GroundRosterLicensed Well and Septic Contractors in Delaware
Delaware lists 220 licensed well and septic contractors: 53 well drillers and pump installers and 174 septic contractors, including 7 who hold both. They are based in 3 counties and 40 cities. 46 license classes appear, covering roles such as pumping / cleaning, drilling / construction and installation / repair.
Checked against Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees, Delaware DNREC - licensed water well and pump installer contractors, Delaware DNREC - licensed water well and pump installer contractors + Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees and NJDEP DataMiner - Well Drilling Companies. Roster copy last refreshed 2026-08-17.
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Browse Delaware by county
Each listing sits under the county of the address on its license record, which can be a mailing address. 3 counties have listings based there.
Cities with the most listings based there
Septic Pumpers by city in Delaware
Septic Tank Pumping cost guide
Septic Installers by city in Delaware
Septic System Installation cost guide
Septic Inspectors by city in Delaware
Septic Designers by city in Delaware
Septic System Design cost guide
Site Evaluators by city in Delaware
Perc Test and Soil Evaluation cost guide
Well Drillers by city in Delaware
Looking for a specific contractor? Search by name, business name, or license number.
Hiring a well and septic professional in Delaware
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 Delaware?
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 Delaware?
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 Delaware.
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 Delaware permit guide covers who issues them and what they cover.
Permits and official Delaware resources
Do I need a permit for well or septic work in Delaware? ›
Where this Delaware data comes from
- Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees · official source
- Delaware DNREC - licensed water well and pump installer contractors · official source
- Delaware DNREC - licensed water well and pump installer contractors + Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees · official source
- NJDEP DataMiner - Well Drilling Companies · official source