Sewage backup: the underpayment playbook
Sewage backups are automatically IICRC S500 Category 3 (black water). That triggers mandatory contents removal protocols, antimicrobial treatment, and post-remediation testing. Carriers fight every step.
How carriers underpay sewage backup claims
- Disputing Category 3 classification to avoid mandatory contents removal
- Limiting porous-material removal (drywall, insulation, carpet pad) to 'wet line + 12"'
- Denying antimicrobial application and PRV clearance testing
- Capping at the sewer/water backup endorsement sublimit without scope justification
- Excluding subrogation work-up when the cause was a municipal main
The industry standard you can cite
IICRC S500
Standard for Professional Water Damage Restoration
IICRC (Institute of Inspection, Cleaning and Restoration Certification)
**Key provisions:** Defines water damage categories (1, 2, 3) and classes (1–4) by source and saturation level. Specifies drying chamber setup, daily psychrometric monitoring, anti-microbial application, and content manipulation. Section 12 covers structural drying methodology. Section 13 covers content restoration vs. replacement triage.
**How to cite in a carrier dispute:** Use when carrier disputes Category 2/3 designation, attempts to deny anti-microbial, or refuses content manipulation charges. Cite specific class to justify equipment count (dehus, air movers) and drying time.
Recent court opinions on sewage backup disputes
Smith v. Forge Creek at Flowers Plantation Homeowners Ass'n, Inc.
Savage v. Timsah
Authority to Obtain and Share Statewide Voter Roll Data
Warren v. Cielo Ventures, Inc.
Chong v. Mardirossian Akaragian LLP
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