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Septic Registry

Licensed septic companies in Millsboro, Delaware

7 businesses on Delaware’s septic licensing records give an address in Millsboro. Millsboro is in Sussex County, which has 90 in total.

3 licensed system contractors6 licensed liquid waste haulers1 licensed system designers3 licensed systems inspectors2 licensed site evaluators

More licensed companies elsewhere in Sussex County

A Delaware licence is valid statewide. These are based in the same county but a different town, and can legally work in Millsboro.

Septic licensing in Millsboro

How many licensed septic companies are there in Millsboro?
7 businesses give Millsboro as their address on Delaware's septic licensing records. That count is of businesses based in Millsboro, not of everyone who will work there — a Delaware licence is valid across the state.
Do I have to use a company based in Millsboro?
No. Licensing is statewide, so any licensed company can legally work in Millsboro. Sussex County has 90 in total, and companies in neighbouring counties can travel too. Being local usually matters for call-out speed and price, not permission.
How do I check a Millsboro septic company is really licensed?
Every listing here names the record it came from and the date that record was published. To confirm it is still current, check with DNREC, or the state's own licensee dataset.

Other towns in Sussex County

Records as published August 26, 2026. Report a correction.