Septic permits & rules in Hunterdon County: Septic permits in Hunterdon County are handled at the county level by the Hunterdon County Health Department's Office of Environmental Health, which performs site inspections, septic design review, installation inspections, certification of completed systems, and complaint investigations for all 26 municipalities. Permit application forms and a septic permit checklist for new construction and alterations are published on the county website; no contractor/pumper list is posted. Details: Hunterdon County Health Department — Office of Environmental Health.
| Company | Location | Certifications | License # |
|---|---|---|---|
| 1 Stop Environmental | Milford, NJ | — | |
| Allied Septic Service INC | Stockton, NJ | septage-haulingliquid-sewage-sludgedewatered-sewage-sludge | — |
| Castle Septic Services, Inc. | Milford, NJ | septage-haulinggrease-trap-wasteliquid-sewage-sludge | — |
| Delaware Valley Septic | Hampton, NJ | septage-hauling | — |
| Gary W. Gray Trucking, Inc. | Delaware, NJ | dewatered-sewage-sludge | — |
| RDR Farm, Inc. | Frenchtown, NJ | septage-hauling | — |
| Stinky'S | Lambertville, NJ | septage-hauling | — |
| The Pumper | Califon, NJ | septage-hauling | — |
8 companies in the NJDEP registered septage haulers list are based in Hunterdon County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.
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