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William B RoseLicensed

Licensed septic contractor based in Block Island, Washington County, RI

License details

License numberL1406
License typeOWTS Installer
License statusActive, RIDEM licensed
Based inBlock Island, Washington County, Rhode Island 02807

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

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 the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #L1406 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Rhode Island Dept. of Environmental Management (RIDEM), last checked 2026-10-03. Look it up at the issuing agency.

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