GroundRosterDuane JohnstonLicensed
License details
| License number | 02581 |
| License type | Septic System Installer |
| License status | Active, NH DES Designer/Installer roster |
| Based in | Thornton, Grafton County, New Hampshire 03285 |
"Based in" is the city and county of the address on the business's license record.
What this license covers
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
How to verify this license
We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #02581 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.
Source: NH DES - Septic System Designers & Installers, last checked 2026-08-16. Look it up at the issuing agency.
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