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Warwick, Rhode Island

Licensed Septic Companies in Warwick, RI

23 septic companies serve Warwick, Rhode Island, and 22 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).

Septic services in Warwick

Guides: Septic system installation · Installation cost · Pumping cost

23 septic companies in Warwick

  • Albert I Hendrickson

    307 Diamond Hill Road, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0645 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 639-4640

  • D.H. Merriam Landscaping

    P.O. Box 8794, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0658 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 952-9007

  • D'Ambra Construction Co., Inc.

    80 Centre of New England Blvd, Warwick, RI 02816 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1235 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1210 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 737-1300 d-ambra.com

  • Dennis Diffley Sewer Cleaning & Repair

    2650 Warwick Avenue, Warwick, RI 02889 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1327 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1864 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 737-0560

  • Deslandes Excavation

    126 Bellows St, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1958 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 601-0415 deslandesconstruction.com

  • Durand Septic Designs and Services

    39 Bayonne Avenue, Warwick, RI 02889 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1784 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 332-4597

  • Emelio DiLibero Jr.

    106 Pine Grove Ave, Warwick, RI 02889 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0619 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 322-1979

  • Fernando D Gomes

    55 Bleachery CT., Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1398 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 738-1294

  • J & O Plumbing, LLC

    903 Warwick Ave, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1499 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 996-9440

  • James E Feeney, III

    129 Shamrock Drive, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1255 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 595-7859

  • John M Perri

    537 Sandy Lane, Warwick, RI 02889 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1756 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 736-8313

  • Keith Compart

    46 Harvard Avenue, Warwick, RI 02889 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1504 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 787-8421

  • Kent Excavating, Inc

    159 Staples Avenue, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1161 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 639-1507

  • Kirby Brothers Construction

    132 Shamrock Drive, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1191 (Rhode Island Department of Environmental Management, verify)

    From their website: Installation

    (401) 732-0185 kirbybrosconstruction.com

  • Level Excavation Inc.

    217 Lucas Road, Warwick, RI 02818 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1272 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 439-4080

  • RJ Smith Construction

    79 Massasoit Drive, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1770 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 692-0138

  • RK Plourd Construction

    120 Brownlee Blvd., Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0928 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 864-4705

  • Ronald K Lewis

    60 Quaker Lane (USDA-NRCS), Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1522 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 822-8826

  • Russell A Catanzaro

    316 Love Lane, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1055 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 640-9544

  • Shalvey Bros Landscape, Inc.

    6 echo Drive, Warwick, RI 02886 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1043 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 921-0222 shalveybroslandscape.com

  • Stephen A Cary

    7 Englewood Lane, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1599 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 497-7344

  • William J Wilbur

    300 Jefferson Blvd. Suite 211, Warwick, RI 02888 · Kent County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0839 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 463-6600

  • Green Wastewater Solutions

    80 Kilvert St, Warwick, RI 02886 · Kent County

    From their website: Risers & lids

    (401) 737-7600 gwsne.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 Warwick 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 Warwick: common questions

How many licensed septic companies are in Warwick, RI?

23 septic companies serve Warwick, Rhode Island, and 22 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 Warwick?

22 listings in Warwick 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.