The Septic GuideLicensed septic pros
List Your Business
Jamestown, Rhode Island

Licensed Septic Companies in Jamestown, RI

6 septic companies serve Jamestown, Rhode Island, and 6 of them hold a Rhode Island septic license or certification matched to the Rhode Island Department of Environmental Management list (data as of October 2026).

6 septic companies in Jamestown

  • Arthur S Clarke, III

    48 Soutwest Avenue, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0130 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 486-7940

  • M.T. Lott, LLC

    24 Southwest Avenue, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1215 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 423-1470

  • Richard Dussault

    67 Sloop Street, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0480 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 423-1575

  • Thomas M Gadoury

    1 Sail Street, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1501 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 965-6434

  • Tucker R Neale

    71 Weeden Lane, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1814 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 529-8688

  • Wolfe Construction - Excavation

    65 North Rd, Jamestown, RI 02835 · Newport County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1972 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 423-2600 wolfeconstruction-excavation.com

Septic licensing in Rhode Island

Rhode Island licenses septic (OWTS) installers for three-year terms after an exam. The Rhode Island DEM, OWTS program issues these credentials: OWTS installer license (3-year, exam).

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Jamestown and whether the permit fee is in their quote.

Rhode Island septic licensing: agencies, license types and how to check a license →

Septic companies in Jamestown: common questions

How many licensed septic companies are in Jamestown, RI?

6 septic companies serve Jamestown, Rhode Island, and 6 of them hold a Rhode Island septic license or certification matched to the Rhode Island Department of Environmental Management list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.

Who licenses septic contractors in Rhode Island?

Rhode Island licenses septic (OWTS) installers for three-year terms after an exam. The licensing body is the Rhode Island DEM, OWTS program.

Which companies install septic systems in Jamestown?

6 listings in Jamestown install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Rhode Island license.

How do I check a septic contractor's license in Rhode Island?

Use the Rhode Island DEM, OWTS program's lookup (https://dem.ri.gov/environmental-protection-bureau/water-resources/professional-licensing/owts-professional-licensing) and search the contractor's name or license number. Our guide to checking a septic license walks through it.