Drinking water comes from a variety of sources, including public water systems, private wells, and bottled water. Know where your drinking water comes from, how it has been treated, and if it is safe to drink. The United States Environmental Protection Agency (EPA) sets standards for drinking water quality in public water systems. These standards do not apply to privately owned wells or other individual water systems. Owners of private wells are responsible for ensuring that their well water is safe to drink.
Reports on the quality of state waters and other resources
Testing information
Submitting a water sample to the State Lab (step-by-step instructions)
- Water testing for non-water providers
- Information for non-water providers such as well owners, business owners, and realtors who want to test their drinking water. Non-water providers do not follow a water testing compliance schedule or have a public water system identification number (PWSID).
- Compliance testing for water providers and wastewater companies
- Compliance drinking water testing for wastewater companies, water providers, and other businesses.
Contact information
Environmental microbiology (bacteria in water)
CDPHE_envmicro@state.co.us
Specify the water test in the subject line.
Phone: 303-692-3490
Fax: 303-691-4008
Chemistry laboratory (chemicals in water)
CDPHE_chemistry@state.co.us
Specify the chemistry topic in the email subject line.
Voicemail line: 303-692-3048