Licensed Septic Companies in Dover, NH
11 septic companies serve Dover, New Hampshire, and 11 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 Dover
Guides: Septic system installation · Installation cost · Pumping cost
11 septic companies in Dover
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Benjamin T Gillis
55 Central Ave Unit 2, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05638 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Brendon A Moores
12 Patriot Dr, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05825 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Christopher W Melink
3 Gilman St, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05765 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Duncan A Graham
1 Old English Village Rd Apt 210, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05776 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Mourgenos Lawn Care
32 Three Rivers Farm Road, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05908 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Ronald L Hutchins
24 Wentworth Terrace, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05836 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Thomas Boisvert
Po Box 1603, Dover, NH 03821 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05425 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Brian Morin
35 Wildcat Dr, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04347 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Dean Truax
628 6 Th St, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #02865 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Eugene A Mccarthy
134 Broadway, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #03806 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Michael R Peloso
39 Spur Rd, Dover, NH 03820 · Strafford County
- Licensed: New Hampshire NHDES Permitted Septic System Designer and Installer · #04305 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation · Perc testing
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 Dover 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 Dover: common questions
How many licensed septic companies are in Dover, NH?
11 septic companies serve Dover, New Hampshire, and 11 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 Dover?
11 listings in Dover 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.