Licensed Septic Companies in Rhode Island
The Septic Guide lists 495 septic companies and licensed septic professionals in Rhode Island; 485 are matched to the Rhode Island Department of Environmental Management license or certification lists (data as of October 2026).
Septic companies by county
Septic companies by city
- Tiverton26 listed
- Cranston23 listed
- Warwick23 listed
- Exeter22 listed
- Johnston22 listed
- Charlestown21 listed
- North Kingstown21 listed
- Portsmouth21 listed
- Coventry19 listed
- Cumberland18 listed
- North Scituate18 listed
- Wakefield17 listed
- Chepachet14 listed
- West Greenwich14 listed
- Westerly14 listed
- Little Compton12 listed
- Saunderstown10 listed
Septic services in Rhode Island
Counts of Rhode Island listings by service, from each business's own website or the type of state license it holds.
Who licenses septic work in Rhode Island?
Rhode Island licenses septic (OWTS) installers for three-year terms after an exam.
Credentials: OWTS installer license (3-year, exam).
Agency: Rhode Island DEM, OWTS program.
Licenses shown in this directory come from: Rhode Island Department of Environmental Management (517).
Other Rhode Island listings
Septic companies and licensed professionals in areas without their own page yet. Listings in the counties and towns above are on those pages.
Location not listed 5
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Robert W Costa
308 Elm Ave. Seekonk, RI 02771
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1809 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Jeffrey E Umrysz
62 Yetter Road Mystic 06355 860 536-0400, RI
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1413 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No phone on the state list
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Menici Corporation
26 Crestway Road (2) East Boston MA 617 208-9880, RI
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1921 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No phone on the state list
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Robert M Garlick
PO Box 81 Prudence ri 02872 401 683-4988, RI
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1566 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No phone on the state list
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Salvatore E Cherenzia IV
99 Mechanic Street, 2nd floor Pawcatuck ct 06379 860 629-6500, RI
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1780 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No phone on the state list
South Kingstown 1
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David P Coppola
3486 Post Road, South Kingstown, RI 03879
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1601 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No listings match those filters.
Septic companies in Rhode Island: common questions
How many licensed septic companies are in Rhode Island?
The Septic Guide lists 495 septic companies and licensed septic professionals in Rhode Island; 485 are matched to the Rhode Island Department of Environmental Management license or certification lists (data as of October 2026). 488 have a phone number listed; the others appear on the state list without one.
Do septic contractors need a license in Rhode Island?
Yes. Rhode Island licenses septic (OWTS) installers for three-year terms after an exam.
How do I check a septic license in Rhode Island?
Search the contractor on the Rhode Island DEM, OWTS program's lookup (https://dem.ri.gov/environmental-protection-bureau/water-resources/professional-licensing/owts-professional-licensing). Every license badge in this directory links to the agency's own lookup.