Licensed Septic Companies in Washington, NH
8 septic companies serve Washington, New Hampshire, and 8 of them hold a New Hampshire septic license or certification matched to the New Hampshire Department of Environmental Services, Subsurface Systems Bureau list (data as of October 2026).
Septic services in Washington
Guides: Septic system installation · Installation cost · Pumping cost
8 septic companies in Washington
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Aaron Wechsler
893 Valley Rd, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Designer and Installer · #04821 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation · Perc testing
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Joseph J Batcha III
48 Garfield Rd, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05816 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Marc Longval
4812 E Washington Rd, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #03702 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Noah F Chidester
132 Millen Pond Rd, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05729 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Roger Cullen
Po Box 478 Washington, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04638 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Shawn Atkins
504 South Main St, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04651 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Marc R Dube
188 Washington Hts Rd, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05758 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Mark Morrissette
488 Washington Dr, Washington, NH 03280 · Sullivan County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04412 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
No listings match those filters.
Septic licensing in New Hampshire
New Hampshire requires a NHDES permit to design or install a septic system; the Subsurface Systems Bureau publishes the list of permitted designers and installers. The NH Department of Environmental Services, Subsurface Systems Bureau issues these credentials: Permitted installer (RSA 485-A:36); Permitted designer.
Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Washington and whether the permit fee is in their quote.
New Hampshire septic licensing: agencies, license types and how to check a license →
Septic companies in Washington: common questions
How many licensed septic companies are in Washington, NH?
8 septic companies serve Washington, New Hampshire, and 8 of them hold a New Hampshire septic license or certification matched to the New Hampshire Department of Environmental Services, Subsurface Systems Bureau 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 New Hampshire?
New Hampshire requires a NHDES permit to design or install a septic system; the Subsurface Systems Bureau publishes the list of permitted designers and installers. The licensing body is the NH Department of Environmental Services, Subsurface Systems Bureau.
Which companies install septic systems in Washington?
8 listings in Washington install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their New Hampshire license.
How do I check a septic contractor's license in New Hampshire?
Use the NH Department of Environmental Services, Subsurface Systems Bureau's lookup (https://www.des.nh.gov/land/septic-systems/septic-designer-or-installer) and search the contractor's name or license number. Our guide to checking a septic license walks through it.