Licensed Septic Companies in Johnston, RI
22 septic companies serve Johnston, Rhode Island, and 21 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 Johnston
Guides: Septic tank pumping · Septic system installation · Septic inspection · Drain field repair · Aerobic septic systems · Installation cost · Pumping cost
22 septic companies in Johnston
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A. Difazio Construction
132 Shun Pike, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1295 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Alfred Calcagni & Sons,Inc
34 Oakdale Ave, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0048 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Carmino Paliotta
14 Juniper Lane, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1363 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Chris Dansereau
132 Putnam PIike, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1008 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Dean Antonelli
4 Susan Circle, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1537 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Dig Build Inc.
81 Cherry Hill Road, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0109 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Donald Parrillo Jr.
2227 A Street, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1073 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Extreme Excavation, Inc.
9 Acorn Street, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1294 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Foster Excavation, Inc.
21 Green Street, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1554 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Frank Gaglione
98 Scenery Lane Unit 98, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0898 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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George O Tashjian
21 Washington Drive, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1236 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Michael W Susi
289 Borden Avenue, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0986 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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MJI Construction
239 George Waterman Road, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1899 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Morris Maglioli
572 Central Avenue, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1431 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Ronald J Ansaldi
10 Bella Woods Court, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1704 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Scott R Ringland
PO Box 19199, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1494 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Simone Excavating
153 Ostend Street, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1109 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Thomas F Menna
741 Greenville Ave., Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0864 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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Vincent A Cleri
105 Peck Hill Road, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0906 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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William Baldwin
1287 Central Ave., Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L0598 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
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DJR Construction, LLC.
46 Pine Hill Ave, Johnston, RI 02919 · Providence County
- Licensed: Rhode Island DEM Licensed OWTS (Septic) Installer · #L1880 (Rhode Island Department of Environmental Management, verify)
Per state license: Installation
No phone on the state list
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Wind River Environmental of Johnston, RI
141 Shun Pike, Johnston, RI 02919 · Providence County
From their website: Pumping · Installation · Inspection · Drain field · Aerobic systems · Risers & lids · Grease traps
No listings match those filters.
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 Johnston 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 Johnston: common questions
How many licensed septic companies are in Johnston, RI?
22 septic companies serve Johnston, Rhode Island, and 21 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 pump septic tanks in Johnston?
1 of the 22 listings in Johnston offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.
Which companies install septic systems in Johnston?
22 listings in Johnston 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.