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Septic bill pits businesses and homeowners against public-health officials and environmentalists
Summary
House Bill 658 would set statewide septic standards, require written directives from boards of health, and grandfather functioning systems. Proponents said it would bring consistency; numerous county sanitarians, public-health officials and environmental groups warned it would undercut local protections for drinking water and streams, citing Seeley Lake nitrate contamination.
Representative Jedidiah Hinkle (House District 67) opened the hearing on House Bill 658, a sweeping measure proposing statewide septic standards, stronger transparency requirements for local boards of health, and grandfathering of existing systems that are not failing. Supporters — including homeowners, realtors and engineers — described long permitting delays, shifting local requirements and high costs for businesses and residents who said local health departments had required repeated redesigns.
Michael Mulder described a two-year permitting saga in Gallatin County that he said cost nearly $100,000 and involved shifting requirements, including new design rules and an engineer-stamp mandate. Several other proponents, including civil engineers and the Montana Environmental Consultants Association, urged the committee to adopt the bill to remove inconsistent, county-specific constraints they said were adding unnecessary expense and delays.
Opponents included county health officers, sanitarians and conservation groups who said HB658 would remove critical local tools used to respond to site-specific conditions such as soil type, groundwater sensitivity and nitrate contamination. Gina Miller (Montana Environmental Health Association) and Laurie Christianson (Gallatin City-County Health) warned that county rules are often tailored to local risks — for example, Seeley Lake's special management area to combat nitrate contamination — and that stripping local authority would harm water quality and public health. Gallatin County cited more than 21,000 septic systems and mapped nitrate plumes they attribute in part to septic impacts.
Committee questioning probed the Seeley Lake example, how counties currently monitor septic systems, and how state DEQ and local health departments coordinate on changes of use. Missoula and Gallatin officials said local monitoring and the ability to adopt stricter standards are essential for protecting drinking water and surface waters, while proponents said the bill would create equal protection and certainty statewide.
Several sanitarians warned that allowing changes in use without local enforcement of upgrades could cause premature system failures and shift costs to homeowners. Representative Hinkle said he was open to amendment on the change-of-use issue and urged the committee to give the bill a due pass with technical fixes; opponents urged a do-not-pass vote.
The hearing closed without a committee decision; the record contains extensive technical testimony and multiple offers to work on amendments.
