Larimer County's point-of-sale program is about septic, not wells: the Transfer of Title inspection covers the wastewater system only, and the county's materials don't require any well water sample as part of it. Well testing for a Larimer sale is driven by the buyer's lender — FHA, VA, and USDA loans commonly need potability evidence — plus the free statewide DWR ownership filing.

County requirement	No well-water test appears in the county's Transfer of Title program — the required inspection and Acceptance Document cover the septic system only.
What usually drives testing	The buyer's lender. Government-backed loans commonly require water quality evidence for homes on private wells — the exact panel is the lender's call.
Statewide filing	Every Colorado well sale needs the free DWR change-of-owner filing so the well permit follows the property. source ↗

Details to confirm with the county

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

• Whether any Larimer land-use process (e.g. building permits on new wells) requires testing outside the sale context — out of scope for a transfer, but worth knowing for sellers mid-remodel.

Verified July 2026 · Source: Larimer County — Septic Transfer of Title program (no well-test component)