About Colorado Well Water
This site exists because finding clear, reliable information about well water quality in Colorado is harder than it should be.
Over 200,000 wells are permitted in Colorado, and approximately 7% of the state's population — plus many more in rural communities — relies on private wells for drinking water. Unlike public water systems, private wells aren't monitored or regulated by any government agency. That means well owners are responsible for testing their own water and understanding the results — but the information to do that is scattered across government PDFs, academic papers, and water treatment company sales pages.
We built Colorado Well Water to put the most important information in one place: what contaminants are common in your area, where to get tested, what your results mean, and what your options are if something comes back high.
What This Site Is
- A starting point for understanding your well water
- Community-specific guides based on local geology, real water quality data, and government sources
- Links to certified testing labs, state programs, and local treatment companies
- Plain-language explanations of Colorado's complex geology, aquifer systems, and well regulations
- A public information resource — not a sales funnel
What This Site Is Not
- A substitute for actual water testing (every well is different)
- Professional advice about your specific well or water system
- Affiliated with any government agency, water treatment company, or testing lab
Our Sources
The data on this site comes from government and academic sources, including:
- United States Geological Survey (USGS) — groundwater studies, water level monitoring, aquifer characterization
- Colorado Department of Public Health and Environment (CDPHE) — drinking water quality data, private well testing programs
- Colorado Geological Survey — groundwater atlas, radon hazards, geological mapping
- Colorado Division of Water Resources — well permits, water rights, Denver Basin allocations
- Colorado State University Extension — private well education and water quality research
- Environmental Protection Agency (EPA) — contaminant standards, private well guidance
- Colorado Environmental Public Health Tracking — private well water quality data
- County environmental health departments and water districts
We cite specific sources on each page. If you find an error or have better data, we want to know.
Every well is different. Two wells on the same street can have completely different water quality. The only way to know what's in your water is to test it.
Contact
Have questions, corrections, or suggestions? Reach us at hello@coloradowellwater.com.