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Willey & Co, IncLicensed

Licensed septic contractor based in Seaford, Sussex County, DE

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
Based in	Seaford, Sussex County, Delaware 19973

"Based in" is the city and county of the address on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

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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 the license details exactly as they appear in the official licensing records of the agency that issued the license; 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 agency that issued it, 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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