| Company | Location | Certifications | Credential Score | License # |
|---|---|---|---|---|
| A1 Tank Guys | Verona Twp, NJ | ClosureSubsurface Evaluation | 63 | US1146704 |
| Ace Environmental Services LLC | Millburn Twp, NJ | ClosureSubsurface Evaluation | 63 | US296832 |
| All County Services LLC | Cedar Grove Twp, NJ | HHO Closure | 54 | US1073888 |
| Critical Energy Services | Roseland Boro, NJ | ClosureInstallation-Entire UST System | 63 | US1095596 |
| David B Johnson Pe | Essex Fells Boro, NJ | Cathodic Protection SpecialistClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | 91 | US01243 |
| Ev Banta Co Inc | East Orange City, NJ | ClosureInstallation-Entire UST System | 63 | US00120 |
| Groundwork Inc | Verona Twp, NJ | ClosureSubsurface Evaluation | 63 | US01010 |
| Michael Guerrieri Jr LLC | West Orange Twp, NJ | HHO Closure | 54 | US770748 |
| Sterling Environmental Services LLC | West Caldwell Twp, NJ | ClosureSubsurface Evaluation | 63 | US01108 |
| Tectonic Engineeinrg Consultants, Geologists& | Essex Fells Boro, NJ | ClosureInstallation-Entire UST SystemSubsurface EvaluationTank Testing | 82 | US226533 |
| Thomas J. O'Beirne & Co., Inc. | Roseland Boro, NJ | ClosureInstallation-Entire UST System | 63 | US833529 |
| Viridian Incorporated | Montclair Twp, NJ | HHO ClosureSubsurface Evaluation | 63 | US00556 |
12 companies in the NJDEP UST certification program are based in Essex County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.
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