How do I know if my grease hauler is licensed?

Your local wastewater utility keeps a list of approved haulers on their website. Ask the hauler for their city license number and verify it matches the list. Any hauler who cannot produce a current license number for your jurisdiction should be disqualified.

Should I always pick the cheapest grease hauler?

No. Price differences of 20 to 30 percent usually correlate with licensing status, disposal practices, and manifest reliability. A cheap hauler who illegally dumps FOG creates liability for the restaurant — the city can trace violations back to the generator even after the hauler disappears.

How to Choose a Grease Hauler (Without Getting Burned)

TL;DR — A bad grease hauler creates liability for your restaurant. Vet every hauler on licensing, disposal destination, insurance, manifest practices, and references before signing a contract. Ten questions can eliminate most risk.

Choosing a grease hauler sounds simple — call a number, pay a bill, the trap gets pumped. The reality is messier. The EPA and most cities can trace illegal FOG dumping back to the generating restaurant, even if the hauler committed the violation. Pick wrong and you could be named in an enforcement action long after the hauler has disappeared.

The 10-Question Hauler Vetting Checklist

1. Are you licensed by my city's wastewater utility?

Most cities maintain a public list of approved grease haulers. Ask for the hauler's city license number. Verify it against the utility's current list. If the hauler can't produce a current license for your jurisdiction, stop the conversation.

2. Where do you dispose of the FOG you collect?

Legitimate haulers dispose at a permitted receiving facility — typically a wastewater treatment plant with a FOG receiving station, a rendering plant, or a biodiesel processor. Ask for the specific facility name. A hauler who can't name a permitted destination is a red flag.

3. Can I see a copy of your pollution liability insurance certificate?

Reputable haulers carry pollution liability insurance covering accidental spills during transport and disposal. Typical coverage is $1 million per incident minimum. Ask for a current certificate with your restaurant listed or named as an interest. If they push back, walk away.

4. What documentation will I receive after each pump-out?

You need a written or electronic manifest at every service, including: hauler name and license number, truck identification, pickup date and time, volume pumped, disposal facility and destination, and driver signature. Cities increasingly require electronic manifests — ask whether the hauler files digitally and how you access your records.

5. Will you measure FOG and sludge depth at the start and end of service?

A compliant hauler measures depth with a sludge judge or dipstick before pumping (so you have proof you weren't over 25 percent) and after (to verify complete removal). These measurements should appear on the manifest. Haulers who pump without measuring can miss full evacuation and leave your trap over the threshold.

6. How much do you charge, and what's included?

Ask for a written per-service price. Clarify what's included: pumping, disposal fee, trip charge, wastewater certificate of disposal, after-hours premium, and emergency callout rate. Hidden disposal fees are a common complaint.

7. What's your average turnaround for emergency pump-outs?

Emergencies happen. A hauler who promises 24 to 48 hour emergency response in writing is valuable. Ask how they prioritize their regular customers vs. one-off calls.

8. Can I have three restaurant references in my city?

Specifically ask for references at similar establishments (size, cuisine, location). Call them. Ask whether manifests are always on time, whether there have been any compliance issues, and how the hauler handles disputes.

9. How do you handle FOG recycling?

Rendering and biodiesel are the two common downstream uses. Some cities give FOG credit or reduced rates if your hauler recycles. Even where they don't, a hauler with a recycling pipeline is usually more established.

10. What happens if one of my pump-outs is flagged in a city audit?

Haulers with solid documentation can help you respond to audits. Ask how they archive manifests and how quickly they can produce historical records. A hauler with a 5-year digital archive is a better bet than one who keeps paper only.

Red Flags to Watch For

Cash-only payments with no invoice.
No manifest provided at the end of service.
Unmarked truck without visible company name or DOT number.
Driver who can't name the disposal destination.
Pricing far below market (30 to 50 percent below local norm).
Refusal to provide a license number or insurance certificate.
Pressure to sign a long-term contract without reference checks.

After Selection: Ongoing Monitoring

Vetting isn't one-and-done:

Store every manifest. 3 to 5 years minimum per most city ordinances.
Spot-check annually: re-verify the hauler's license is current in your city.
Document any service issues in writing (missed appointments, incomplete pump-outs, missing manifests).
If the hauler loses their city license mid-contract, stop using them immediately and report to the utility.

For your city's approved hauler list, contact your local wastewater utility's FOG program — listed in the "Authority" field on each of our city requirement pages.

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.