GroundRosterLicensed Well and Septic Contractors: New Castle County, DE
48 licensed well and septic pros based in New Castle 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 Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees, Delaware DNREC - licensed water well and pump installer contractors, NJDEP DataMiner - Well Drilling Companies and Delaware DNREC - licensed water well and pump installer contractors + Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees. Roster copy last refreshed 2026-08-17.
Towns in New Castle County
All 12 towns named on the license records based here, with the number of listings in each, most first.
License classes on the New Castle 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 48.
| License class | Trade | Listings |
|---|---|---|
| Class E (System Contractor) | Septic | 16 |
| Class B (Standard-Designer) | Septic | 9 |
| Class C (Engineered-Designer) | Septic | 8 |
| Class F (Liquid Waste) | Septic | 6 |
| Class H (Systems Inspector) | Septic | 6 |
| Water Well Contractor | Well | 5 |
| Well Drilling Company | Well | 4 |
| Pump Installer Contractor | Well | 3 |
| Class D (Site Evaluator) | Septic | 2 |
| Class I (Construction Inspector) | Septic | 2 |
| Class A (Percolation Tester) | Septic | 1 |
| Class C (Engineered-Designer) | Well and Septic | 1 |
| Water Well Contractor | Well and Septic | 1 |
Septic Contractors based in New Castle County (35)
Morgan Creek GC LLCLicensed
W F Construction IncorporatedLicensed
Clifton L. Bakhsh, Jr., Inc.Licensed
Vandemark & Lynch IncLicensed
Hernandez Sanitation ServicesLicensed
R Webb Excavating LLCLicensed
Mid-State Septic Inspections LLCLicensed
MRA EngineeringLicensed
Richard F Matoni General ContractorLicensed
Howard L RobertsonLicensed
Landmark Engineering, IncLicensed
Duffield Assicoates, IncLicensed
Artesian ResourcesLicensed
Sterling Cabinetry & CarpentryLicensed
Robert C PeoplesLicensed
Pennoni Associates, IncLicensed
Karl KunkleLicensed
First State Roll OffLicensed
Blevins ExcavatingLicensed
A-1 Sanitation Service IncLicensed
Robert Wiesner PlumbingLicensed
Webbys Septic Services LLCLicensed
KCI TechnologiesLicensed
Mark North Builders, LLCLicensed
Apex EngineeringLicensed
United RentalsLicensed
Duffield AssociatesLicensed
PBF EnergyLicensed
Green Paving & ExcavatingLicensed
David P RoserLicensed
W W Snyder Masonary ExcavatingLicensed
Jeff Bartsch Trucking And Excavating IncorporatedLicensed
Septic Solutions, LLCLicensed
Anderson Civil EngineeringLicensed
D S WilsonLicensed
Water Well Contractors based in New Castle County (12)
CGC GeoserviceLicensed
Eastern States Construction Service IncLicensed
Robert F WiesnerLicensed
Tws Environmental, LLCLicensed
Geo-technology Assoc. INC.Licensed
TWS Environmental LLCLicensed
Cgc Geoservices, LLCLicensed
Connelly & AssociatesLicensed
Corrado Construction Company LLCLicensed
Randy Stevens PlumbingLicensed
R W Greer IncLicensed
Geo-Technology Associates IncLicensed
Well and Septic Contractors based in New Castle County (1)
Artesian Water 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 New Castle County, with national cost ranges
Listings based in New Castle County whose license class covers each service. Cost ranges are national; each links its cost guide.
| Service | Based in New Castle County | National cost |
|---|---|---|
| Septic Tank Pumping | 6 | $250 to $600 |
| Septic System Installation | 16 | $3,600 to $12,500 |
| Septic Inspection | 6 | $150 to $900 |
| Septic System Design | 15 | Varies by site |
| Perc Test and Soil Evaluation | 3 | $250 to $1,000 |
| Well Drilling | 10 | $5,500 to $35,000 |
| Well Pump Repair | 3 | $1,000 to $2,500 |
Hiring a well and septic professional in New Castle 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 Delaware?