WellTestColorado

Selling a home with a well in Colorado?

No single law requires a well test at sale. County programs, the buyer's lender, and state transfer paperwork each have their own rules — see what applies, then get the test scheduled early.

See my county's rules

  • 11 Colorado counties covered
  • Every requirement linked to its official source
  • Verified July 2026

How it works

  1. Look up your county

    A few counties require testing at transfer; most leave it to the buyer's lender. Start with where the property sits.

  2. See every rule that applies

    County program, lender checklist, and the state's change-of-owner filing — in plain English, with the official source next to each.

  3. Request a test or inspection

    Send your details to the site operator for review; no well-professional match or response is guaranteed.

Why well sales get stuck

Nobody agrees on whether a test is 'required' — the county says one thing, the lender's checklist says another, and the internet says both.

  • Lab results take days and closings don't wait. A coliform surprise in the final week can stall everything.
  • The state's well transfer filing is free and takes minutes — but when the title company skips it, the permit quietly stays in the old owner's name.

Start with the rules

Who actually requires a well test when you sell in Colorado No statewide law forces a well test at sale. Separate county and lender rules from the DWR owner-name filing required for covered residential wells. FHA and VA well water test requirements, without the folklore What FHA and VA loans actually require for private wells — when a water test is triggered, what it covers, HUD distances, and how long results stay valid. The well permit filing many Colorado home sales need Covered Colorado residential well sales require a free DWR owner-name filing. Check the permit, understand who files, and avoid an outdated record. Colorado well permit cost: the fee, and the real number behind it What a Colorado well permit actually costs — the DWR filing fee, what's free, and the drilling, pump, and testing costs that dwarf the permit itself. Colorado well permits: how the DWR process actually works The Colorado well permit process, plain: exempt vs non-exempt, the six steps through DWR, what expires, what's free to extend, and what matters at a sale.

Find your county

Rules differ by county. Find yours for the exact requirement, fees, and inspectors:

Archuleta County Boulder County Douglas County Eagle County El Paso County Lender-driven — county lab available Grand County Lender-driven — county lab, 48-hour results Jefferson County Testing required with OWTS permits — Indian Hills area La Plata County Lender-driven — county water lab in Durango Larimer County Pueblo County Water test rider on the septic Transfer of Title Summit County Lender-driven — county testing Mon–Wed

Request help finding a well tester

Your request goes privately to this site's operator for review; no well-professional match or response is guaranteed.

Prefer to talk? Call (970) 680-7991.