GroundRosterWhite Marsh Environmental Systems IncLicensed
| Name | White Marsh Environmental Systems Inc |
| License number | 4573E3 |
| License type | Class E (System Contractor) |
| License status | Approved |
| Based in | Dover, Delaware 19901 |
| Phone | (302) 734-7500 |
"Based in" is the city on the business's state 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
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
How to verify this license
We publish the license details exactly as they appear in Delaware's official licensing records; we do not vouch for the business itself. Before hiring, look up license #4573E3 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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