GroundRosterLicensed Water Well Contractors: Nassau County, NY
8 licensed water well contractors based in Nassau 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 New York State DEC - Water Well Contractor Registry and NJDEP DataMiner - Well Drilling Companies. Roster copy last refreshed 2026-08-17.
Towns in Nassau County
All 6 towns named on the license records based here, with the number of listings in each, most first.
License classes on the Nassau 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 8.
| License class | Trade | Listings |
|---|---|---|
| Well Drilling Company | Well | 2 |
| Agricultural Well Driller, Commercial Well Driller, Control of Overflowing Wells, Dewatering Well Driller, Geothermal Well Driller, Irrigation Well Driller, Pump Installation, Pump Service, Residential Well Driller, Well Cleaning & Redevelopment, Well Deepening, Well Disinfection | Well | 1 |
| Commercial Well Driller, Irrigation Well Driller, Pump Installation, Pump Service, Residential Well Driller, Well Cleaning & Redevelopment | Well | 1 |
| Dewatering Well Driller, Geotechnical Well Driller, Geothermal Well Driller, Injection Well Driller, Monitoring Well Driller, Well Cleaning & Redevelopment, Well Disinfection | Well | 1 |
| Geotechnical Well Driller | Well | 1 |
| Irrigation Well Driller, Pump Installation, Pump Service, Residential Well Driller | Well | 1 |
| Monitoring Well Driller | Well | 1 |
Water Well Contractors based in Nassau County (8)
Gary Caparelli, Inc.Licensed
Aquifer Drilling & Testing, Inc.Licensed
Tri-State Drilling Technologies, Inc.Licensed
Aquifer Drilling & TestingLicensed
American Well & PumpLicensed
Five Towns Sprinkler Service, Inc.Licensed
SHL Engineering, PCLicensed
American Well & Pump CompanyLicensed
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 Nassau County, with national cost ranges
Listings based in Nassau County whose license class covers each service. Cost ranges are national; each links its cost guide.
| Service | Based in Nassau County | National cost |
|---|---|---|
| Well Drilling | 8 | $5,500 to $35,000 |
| Well Pump Repair | 3 | $1,000 to $2,500 |
Hiring a water well contractor in Nassau County
Water well contractors drill and case new wells, install and service pumps and pressure tanks, and plug wells taken out of service. Well drilling cost is driven mostly by depth and geology. Most states license drilling and pump installation separately; confirm the license covers the work you need.
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 New York?