Out-of-state companies licensed in Delaware

51 companies hold Delaware septic credentials but are not filed under any Delaware county — almost all of them because they are based across the state line, where the nearest licensed company often is. A licence is valid statewide regardless of where the business sits. A few are here because the state’s own record names a town or an out-of-state county in the county field, and we would rather show you the record than guess at what it meant.

Records as published August 26, 2026. Back to Delaware →