Licensed Septic Companies in Sandown, NH
12 septic companies serve Sandown, New Hampshire, and 12 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 Sandown
Guides: Septic system installation · Installation cost · Pumping cost
12 septic companies in Sandown
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Benjamin S Murphy
25 Hale True Road, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05913 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Britton's Excavating
31 Mallard Ln Po Box 214, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #03533 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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John F Ferreira
25 Hale True Rd, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05159 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Maxwell G Corey
34 Reed Rd, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05351 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Michael F Carey
629 Main Street, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05782 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Nyklaus W Lytle
25 Higgins Ave, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05764 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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William Collins
346 Main St, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05456 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
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Jeremy R Senter
108 Main St, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05828 (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 Prokop
15 Glastombury Drive, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #05416 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Susan W Silva
26 Higgins Ave, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Designer and Installer · #04554 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation · Perc testing
No phone on the state list
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Thomas Thibeault
9 Bobcat Way Unit 3, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #03644 (New Hampshire Department of Environmental Services, Subsurface Systems Bureau, verify)
Per state license: Installation
No phone on the state list
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Zac Ackerman
86 Little Mill Rd, Sandown, NH 03873 · Rockingham County
- Licensed: New Hampshire NHDES Permitted Septic System Installer · #04911 (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 Sandown 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 Sandown: common questions
How many licensed septic companies are in Sandown, NH?
12 septic companies serve Sandown, New Hampshire, and 12 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 Sandown?
12 listings in Sandown 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.