Licensed Septic Companies in Henniker, NH
9 septic companies serve Henniker, New Hampshire, and 9 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 Henniker
Guides: Septic system installation · Installation cost · Pumping cost
9 septic companies in Henniker
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Higginson Land Services LLC
76 Patterson Hill Road, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Designer and Installer · #04283 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation · Perc testing
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John Hopkins
39 French Pond Rd, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05308 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Laith Frink
133 Buxton Industrial Dr, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04569 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Leo G Aucoin
619 Gulf Rd, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #02300 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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McComish Excavating
564 Old Hillsboro Road, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04826 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
From their website: Installation
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Thomas Patenaude
Po Box 2040, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05129 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Jonathan Kimball
1364 Old Hillsboro Rd, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #02260 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Ryan Hall
229 Gould Pond Rd, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05194 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Timothy M Mccomish
Po Box 644, Henniker, NH 03242 · Merrimack County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #02263 (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 Henniker 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 Henniker: common questions
How many licensed septic companies are in Henniker, NH?
9 septic companies serve Henniker, New Hampshire, and 9 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 Henniker?
9 listings in Henniker 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.