Wyoming Bioassays and Biomonitoring: What you need to know

Governing Law and Regulations

Safe Drinking Water Act, 42 USC 300f to 300j-26

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Wyoming Pollutant Discharge Elimination Program (WYPDES) permitting: Wyoming Water Quality Rules and Regulations (WWQR&R) Chapter 2.1 to 2.19 and Appendices A to N

Bacteriological analysis of water: Wyoming Statute (WS) 35-4-221

Testing procedures: WWQR&R Chapter 2, Section 1

Whole effluent toxicity (WET) testing: WWQR&R Chapter 2, Appendix E

Regulatory Agencies

Wyoming Department of Environmental Quality (DEQ)

Wyoming Department of Health (DOH) Division of Laboratories

U.S. Environmental Protection Agency (EPA) Region 8 Drinking Water Laboratory Certification Program

See national section for basic information and federal regulations.

Comparison: State vs. Federal

· Rules. Because Wyoming does not have primacy from EPA to administer its drinking water program, laboratories that perform water analysis for Wyoming public drinking water systems or for tribal drinking water systems must be certified by EPA in Region 8. Laboratories that are located outside of Region 8 may be used as long as another state or EPA region certifies them and the laboratory has applied for and been granted reciprocal certification with Region 8.

Wyoming has been granted authority to administer the National Pollutant Discharge Elimination Program (NPDES) in the state, where it is known as WYPDES. Wyoming follows the federal monitoring requirements for the NPDES program. See the national section BIOASSAYS/BIOMONITORING.

· Administration and enforcement. EPA Region 8 administers the laboratory certification program in Wyoming. DEQ administers the WYPDES permitting program.

State Requirements


WS 35-4-221

All public or private utilities engaged in the ...

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State Requirements

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Wyoming Bioassays and Biomonitoring Resources

Bioassays and Biomonitoring Products

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