Drinking Water

Person putting water from faucet to testing tube

Through the Drinking Water program, Environmental Health specialists assist Laramie County homeowners in testing their well water to make sure it’s free of disease-causing organisms and chemicals.

Services provided by this program include:

  • Arranging lab testing of well water samples for bacteria contamination
  • Providing information on testing for chemical contamination and interpretation of results, when possible.
  • Monitoring EPA Sanitary Surveys on public water supply systems

We recommend having your domestic well tested twice yearly (once in late spring, once in late fall) to verify safe drinking water.

To speak to an Environmental Health specialist about the Drinking Water program, please call 307.633.4090

Well Water Testing Information

If you’re a homeowner who would like us the check the bacterial quality of your well water, here’s what you need to know:

  • There is a $10 fee to test for the presence of Total Coliform and E-Coli bacteria. Water is considered unsafe to drink when E-Coli or Coliform bacteria are present.
  • Water samples to be analyzed for bacteriological content must be collected in a sterilized, specially prepared bottle. Bottles are available at the Cheyenne Laramie County Public Health building (100 Central Ave. in Cheyenne) between 8 a.m. and 5 p.m., Monday through Friday
  • The laboratory analysis is performed by the State of Wyoming Public Health Lab

To learn how to properly collect a well water sample for testing, click here.

For instructions on disinfecting your well in the event that disease-causing organisms are found, click here.