Grease Trap Cleaning in St. Louis, MO: Cost, Rules & Top Companies (2026)
Running a commercial kitchen in St. Louis? Staying on top of grease trap cleaning keeps you out of a sewer backup and compliant with Missouri's FOG rules. Here's what it costs in St. Louis, how often you're required to clean, the permit and regulation basics, and the local companies that handle it.
What Grease Trap Cleaning Costs in St. Louis
St. Louis prices near the national baseline; dense provider competition across the metro keeps rates competitive.
| Trap / interceptor size | Typical cost per service |
|---|---|
| Small trap (under 50 gal) | $115 – $240 |
| Medium trap (50–500 gal) | $150 – $475 |
| Large interceptor (500–1,500 gal) | $400 – $1,200 |
| Large interceptor (1,500+ gal) | $475 – $2,500 |
Typical ranges per service — your price depends on trap size, accessibility, and frequency. Recurring contracts usually run 15–30% below one-off rates. Estimate yours with the cost estimator or see the full pricing guide.
How Often You Must Clean It in St. Louis
MSD recommends cleaning at 60% capacity; minimum every 90 days for food service establishments (under MSD Ordinance No. 8472 (Sewer Use Ordinance)). The industry-standard 25% rule applies either way: clean before fats, oils, and grease reach a quarter of your trap's capacity, because past that point grease passes straight through to the sewer. High-volume kitchens (fryers, BBQ, seafood) often need service more often than the minimum.
St. Louis Grease Trap Requirements, Permits & Penalties
| Program | Metropolitan St. Louis Sewer District (MSD) FOG Program (official page) |
| Governing code | MSD Ordinance No. 8472 (Sewer Use Ordinance) |
| Permit / registration | Register with MSD (Sewer Use Customer Application + Food Service Operation Form); grease trap design must be MSD-approved before installation |
Always get a signed manifest at every service and keep your records — that's the proof inspectors ask for. For the full Missouri breakdown (hauler licensing, record retention, state penalties), see the Missouri grease trap regulations guide.
Top Grease Trap Cleaning Companies in St. Louis
Screened companies serving St. Louis and the surrounding metro:
- STL Grease Trap Services · 4.5★ · (314) 463-4080
- Gateway Cleaning Services · 4.4★ · (314) 714-5836
- Millstadt Rendering Company · (618) 538-5312
- Classic Aire Care · (314) 329-1943 (grease trap) / (314) 352-1111 (main)
See all grease trap companies in St. Louis → or get free quotes from several at once.
Frequently Asked Questions
How much does grease trap cleaning cost in St. Louis?
In St. Louis, expect roughly $150–$475 for small-to-medium traps and $400–$1,200 for larger interceptors per service. St. Louis prices near the national baseline; dense provider competition across the metro keeps rates competitive. Get 2–3 local quotes to compare — it's free.
How often do I have to clean my grease trap in St. Louis?
MSD recommends cleaning at 60% capacity; minimum every 90 days for food service establishments Regardless of the calendar, clean before FOG and solids reach 25% of capacity — past that, grease escapes to the sewer, which is what triggers violations.
Do I need a permit for a grease trap in St. Louis?
Register with MSD (Sewer Use Customer Application + Food Service Operation Form); grease trap design must be MSD-approved before installation. See the Missouri regulations guide for details.
What are the penalties for grease trap violations in St. Louis?
Fines are set by the local sewer authority and can escalate for repeat violations. Keep a signed manifest from every cleaning and your maintenance records on file — that's what inspectors ask for first.
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