the line before it backs up.
Safety: Why You Should Not Clean Up Raw Sewage Yourself
Raw sewage can contain bacteria, viruses, and parasites. Skin contact, splashes, and contaminated air and surfaces create real risks, especially for children, older adults, pregnant people, pets, and anyone with a weak immune system. Professionals use protective equipment, containment, and disinfectants matched to the job.
If a small amount of sewage-contaminated water has reached a hard floor, stay out and call for advice before you start. When in doubt, treat it as a professional job.
Pure Cleaning and Restoration: What We Do for Sewage Backups
When a sewage backup hits, you need speed, honesty, and documentation. Our team provides:
- 24/7 emergency response across the Wasatch Front.
- Containment, extraction, removal, cleaning, and structural drying under one roof.
- Documentation for your insurance claim.
- Follow-up cleaning, such as carpet cleaning for salvageable areas after the contaminated materials are handled.
- Support if the water spread, through our water damage restoration and basement flood cleanup services.
We are veteran-owned, based in Kaysville, and have served Utah since 2011. We cover Salt Lake, Davis, Weber, Utah, Summit, Wasatch, Morgan, Box Elder, and Cache counties. See our service areas.
For general water damage pricing, our water damage restoration cost guide explains how the same factors work for clean and gray water.
Frequently Asked Questions
How much does sewage cleanup cost?
Most homeowners spend about $2,000 to $10,000, according to Bob Vila’s 2024 cost guide. Blackwater cleanup runs about $7.50 per square foot in that guide, while clean and gray water cost less. Large, severe, or fast-spreading backups can cost more.
What is the cost per square foot for sewage cleanup?
Bob Vila lists about $7.50 per square foot for blackwater (Category 3), about $5.25 for gray water, and about $3.50 for clean water, including materials and labor. Actual quotes vary with the materials that were soaked and how much must be removed.
Why is sewage cleanup more expensive than regular water damage?
Sewage is contaminated, so crews need protective gear, containment, disinfecting, and safe disposal. Porous materials like carpet, padding, and drywall usually have to be removed instead of dried.
Do I need a sewer backup endorsement to get sewage cleanup paid for?
Typically not by default. Triple-I says sewer backups are not covered under a typical homeowners policy and that coverage must be purchased separately or as an endorsement. Check your policy for a sewer or water backup endorsement.
Who pays for sewage cleanup if the city sewer line backs up?
It depends on where the problem is, what caused it, and what your policy says. Call your insurer and your city or sewer district, and keep photos and records. A plumber can help identify where the blockage was.
Can I clean up sewage myself?
It is not recommended. Raw sewage can carry bacteria and viruses, and contaminated porous materials usually need to be removed. Professionals have the equipment and protective gear to do it safely.
How long does sewage cleanup take?
Small jobs may take a day or two. Larger jobs with drying and material removal take several days. Your restoration company can give you a schedule after inspecting the damage.
Do I need to replace carpet and drywall after a sewage backup?
Often yes. Carpet, padding, and drywall that touched sewage are porous and usually cannot be fully cleaned. Hard surfaces like tile and sealed concrete can often be cleaned and disinfected.
Final Thoughts
Sewage cleanup costs depend on how much area is affected, how contaminated the water is, what materials got wet, and how quickly cleanup begins. Most homeowners should expect a range of thousands of dollars, with the high end reserved for large or finished spaces. The best ways to protect your budget are to act fast, get itemized quotes, fix the plumbing problem, and check your insurance for a sewer backup endorsement before you need it.
Sewage in your home or business? Call Pure Cleaning and Restoration at (801) 750-2928 for 24/7 emergency response anywhere along the Wasatch Front.
Related Reading on Our Site
- Water Damage Restoration Cost Guide
- How to Prevent Costly Water Damage
- Sewer Backup: What to Do Right Now (add link once live)
- Water Damage Categories: Clean, Gray, and Black Water (add link once live)
External Sources Used
- Bob Vila, How Much Does Sewage Backup Cleanup Cost? (last updated Feb 2024; totals, per-square-foot rates by water category, mold remediation average): https://bobvila.com/articles/sewage-backup-cleanup-cost
- Triple-I (Insurance Information Institute), Which Disasters Are Covered by Homeowners Insurance? (sewer backup coverage, flood exclusion, maintenance): https://www.iii.org/article/which-disasters-are-covered-by-homeowners-insurance
- U.S. EPA, A Brief Guide to Mold, Moisture, and Your Home (24 to 48 hour drying): https://www.epa.gov/mold/brief-guide-mold-moisture-and-your-home
