Well Water Resources for Colorado

Testing labs, treatment companies, costs, well permits, and government resources for private well owners.

Water Testing

For detailed testing information — labs, costs, and what to test for — see our complete testing guide.

Treatment Companies

These companies serve Colorado well owners. We are not affiliated with any of them — this list is a starting point for your research.

GeoWater Services Founded 2001. The largest full-service private water well consulting and equipment service company serving Colorado mountain communities. Specializes in Evergreen, Conifer, Bailey, and Front Range foothills. Water quality testing, well equipment, radon treatment.
Living Water Pump Service Serves Colorado's Front Range and South Park — Conifer, Evergreen, Bailey, Pine, and surrounding areas. Well pumps, water treatment, and repair.
Culligan of Colorado Multiple locations across the Front Range. Full-service water treatment including reverse osmosis, softeners, and whole-house systems.
Radon Mitigation of the Rockies Specializes in radon mitigation for Colorado Springs, Woodland Park, and Teller County. Radon testing, sub-slab depressurization, and water treatment.
Peak Radon Radon testing and mitigation services. Serves the Pikes Peak region and Front Range.

Treatment Costs

What you'll actually pay for common treatment systems:

System	Typical Cost	Notes
Point-of-use RO (kitchen sink)	$250-$600 + installation	Treats one tap. Effective for arsenic, uranium, radium, and most contaminants. Most cost-effective first step.
Whole-house RO	$4,500-$20,000+	Treats all water. High maintenance. Needed for extreme TDS or whole-house contamination.
Water softener	$1,000-$2,500	Ion exchange for hardness. Does NOT remove arsenic, radon, nitrates, or uranium.
Aeration system (radon)	$3,000-$5,000+	Point-of-entry radon removal. 95-99% effective. The standard for mountain wells with high radon.
GAC filter (radon)	$1,500-$3,500	Granular activated carbon. Good for moderate radon levels. Carbon becomes radioactive — requires special disposal.
UV disinfection	$350-$1,500 + install	Whole-house bacteria treatment. Annual bulb replacement ~$50-$100.
Cistern system	$3,000-$8,000+	Storage tank for low-yield wells. Common in mountain communities. Size depends on household demand and well yield.

Always test before you buy. Know what's in your water, at what concentrations, and match treatment to the problem. A system that treats hardness won't help with arsenic. A carbon filter won't remove radon at high levels. Test first, then treat.

Well Permits and Water Rights

Colorado Division of Water Resources — Well Permitting Issues well permits, administers water rights. Contact for questions about drilling, deepening, or replacing wells. Handles exempt well permits and Denver Basin allocations.
Denver Basin Well Permits Specific information for Denver Basin aquifer wells — allocation based on overlying land ownership, 100-year aquifer life calculations, tributary vs. non-tributary classifications.

Government Resources

CDPHE — Drinking Water: Private Wells State guidance for private well owners. Testing recommendations, contaminant information, and links to certified labs.
Colorado Environmental Public Health Tracking — Private Well Water Data on arsenic, nitrate, uranium, and coliform bacteria levels in Colorado private wells. County-level tracking data.
CSU Extension — Private Wells for Home Use (Fact Sheet 6.700) Comprehensive guide from Colorado State University covering well types, water rights, testing, and maintenance.
Colorado Geological Survey — Groundwater Geological context for Colorado groundwater. Aquifer maps, groundwater atlas, and hazard information.
EPA — Private Well Resources Federal guidance for private well owners. Testing recommendations and contaminant fact sheets.

County-Specific Resources

Jefferson County — Well Water Systems JeffCo has mandatory well water quality testing requirements for property transfers. Contact for requirements.
Boulder County — Private Wells and Water Quality County resources for private well owners in Boulder County.
Douglas County — Denver Basin Aquifer Info Aquifer information specific to Douglas County, including water level data and conservation programs.
Park County — Well and Drinking Water Safety Environmental Health contacts and well information for Park County residents.
Black Forest Water & Wells Community organization focused on water issues in the Black Forest area of El Paso County. Groundwater monitoring data and education.