Licensed OWTS designers in Rhode Island
Rhode Island’s roster of licensed OWTS designers covers 235 businesses across 0 counties. Pick a county to see who is based there.
Counties with the most licensed owts designers
Every county with licensed owts designers
Where the roster is filed, and where the work happens
These records are organised by the address on the licence, and that address is not a service area. A Rhode Island licence is granted by RIDEM and is valid across the state — the county tells you where the business is, not the limit of where they will go.
In practice a rural county showing two licensed owts designers is rarely the real choice set. Every county page here lists its neighbours for exactly that reason.
Records as published August 26, 2026.