Citadel EngineeringLicensed

License details

"Based in" is the city and county of the address on the business's license record.

What this license covers

• Design: licensed to size and lay out a septic system for a specific site and soil condition.
• Engineered design: licensed to design engineered systems, used where soil or site constraints rule out a standard system.
• Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
• 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 public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #2285A, 2285C, 2285I, 2285B, 2285H 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. Look it up at the issuing agency.