State guide
New Jersey
New Jersey regulates most household septic systems under NJDEP’s septic rules, but permits for systems under 2,000 gallons per day are typically issued by local health departments rather than the state. NJDEP keeps the statewide rules and issues treatment works approvals for designs that cannot conform to the standards, while county and local health offices handle the common residential application path.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- Who regulates septic permits
- NJDEP sets the septic standards in N.J.A.C. 7:9A, but local health departments are the usual permitting authority for systems discharging less than 2,000 gallons per day.
- Who can do the soil or perc test
- New Jersey’s rules say the septic system designer must carry out or directly supervise and certify soil testing procedures and results; some local programs, such as Hunterdon County, also require a township witness.
- Official septic permit page
- Official page →
- State fee
- Not published by an official source we could verify. Ask the office.
Official resources in New Jersey
State overview page explaining that local health departments have jurisdiction over low-volume septic systems and linking the governing rules.
Explains the four approval paths and states that local health departments issue the common septic permits for systems under 2,000 gpd.
Directory residents can use to identify the correct local health department for septic permitting questions.
County permit page with septic applications, checklist, inspection forms, and a posted repair fee.
Key facts for New Jersey
- Local health departments issue permits for location, design, construction, installation, alteration, repair, and operation of septic systems under 2,000 gpd.
- NJDEP issues treatment works approvals for system designs that cannot conform with the standards.
- A septic system designer must carry out or directly supervise and certify all soil testing procedures and results.
- Hunterdon County’s checklist says the engineer conducts soil permeability tests and soil logs in the presence of a township witness.
- Burlington County posts both a septic construction/alteration permit application and a separate septic-and-well fee sheet online.
County septic and soil-evaluation offices in New Jersey
| County office | city | phone | Details |
|---|---|---|---|
| Sussex County Office of Environmental Health - Septic Systems Sussex | Hamburg | 973-579-0370 | County septic page with septic plan lookup/request links and contact for septic system matters. |
| Hunterdon County Health Department - Septic Disposal Systems Hunterdon | Flemington | Not published* | County page for site inspections, septic design review, installation inspections, repairs, certifications, and complaints; posts the septic repair application with an $80 fee. |
| Warren County Health Department - Septic Systems and Private Wells Warren | Oxford | Not published* | County health department program page for septic regulation, records, and malfunction complaints. |
| Burlington County Health Department - Environmental Health Burlington | Westampton | (609) 265-5515 | County septic and well program page with construction/alteration, repair, abandonment, compliance, and fee documents. |
* Not published: the official page doesn't list it. Call the office to confirm before you rely on it.
What to do next
- Start by identifying your local health department, because New Jersey’s routine septic permit is usually local, not state-issued.
- Hire a septic design engineer before field testing; New Jersey’s rules place soil testing and certification on the septic system designer.
- Ask the local office whether a witness is required for perc/soil work before you schedule the test date.
Not seeing your county office or county?
Not every county office publishes its rules online. Try these, in order:
- General Start with the statewide information above.
- Closest verified Nearest places where we have verified local data outside this state (distance from New Jersey's population center, for comparison only):
- Bucks County Health Department Sewage Program, Pennsylvania · about 48 miles
- Chester County Health Department Permits for On-Lot Sewage Disposal Systems, Pennsylvania · about 70 miles
- Chester County Sewage and Water Staff Coverage Map, Pennsylvania · about 70 miles
- Call to confirm Ask the official office.NJDEP Septic Systems
Website →Phone not shown: use the contact page on the official website above.Your city or county office: Local governments →Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the New Jersey page on USA.gov can point you to the right office. - Know the current info? Tell us with a link to the official page.