A Loss Ratio That Was Killing Market Access
In Q1 2024, a Midwest commercial lines broker specializing in janitorial and facility services accounts received a non-renewal notice from one of their primary carriers for their exterior cleaning segment. The stated reason: the segment's pollution loss ratio had averaged 112% over the prior 24 months. The carrier was writing checks worth $1.12 for every $1.00 collected in premium. That's not a business.
The broker managed approximately 180 policies in this segment — pressure washers, window cleaners, commercial janitorial contractors. Nearly all pollution claims originated from the same event type: a runoff incident with no documentation of what was sprayed, where, or whether BMPs were followed. Without documentation, every incident became a claim. With documentation, most could be resolved as non-events.
The broker identified two options: exit the segment or change the documentation standard.
18 Months. 41 Points. Here's What That Looks Like.
The chart below shows the quarterly pollution loss ratio for the broker's exterior cleaning book from Q2 2024 (baseline) through Q3 2025 (18-month mark). The dashed vertical line marks when the PAR documentation requirement went into effect across renewals.
Why Documentation Changes the Claim Outcome
Most pollution claims from exterior cleaning contractors follow the same pattern: a runoff incident occurs, a complaint is filed, and the carrier receives a notice of loss with no documentation of what was sprayed, where the water went, or whether any BMPs were in place. Without documentation, the adjuster can't close the claim without investigating — which means legal fees, expert costs, and settlement pressure regardless of whether there was actual contamination.
PAR documentation changes the first step of that process. When the carrier receives the notice of loss, the insured can immediately provide a QR-verifiable report showing GPS coordinates, chemical log, pH readings before and after the service, water recovery manifest, and operator certification. In cases where the documentation shows BMP compliance, adjusters have closed claims at first notice — no investigation, no expert, no settlement.
The broker tracked this directly: before the PAR requirement, average claim cost for their exterior cleaning pollution book was $18,400. After the rollout, 63% of reported incidents closed at first notice. Average claim cost across all incidents dropped to $6,200 — a 66% reduction in average severity for incidents that were claimed at all.
From Losing a Carrier to Earning Premium Credits
By March 2025, nine months into the rollout, the broker's primary carrier came back to the table. The loss ratio trend was visible in the quarterly reports. The carrier offered a 6% premium credit for policies that met the PAR documentation compliance threshold — defined as a certified PAR submitted within 24 hours of each service.
A second carrier, reviewing the book for a new capacity offer, independently noted the documentation standard and matched the premium credit. By September 2025, the broker was marketing PAR documentation compliance as a named risk management service — not a regulatory checkbox, a product that produced carrier-recognized premium savings for their insured clients.
Replicate This for Your Book
The Midwest Broker case starts with a PAR documentation requirement at renewals. The partner kit includes model endorsement language, bulk pricing, and a client-facing one-pager that explains what a PAR is and why they need one.