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Newport County, Rhode Island

Licensed Septic Companies in Newport County, RI

72 septic companies serve Newport County, Rhode Island, and 72 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 Newport County

Guides: Septic system installation · Septic repair · Drain field repair · Installation cost · Pumping cost

72 septic companies in Newport County

Tiverton 26

  • .

    35 South Avenue, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0588 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1306 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 624-4427

  • 604 Main Road

    44 Gooseberry Lane, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0785 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 864-1170

  • Aquidneck Landscape Service

    202 Shove St, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1964 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (508) 717-9485 aquidnecklandworks.com

  • Arthur F Smith Jr

    70 Jacqueline Way, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1587 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 625-5122

  • Brennan Construction Septic

    1710 Eagleville Rd, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0941 (Rhode Island Department of Environmental Management, verify)

    From their website: Repair Per state license: Installation

    (401) 683-1116 brennanseptic.com

  • David L Sisson

    64 Pools Lane, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1725 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 226-1983

  • Demetno P Costa

    415 Lake Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1649 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (774) 263-2197

  • Desrosiers Landscaping/Construction

    1077 East Rd, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1326 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 266-8658

  • Freds Tree &Design Inc.

    51 King Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1872 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 418-1137

  • Home & Site Nursery

    1588 Bulgarmarsh Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1607 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 855-4911

  • James Pelletier

    409 East Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1729 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 640-9490

  • JDQ Excavating LLC

    125 N Brayton Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1954 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 266-6721

  • John H Marks

    24 Highland Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1813 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (774) 930-0889

  • Joseph Farias Jr.

    911 Bulgarmarsh Rd., Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0110 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 624-4917

  • JPS Landscaping & Excavating

    58 Wildrose Drive, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1665 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 640-5334

  • Kim E Litchfield

    154 Holly Circle, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1571 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 835-5401

  • Leon J Sylvia

    3998 Main Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1508 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 625-2413

  • North Tiverton Water Dept.

    241 Hilton Street, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1569 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 624-8432

  • Peter's Excavating & Landscape Constr.

    91 Brayton Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1821 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 301-1001

  • Quality Island Construction

    1246 Fish Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1013 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 624-6168

  • Raymond E Johnson

    691 Brayton Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1839 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 641-3707

  • Robert G Johnson

    436 Fish Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1519 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 293-0176

  • Ronald J Almeida

    509 Brayton Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1310 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (774) 488-4587

  • South Shore Excavation

    86 Hooper St, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1960 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 662-9163

  • Stephen J Oliveira

    217 Stafford Road, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1378 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 624-4753

  • Thomas J Principe Jr.

    Post Office Box 298, Tiverton, RI 02878

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0842 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 639-7370

Portsmouth 21

  • .

    104 Bayview Ave, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1945 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 835-1142

  • 13 Narragansett Ave

    75 Park Avenue, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1847 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 829-3651

  • All Island Landscape Inc

    2829 East Main Road, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1861 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1860 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1939 (Rhode Island Department of Environmental Management, verify)

    From their website: Installation · Repair

    (401) 445-8953 allislandlandscape.com

  • Aquidneck Landscape Service

    72 Kerr Rd, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1963 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 862-9553

  • Aquidneck Services LLC

    113 Hilltop Drive Portmouth, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1923 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 524-4134 facebook.com

  • Brian D Woodhead

    11 Ann Ave, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1672 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 682-1370

  • Daniel P Woods

    906 Anthony Road, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1845 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 835-5501

  • David J Zygiel Jr.

    33 Cedar Ave, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1804 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 499-3955

  • David Kehew

    143 Hedly Street, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0841 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 683-0362

  • DeCastro Excavating

    997 Middle Road, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1895 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 265-3139

  • E J Excavating Lllc

    77 Camara Dr, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1693 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 682-2172 ejexcavating.com

  • Edward T Lopes Jr.

    P.O. Box 294, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0927 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 842-9231

  • J.A.M. Construction Co,Inc.

    202 Chase Road Porstmouth, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1616 (Rhode Island Department of Environmental Management, verify)
    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1405 (Rhode Island Department of Environmental Management, verify)

    From their website: Drain field Per state license: Installation

    (401) 683-5656 jamconstruction.com

  • Joel W Camara

    155 Schoolhouse Ln, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1176 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 265-3364

  • Main Drain Septics, LLC

    32 Stubtoe Lane, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1368 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 683-5887

  • Main Street Construction

    PO Box 331, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1854 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 862-9800

  • Newport Septic and Constructioniello's Excavation LLC.

    Po Box 22, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1955 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 236-4805

  • Piece Anthony Farm, LLC

    2503 East Main Road, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1900 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 847-7090

  • PJR Construction

    PO Box 898, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1907 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 683-1804

  • Right Choice Landscaping

    173 Heidi Drive, Portsmouth, RI 02871

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1521 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 683-5207

  • William G Silvia

    0341 Mt. Pleasant Ave., Portsmouth, RI 02872

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1409 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (617) 592-2215

Little Compton 12

  • Adolf F Haffenreffer

    P.O.Box 472, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0940 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 635-2771

  • Arkins Construction

    PO Box 136, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1543 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 635-2329 arkinscorp.com

  • Christopher S Wilkie

    211 Long Highway, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1635 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 635-4341

  • Jesse Helger

    31 Willow Ave., Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1857 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (774) 292-9691

  • Jon C. Ibbotson Exc., Inc.

    150 Long Highway, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0567 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 640-4852

  • Kevin M Wilkie

    213 Long Highway, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1636 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 924-4453

  • Po Box 532

    86 Burchard Ave., Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1716 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 639-9027

  • Rego Earthworks, INC.

    16 K Mullin Hill Rd, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1867 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 835-4957 regoearthworksinc.com

  • Rich McGee & Son Excavating

    290 K West Main Road, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1621 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 635-1689

  • Richard R Chartier

    9 High Meadow Road, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1650 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 635-8600

  • Sisson Bros Landscape and Excavation

    271 Long Highway, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1975 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 330-8893

  • South Shore Septic

    142Y Colebrook Road, Little Compton, RI 02837

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1883 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 644-3061

Jamestown 6

  • Arthur S Clarke, III

    48 Soutwest Avenue, Jamestown, RI 02835

    • 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

    • 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

    • 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

    • 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

    • 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

    • 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

Middletown 5

  • All American Landscaping

    2 Aspinet Road, Middletown, RI 02842

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1875 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 258-9702

  • Andrew P Kent

    1101 Green End Avenue, Middletown, RI 02842

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1025 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 849-6541

  • Joseph F Medeiros

    1700 West Main Road, Middletown, RI 02842

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1574 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 849-8080

  • Mello Construction Company, Inc.

    87 Beacon Street, Middletown, RI 02842

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1265 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 847-3377

  • Trademark Builders LLC

    1 Trimble Road, Middletown, RI 02842

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1931 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 619-3690

Newport 1

  • CMT Septic Services, LLC

    7 Holten Ave, Newport, RI 02840

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1885 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (860) 490-1605

Prudence Island 1

  • Brad J Silvia

    0341 Mt.Pleasant Ave., Prudence Island, RI 02872

    • Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1408 (Rhode Island Department of Environmental Management, verify)

    Per state license: Installation

    (401) 487-1710

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 Newport County 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 Newport County: common questions

How many licensed septic companies are in Newport County, RI?

72 septic companies serve Newport County, Rhode Island, and 72 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 Newport County?

72 listings in Newport County 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.