State guide
Rhode Island
Rhode Island’s septic program is run at the state level by RIDEM’s OWTS Program, not by county health departments. RIDEM describes three permitting stages—site suitability, design review, and installation inspections—and also publishes a statewide summary of municipal onsite wastewater programs.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- Who regulates septic permits
- Rhode Island regulates onsite wastewater through the Rhode Island Department of Environmental Management, Office of Water Resources, OWTS Program.
- Who can do the soil or perc test
- RIDEM licenses OWTS designers and soil evaluators, and Rhode Island-registered professional engineers may design septic systems; I did not find an official county-health-department perc-testing program.
- Official septic permit page
- Official page →
- Licensed evaluators or designers
- Official page →
- State fee
- $100.00 for the published Residential/Commercial System Suitability Determination application; statewide OWTS construction permit fee not identified on the pages I found.
Official resources in Rhode Island
Main state septic page with homeowner guidance, permit process links, and OWTS program contacts.
Portal and guidance page for submitting and tracking OWTS applications and related permit documents.
Official state search for OWTS permit applications and conformed permits by town and permit number.
RIDEM licensing page for OWTS designers and soil evaluators, with exam and portal information.
State summary showing which Rhode Island municipalities run local onsite wastewater management programs.
Key facts for Rhode Island
- RIDEM says its OWTS Program administers the state’s septic permitting program.
- RIDEM states all OWTS professionals, including designers and installers, must create an account in the new portal.
- RIDEM says Rhode Island-registered professional engineers are licensed to design septic systems in Rhode Island.
- RIDEM’s new-home fact sheet says septic systems must be designed by a DEM-licensed designer and installed by a DEM-licensed installer.
- RIDEM’s residential/commercial suitability application lists a $100.00 fee for that suitability determination.
- Rhode Island’s OWTS permit search covers applications received after 1968 and points recent-file searches to the OWR portal.
County septic and soil-evaluation offices in Rhode Island
| County office | city | phone | Details |
|---|---|---|---|
| Office of Water Resources OWTS Program | Providence | (401) 222-3961 | State OWTS permitting program for site suitability, design review, and installation inspections. |
| Permit Application Center | Providence | (401) 537-4014 | Provides in-person help for getting started with RIDEM’s permit application portal. |
| Onsite Wastewater Treatment Disposal | Providence | (401) 537-4479 | RIDEM compliance program that investigates septic-system complaints and referrals. |
* Not published: the official page doesn't list it. Call the office to confirm before you rely on it.
What to do next
- Start with RIDEM’s OWTS page and OWR portal before filing any building application.
- Hire a RIDEM-licensed designer or Rhode Island-registered PE early if you need a new system or repair design.
- Check RIDEM’s municipal program summary to see whether your town has added local septic management requirements.
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 Rhode Island's population center, for comparison only):
- Board of Health, Massachusetts · about 35 miles
- Public Health Division - Septic System Information, Massachusetts · about 45 miles
- North Central District Health Department — Windham Office, Connecticut · about 69 miles
- Call to confirm Ask the official office.RIDEM Onsite Wastewater Treatment Systems (OWTS)
Website →Phone: (401) 222-3961 (as listed on that page, checked Oct 4, 2026)Your city or county office: Local governments →Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the Rhode Island page on USA.gov can point you to the right office. - Know the current info? Tell us with a link to the official page.