GroundRosterLicensed Well and Septic Contractors: Knox County, ME
24 licensed well and septic pros based in Knox County. Every license number below is sourced from public licensing records, with a link to look it up yourself.
Grouped by the county of the address on each license record, which can be a mailing address, so it doesn't tell you where the business works. When the record names no county, we place it by ZIP code, then town.
Checked against Maine DHHS - Certified Inspectors, Maine DHHS - Certified System Installers, Maine DHHS - Licensed Site Evaluators, Maine DHHS - Licensed Well Drilling Companies and Maine DHHS - Well Driller & Pump Installer License Holders. Roster copy last refreshed 2026-08-17.
Towns in Knox County
All 9 towns named on the license records based here, with the number of listings in each, most first.
License classes on the Knox County records
Each class as the issuing agency prints it on the license record. A record that names more than one class counts once under each, so the rows can add up to more than 24.
| License class | Trade | Listings |
|---|---|---|
| Certified System Installer | Septic | 8 |
| Site Evaluator | Septic | 7 |
| Certified Inspector | Septic | 6 |
| Open Loop Geothermal, Pump Installer - Master, Well Driller - Master | Well | 1 |
| Pump Installer - Journeyman | Well | 1 |
| Well Drilling Company | Well | 1 |
Septic Contractors based in Knox County (21)
Wilson Construction and LandscapingLicensed
Rhino Services LLC Landscape and EarthworkLicensed
Adolphsen EarthworksLicensed
Sightsound LLCLicensed
Christopher S PackardLicensed
Colin KellyLicensed
Meklin ExcavatingLicensed
Midknight Excavation & Septic LLCLicensed
Edward GreenLicensed
Interstate Septic SystemsLicensed
J S Dupere & CoLicensed
David StuderLicensed
Doug Van HoewykLicensed
Interstate Septic Services, Inc.Licensed
Marc SwartzLicensed
Joseph LabrancheLicensed
Jake Barbour, IncLicensed
George C Hall & Sons IncLicensed
HH Home InspectionsLicensed
JG LaBrancheLicensed
Packard's Small ExcavationLicensed
Water Well Contractors based in Knox County (3)
Haskells Well Drilling - RocklandLicensed
Warren HaskellLicensed
Stephen WillisLicensed
Own one of these businesses? Find your listing and claim it.
Looking for a specific contractor? Search by name, business name, or license number.
Services in Knox County, with national cost ranges
Listings based in Knox County whose license class covers each service. Cost ranges are national; each links its cost guide.
| Service | Based in Knox County | National cost |
|---|---|---|
| Septic Tank Pumping | 0 | $250 to $600 |
| Septic System Installation | 8 | $3,600 to $12,500 |
| Septic Inspection | 6 | $150 to $900 |
| Septic System Design | 0 | Varies by site |
| Perc Test and Soil Evaluation | 7 | $250 to $1,000 |
| Well Drilling | 2 | $5,500 to $35,000 |
| Well Pump Repair | 2 | $1,000 to $2,500 |
None of the listings based in Knox County hold a license class we can match to septic tank pumping or septic system design. Ask any contractor whether they do this work, or try a nearby city.
Hiring a well and septic professional in Knox County
Before you sign anything: confirm the license on this page is still active with the agency that issued it, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.
Do I need a permit for well or septic work in Maine?