GroundRosterWilley & Co, IncLicensed
| Name | Willey & Co, Inc |
| License number | 2395A, 2395E3, 4148I, 5512E3, 6219F, 2395B, 4148B, 4148E3, 4148F, 4148H, 5512F, 5512H, 5953E1 |
| License type | Class A (Percolation Tester) · Class B (Standard-Designer) · Class E (System Contractor) · Class F (Liquid Waste) · Class H (Systems Inspector) · Class I (Construction Inspector) |
| License status | Approved |
| Location | Seaford, Delaware 19973 |
| Phone | (302) 629-3327 |
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What this license covers
- Design: licensed to size and lay out a septic system for a specific site and soil condition.
- Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
- Pumping / cleaning: licensed to pump out and clean septic tanks, service them, and haul the waste.
- Construction inspection: licensed to inspect a septic system as it is built, before it is covered over.
How to verify this license
We publish this listing exactly as it appears in Delaware's official licensing records; we do not vouch for the business itself. Before hiring, look up license #2395A, 2395E3, 4148I, 5512E3, 6219F, 2395B, 4148B, 4148E3, 4148F, 4148H, 5512F, 5512H, 5953E1 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees, last checked 2026-08-16. Verify at the official source.
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