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Septic Registry

Licensed septic companies in Block Island, Rhode Island

1 business on Rhode Island’s septic licensing records gives an address in Block Island. Block Island is in Washington County, which has 69 in total.

More licensed companies elsewhere in Washington County

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

Septic licensing in Block Island

How many licensed septic companies are there in Block Island?
1 business gives Block Island as their address on Rhode Island's septic licensing records. That count is of businesses based in Block Island, not of everyone who will work there — a Rhode Island licence is valid across the state.
Do I have to use a company based in Block Island?
No. Licensing is statewide, so any licensed company can legally work in Block Island. Washington County has 69 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 Block Island 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 RIDEM's OWTS professional licensing office.

Other towns in Washington County

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