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Contact Information:
New Accounts:  Jim Walford                    307.777.7431
Billing Services:  Shannon Myers             307.777.7812
Testing Services:  Cathy Heyl                   307.777.7536
                             Jim Mildenberger          307.777.7546


The Wyoming Public Health Laboratory (WPHL) offers EPA certified water testing services for Total Coliforms and E. coli. This service has been available to federal, state, and local agenices for many years. In 2010, we moved into a new facility and are now able to increase the number of samples tested in this laboratory section.  WPHL is accepting samples from both private individuals and private businesses. We can service the water testing and reporting needs of the rural homeowners that would like to test their domestic wells at the end of the irrigation season, as well as private businesses that have EPA water testing requirements.


Procedure for Collecting Water Samples

Water Testing Requisition Form  


Private Water Well Disinfection Resources:

Wyoming Department of Agriculture - Analytical Services Laboratory

Minnesota Department of Health 

New Hampshire Department of Environmental Services 


Additional Water Testing Laboratories

Wyoming Deparment of Agriculture - Analytical Services Laboratory

Energy Laboratories (Casper and Gillette)

Inter-Mountain Labs (Gillette and Sheridan)

Precision Labs (Riverton)

Wyoming Analytics Laboratories (Laramie and Rock Springs)

C H Diagnostic & Consulting Service, Inc. (Giardia & Cryptosporidium)