Category 3 Black Water. Contained. Neutralized. Documented.
Sewage intrusions are classified as Category 3 'black water' events under IICRC S500 — among the most hazardous residential scenarios a homeowner faces. Paragon's biohazard-trained crews use EPA-registered antimicrobial agents, negative air pressure containment, and HEPA filtration to eliminate contamination at the pathogen level. We don't mask odors or wipe surfaces — we eradicate the biological hazard at its source and provide the documentation to prove it.
Understanding the Risk
Category 3 Black Water
Sewage contains Hepatitis A, E. coli, Salmonella, and dozens of other pathogens that survive on porous surfaces for days. Standard disinfectants applied to surfaces without proper containment and airflow management are insufficient. IICRC S500 Category 3 protocol requires full PPE, negative-air containment, bulk removal of contaminated porous materials, and EPA-registered antimicrobial fogging.
Surface vs. Structural Contamination
Bleach cleans surfaces. It does not reach contamination inside drywall, behind baseboards, or in subfloor assemblies — all of which sewage infiltrates within minutes of contact. Paragon removes all contaminated porous material (drywall, insulation, carpet, wood) that cannot be reliably decontaminated. This is the only method that eliminates rather than masks the hazard.
HOA and Multi-Unit Considerations
In condos, townhomes, and multi-unit buildings, sewage events often involve shared plumbing stacks and potential cross-contamination of neighboring units. Paragon coordinates with HOA management, provides containment documentation, and manages the scope review required for shared-wall situations common in South Bay beach communities.
Biohazard Containment Protocol
- 01Source identification and immediate isolation — we locate the originating blockage or backup point and stop further contamination from entering the structure.
- 02Negative air pressure containment with poly barriers isolates the affected zone, preventing cross-contamination to clean areas of the home through HVAC or air movement.
- 03Bulk removal of all contaminated porous materials — drywall, insulation, carpet, padding, wood framing — that cannot be reliably decontaminated to IICRC standard.
- 04EPA-registered antimicrobial fogging and surface disinfection of all remaining hard surfaces using hospital-grade agents, applied in proper sequence and dwell time.
- 05HEPA air scrubbing runs throughout the process to capture airborne biological particulate and prevent cross-contamination during demo and cleaning operations.
- 06Independent post-remediation clearance inspection and documentation package — air quality report, treatment log, and certificate of completion for insurance submission.
Complete Sewage Cleanup Capabilities
- Category 3 black water extraction and containment
- Negative air pressure zone isolation
- PPE-equipped biohazard crew (full Tyvek, respirators)
- HEPA air scrubbing throughout remediation
- EPA-registered antimicrobial fogging
- Contaminated drywall, insulation, and framing removal
- Subfloor sewage extraction and decontamination
- Crawlspace and under-slab access for ground-level events
- Odor neutralization (enzymatic and ozone treatment)
- Insurance-grade documentation and clearance report
- HOA and property management coordination
- 24/7 emergency response — on-site within 60 minutes
Sewage Cleanup — Frequently Asked Questions
- Can you save the flooring after a sewage backup?
- Hard, non-porous surfaces (tile, sealed concrete) can often be decontaminated and preserved. Porous materials — carpet, hardwood, laminate, vinyl plank, drywall — that have contacted Category 3 water must be removed and replaced. IICRC S500 is explicit on this standard. We cannot in good conscience attempt to 'clean' materials that will harbor pathogens.
- How long does the odor last after sewage cleanup?
- If properly remediated — meaning all contaminated porous material is removed and surfaces are treated with EPA-registered antimicrobials — odor should be eliminated, not just masked. Persistent odor after remediation almost always indicates incomplete removal. Our process includes enzymatic treatment and ozone treatment after bulk removal to address any residual odors.
- Do you handle the insurance paperwork?
- Yes. We provide a complete claim documentation package: photo log of all affected areas, moisture readings, scope of work, treatment log with product names and dwell times, and a certificate of completion. We work directly with all major carriers and can coordinate with your adjuster.
- Is it safe to stay home during sewage remediation?
- For minor, isolated events (single bathroom, contained area), it's often possible to occupy the rest of the home while we contain and remediate the affected zone. For larger events involving HVAC contamination, multiple rooms, or crawlspace involvement, temporary relocation is strongly recommended. We advise on this on a case-by-case basis at the initial assessment.
The Paragon Standard for Biohazard Events
- IICRC S500 Category 3 certified remediation — not just general contractors
- EPA-registered antimicrobials with documented dwell times — not bleach and hope
- All contaminated porous material removed — no cutting corners on scope
- Insurance-grade clearance documentation — protects your claim and your family
- 24/7/365 dispatch with 60-minute South Bay response time
Sewage Backup & Biohazard Cleanup — Service Areas
- Redondo Beach, CA
- Torrance, CA
- Manhattan Beach, CA
- Hermosa Beach, CA
- Lawndale, CA
- Gardena, CA
- Carson, CA
- Lomita, CA