True Core Restoration technician responding to a 24/7 emergency call in San Diego County
Category 3 Biohazard

Sewage Cleanup & Biohazard Response

Category 3 black water. Do not clean it yourself and do not run a fan on it. Call us.

TRUSTED BY HOMES & BUSINESSES ACROSS SAN DIEGO COUNTY

Overview

Category 3 black water. Full PPE, biohazard disposal, antimicrobial treatment, clearance verification.

Sewage is Category 3 water, the most contaminated classification in the IICRC standard. It carries E. coli, hepatitis, parasites, and bacteria that stay viable on surfaces long after the visible mess is gone.

What It Costs

Sewage cleanup prices on the affected area, how much porous material has to be removed and legally disposed of, whether a crawl space is involved, and the days of drying and air scrubbing required. It costs more per square foot than clean-water work because of the PPE, the disposal requirements, and the fact that far more material has to come out.

We scope on site, in writing, and bill your carrier directly when the loss is covered.

Do Not Run A Fan On It

The instinct to point a box fan at it is the single worst move. On clean water, airflow is your friend. On Category 3, moving air across contaminated material aerosolizes pathogens and pushes them into rooms that were completely unaffected. We have walked into jobs where a bathroom backup became a whole-house remediation because the homeowner did the reasonable-seeming thing for six hours before calling.

Same applies to the HVAC system. If the air handler is running while sewage sits in the house, shut it off. It is pulling from the affected space and distributing to every room with a register.

Get Help Now

Sewage backup in the house? Call True Core now. 24/7 biohazard response, full PPE crews, proper disposal, verified clearance.

Scope of Work

What's In Every Sewage Cleanup Call

Immediate Containment Before Anything Else

Sewage losses get containment and negative air before removal begins. Uncontrolled airflow across contaminated material is how a bathroom backup becomes a whole-house exposure.

Full PPE And Trained Crews

Suits, respirators, gloves, and boot covers, with a decontamination protocol on exit. This is a biohazard, and our crews are equipped and trained for it. You should not be in the space at all.

Complete Porous Material Removal

Carpet, pad, insulation, affected drywall, particleboard cabinetry, and any absorbent contents that took contact come out and go to proper disposal. Nothing porous that touched Category 3 water gets dried in place.

Cleaning, Antimicrobial, And Verification

Remaining hard surfaces get a full clean and an EPA-registered antimicrobial application, including inside wall cavities and under the subfloor where the water traveled. We verify before we close anything up.

Crawl Space And Under-Slab Attention

Sewage that reached a crawl space contaminates soil and the underside of the subfloor, and it will keep off-gassing into the house until it is dealt with. We pump, remove contaminated material, treat, and dry it.

How It Works

Our Step-By-Step Process

  1. Step 1

    Stop, Secure, And Contain

    First call: stop using every water fixture in the house, because each flush and each sink adds to the backup. Do not walk through the affected area and do not try to clean it. When we arrive we establish containment around the affected zone, seal HVAC registers, and set HEPA-filtered negative air before removal starts. We identify whether the backup came from your lateral, a main line issue, or a fixture failure, which matters for both repair and insurance. Anyone in the household with a compromised immune system, and any small children, should be out of the house.

  2. Step 2

    Extraction And Solids Removal

    Sewage and solids get extracted with dedicated equipment that never touches a clean-water job. Contents in the zone get triaged: hard non-porous items can be cleaned and salvaged, anything absorbent that took contact is documented, photographed, and disposed of. We are direct with you about the losses here, textiles, upholstered furniture, mattresses, and particleboard furniture that absorbed Category 3 water are not worth saving, and no responsible company will tell you otherwise.

  3. Step 3

    Contaminated Material Removal

    Carpet and pad come out. Drywall gets cut above the contamination line. Wet insulation comes out. Affected particleboard cabinetry and toe-kicks come out. If it reached the crawl space, contaminated soil and vapor barrier get removed and the underside of the subfloor gets addressed. Everything is bagged inside containment and disposed of per regulation. All of it is photographed and logged first, because your carrier pays against documentation.

  4. Step 4

    Cleaning And Antimicrobial Treatment

    Every remaining surface the water touched gets mechanically cleaned, then treated with an EPA-registered antimicrobial rated for this application. That includes framing, subfloor, slab, the interior of wall cavities, and the underside of the floor system if the crawl space was involved. Fogging alone is not treatment, surfaces get physically cleaned first. Air scrubbers with HEPA and carbon run throughout to handle both particulate and odor.

  5. Step 5

    Drying, Verification, And Handoff

    Once the space is clean and treated, structural drying runs with daily moisture logs to documented dry standard, exactly as on any water loss. We verify the space before closing anything, and on larger losses we bring in third-party clearance testing. Repairs are handled by your own contractor. You get the full documentation file: photos, disposal records, moisture logs, a written removal scope, and the Xactimate estimate, so whoever rebuilds is working from evidence rather than assumption.

24/7 Emergency Response

Ready For Sewage Cleanup?

Call now for 24/7 emergency response across San Diego County. IICRC-certified crews, insurance billed direct.

FAQs

About Sewage Cleanup

  • We would tell you no, and not to sell you a job. Category 3 water carries pathogens that survive on surfaces, household cleaners do not reliably neutralize them, and the biggest risk is that mopping and fanning spreads contamination into rooms that were fine. If it is a very small amount on a hard, non-porous surface and you are healthy and properly gloved, it is manageable. Anything that reached carpet, drywall, or the subfloor is not.

  • Sewer and drain backup is commonly excluded from standard homeowners policies but available as an endorsement, and many people have it without knowing. If the backup came from a failure inside your home's plumbing, it may be covered as normal water damage. We document the source carefully and bill the carrier directly when there is coverage.

  • Drywall wicks. Water at floor level pulls upward through the gypsum core and the paper facing, typically a foot or more, and the paper facing is an excellent food source for bacteria and mold. On Category 3 water the standard is removal above the documented wick line, not drying in place, because there is no way to verify the interior of the panel is clean.

  • If the job is done right, the odor is gone when the contaminated material is gone and the surfaces are treated, typically by the end of removal. Lingering odor after remediation means something was missed, usually in a wall cavity, under a subfloor, or in the crawl space. Persistent odor is a symptom we chase down, not something we mask with a deodorizer.

  • Hard, non-porous items can be cleaned and returned. Absorbent items that took direct contact, upholstery, mattresses, rugs, paper goods, and particleboard furniture, are not salvageable and go on the documented loss inventory for your claim. We photograph and itemize everything so you are reimbursed for what you actually lost.

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