What does BMP stand for in grease trap compliance?

BMP stands for Best Management Practices. In FOG compliance, BMPs are the staff training and operational procedures that reduce FOG at the source before it reaches the grease trap. Many cities now require documented BMP programs as a condition of the FOG permit.

Are BMP programs mandatory?

They're mandatory in roughly 30 percent of major US cities and rapidly spreading. Even where not mandatory, documented BMPs are the single most effective way to stay under the 25 percent rule and pass inspections. Inspectors explicitly ask for BMP training records in some jurisdictions.

The 12-Point BMP Checklist Every Kitchen Should Follow

TL;DR — Best Management Practices (BMPs) reduce FOG before it reaches your grease trap. Twelve core practices — from scraping plates to installing strainers to banning hot-water rinses of greasy pans — cut FOG load by 30 to 60 percent in typical kitchens. Document training events; inspectors in mandatory-BMP cities ask for records.

The cheapest way to pass FOG inspection is to never let FOG reach the trap in the first place. Best Management Practices (BMPs) are the set of operational habits, equipment choices, and staff training that remove FOG at the source. A well-trained kitchen can cut trap load by half — halving pumping costs and virtually eliminating violations.

The 12-Point BMP Checklist

Source Reduction

Dry-wipe before washing. Staff wipes all greasy pans, grills, and fryer baskets with paper towels before any water touches them. Paper goes to trash, not sinks.
Scrape plates to trash, not sinks. Food scraps (including grease and sauce) go in the trash can before dishes hit the pre-rinse or dishwasher.
Strainers on every drain. Fine-mesh strainers over every floor drain, 3-comp sink, and prep sink. Emptied to trash, cleaned daily.
Cold-water pre-rinse. Never use hot water to pre-rinse greasy pans. Hot water liquefies FOG and pushes it into the trap in suspension, bypassing the separation process.
Cooking oil collection. Used fryer oil goes to a dedicated collection container for rendering, never down any drain.

Equipment Choices

No food waste disposers on FOG-producing drain lines. Ground food increases solids load and can clog the flow control device. Most cities prohibit connecting disposers upstream of a grease trap.
Grease-trap-compatible dishwasher detergent. Avoid emulsifiers and surfactants that liquefy FOG and pass it through the trap. Check detergent labels for FOG-compliant certifications.
Working fryer oil filtration. Daily filter cycles extend oil life and reduce the volume that ends up in the drain.

Training and Documentation

New-hire BMP training. Every new employee receives a documented 30-minute BMP training session on day one, with a signed acknowledgment. Keep the signed sheets.
Quarterly refresher training. Short, practical refreshers for existing staff. Document dates, attendees, and topics covered.
Posted BMP signage. A laminated BMP quick-reference near every dish area and prep station. Most cities offer downloadable posters in multiple languages.

Self-Auditing

Weekly trap check. Use a clear sludge judge to measure FOG and sludge depth every Monday. Log results. If either layer exceeds 15 percent, schedule an early pump-out.

What Inspectors Specifically Check

When an inspector visits a BMP-compliance kitchen, they typically look for:

Posted BMP signage in visible locations.
Strainers in place and not clogged.
Recent training records (within the last 6 to 12 months).
A dry-waste trash setup appropriate for a kitchen (lid, separate from produce, liners changed regularly).
Absence of prohibited additives — enzyme bottles, emulsifier dispensers, or bioremediation products not approved by the city.
Oil collection bins outside or in designated area, with a rendering company pickup schedule visible.

Expected Impact on FOG Load

A rigorous BMP program typically produces:

30 to 60 percent reduction in FOG load to the trap.
20 to 40 percent longer intervals between required pump-outs (though city schedules usually set a hard ceiling, so savings depend on whether your schedule is driven by time or by the 25 percent rule).
Near-elimination of 25 percent rule violations in properly sized traps.
Reduced sewer back-up incidents inside the kitchen.

Getting Started

Print this checklist and walk your kitchen against it. Mark which items are already in place.
Pick the three gaps with the biggest impact (usually dry-wipe, strainers, and cold pre-rinse) and implement those first.
Draft a 30-minute training script and train current staff this week. Document it.
Check your city's specific FOG requirements to see if BMP documentation is mandatory. If yes, compile training records into a binder kept on-site.

Disclaimer: This article is for general informational purposes only. Always verify current requirements with your local wastewater authority before making compliance decisions. Last updated: March 2026.