| Company | Location | Certifications | Credential Score | License # |
|---|---|---|---|---|
| Act Engineers Inc | Robbinsville Twp, NJ | ClosureHHO Subsurface Evaluation | 63 | US00532 |
| Montrose Environmental Solutions Inc | Robbinsville Twp, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | 91 | US990568 |
| Oak Environmental Consulting and Services | Trenton City, NJ | ClosureSubsurface Evaluation | 63 | US985291 |
| Quick Environmental | Trenton City, NJ | ClosureInstallation-Entire UST System | 38 | US257658 |
| Sovereign Consulting Inc | Robbinsville Twp, NJ | ClosureSubsurface Evaluation | 63 | US01287 |
| Ssg Barco Inc | Ewing Twp, NJ | ClosureSubsurface Evaluation | 63 | US00031 |
| Usa Environmental Management Inc | Trenton City, NJ | ClosureSubsurface Evaluation | 63 | US01197 |
| Wham Engineering Services Inc | Robbinsville Twp, NJ | ClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | 82 | US00960 |
8 companies in the NJDEP UST certification program are based in Mercer County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.
Tell us what you need — we'll connect you with state-certified companies serving your area. No obligation.