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Block Island, Rhode Island

Licensed Septic Companies in Block Island, RI

7 septic companies serve Block Island, Rhode Island, and 7 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).

7 septic companies in Block Island

  • A. Joseph Sprague

    PO Box 988, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0630 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 466-2885

  • A.Transue Corporation

    PO Box 1558, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1771 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 466-5907

  • Gene A Hall

    911 Coast Guard Road, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1092 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 466-5694

  • Kevin Hoyt Construction LLC

    PO Box1661, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1467 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 375-4201

  • M.Ernst Excavating, Inc.

    Po Box 1015, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1498 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 741-5710

  • Paul O Filippi

    Post Office Box 967, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1480 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 744-2231

  • Reevco LLC

    Po Box 1984, Block Island, RI 02807 · Washington County

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1868 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 418-2661

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 Block Island 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 Block Island: common questions

How many licensed septic companies are in Block Island, RI?

7 septic companies serve Block Island, Rhode Island, and 7 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 Block Island?

7 listings in Block Island 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.