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Committee reviews DEQ work on endocrine-disrupting chemicals and water quality

Water Policy Interim Committee, 69th Montana Legislature · July 1, 2026
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Summary

Under HJR 44 the committee received DEQ's review of endocrine-disrupting chemical monitoring and regulatory work; public commenters from conservation and industry groups urged different monitoring priorities.

Toni Henneman introduced the committee's work under House Joint Resolution 44 to examine endocrine-disrupting chemicals (EDCs) and water quality. Lindsey Krywaruchka, Water Quality Division Administrator at DEQ, reviewed DEQ's current monitoring programs, detection efforts, and regulatory scope related to EDCs.

Stakeholders presented differing views during the public-comment period. Matt Elsaesser of Upper Missouri Waterkeeper urged expanded monitoring and precautionary approaches where contaminants threaten aquatic species. Ronda Wiggers of the Montana Well Drillers Association emphasized practical concerns for private well owners and the need for guidance that addresses well-construction and testing feasibility. Ann Hallowell reiterated local concerns raised earlier in the meeting.

Committee members asked DEQ for clarification about sampling plans, detection limits, and coordination with other agencies. Staff indicated follow-up materials would be compiled to support potential recommendations or next steps.