GroundRosterLicensed Well and Septic Contractors in Connecticut
Connecticut lists 2,117 licensed well and septic contractors: 174 well drillers and pump installers and 1,949 septic contractors, including 6 who hold both. They are based in 9 planning regions and 242 cities. 19 license classes appear, covering roles such as installation / repair, drilling / construction and geothermal loops.
Checked against Connecticut DPH - eLicense credential extract (well & septic license types) and NJDEP DataMiner - Well Drilling Companies. Roster copy last refreshed 2026-10-17.
Browse by planning region or request free quotes.
Browse Connecticut by planning region
Each listing sits under the planning region of the address on its license record, which can be a mailing address. 9 planning regions have listings based there.
Cities with the most listings based there
Septic Installers by city in Connecticut
Septic System Installation cost guide
Well Drillers by city in Connecticut
Looking for a specific contractor? Search by name, business name, or license number.
Hiring a well and septic professional in Connecticut
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.
How do I check a well and septic professional's license in Connecticut?
Use the license search to find the listing by name, business name, or license number, then confirm it with the agency that issued the license. Every listing links to the roster it came from.
What does well or septic work cost in Connecticut?
Our cost guides give national ranges for well drilling, well pump repair, septic tank pumping, septic cleaning, repairs, and inspections. Site conditions, access, and local demand set the real number, so get at least three written quotes from licensed well and septic pros in Connecticut.
Is a permit required?
Usually, for a new system or well and for most repairs, and the rules are set by the state or the county. Our Connecticut permit guide covers who issues them and what they cover.
Permits and Connecticut agency resources
Do I need a permit for well or septic work in Connecticut? ›
Where this Connecticut data comes from
- Connecticut DPH - eLicense credential extract (well & septic license types) · source page
- NJDEP DataMiner - Well Drilling Companies · source page