Archuleta County's Transfer of Title program runs through its Water Quality Department but covers the septic system only — no well-water test is part of TOT approval. Since San Juan Basin Public Health dissolved, homeowner well testing for Archuleta happens at the La Plata County water lab in Durango (coliform and E. coli bacteriology), or through CDPHE's state lab.

County requirement	No well-water test appears in the county's Transfer of Title program — the required third-party NAWT inspection and Acceptance Document cover the septic system. source ↗
Where to test	Following the dissolution of San Juan Basin Public Health, homeowner water bacteriology testing (total coliform and E. coli) is done at the La Plata County Water Quality Lab in Durango; CDPHE's state lab is the alternative.
Statewide filing	Every Colorado well sale needs the free DWR change-of-owner filing so the well permit follows the property. source ↗
County contact	Archuleta County Water Quality Department, 970-264-8342, waterquality@archuletacounty.org.

Details to confirm with the county

We couldn't confirm the following from Archuleta County's official pages. Check these with the county before you rely on them:

• Sample kit pick-up options within Archuleta County itself (vs driving to Durango) — the county page routes to La Plata's lab logistics.

Verified July 2026 · Source: Archuleta County Water Quality Department — Homeowner Water Testing