The bill aims to revise sanitation laws related to subdivisions by prohibiting local boards of health from adopting regulations that would permit a mixing zone to encroach on adjacent properties. It clarifies that the Sanitation in Subdivisions Act does not apply to certain drainfield mixing zones. Additionally, the bill amends existing definitions and regulations to ensure that for parcels created after March 30, 2011, subsurface wastewater treatment systems cannot be constructed if their associated mixing zones would encroach onto adjacent property, except in specific circumstances outlined in existing law.

Furthermore, the bill revises the definition of "proposed drainfield mixing zone" to include only those submitted for approval after March 30, 2011, and clarifies that it does not include mixing zones approved before this date or under certain conditions until October 1, 2025. The amendments to Sections 50-2-116 and 76-4-102 of the Montana Code Annotated (MCA) reflect these changes, ensuring that local health boards maintain stringent standards for public health while also protecting property rights.

Statutes affected:
LC Text: 50-2-116, 76-4-102
HB0180_1(1): 50-2-116, 76-4-102
HB0180_1(10): 50-2-116, 76-4-102
HB0180_1(2): 50-2-116, 76-4-102
HB0180_1(3): 50-2-116, 76-4-102
HB0180_1(4): 50-2-116, 76-4-102
HB0180_1(5): 50-2-116, 76-4-102
HB0180_1(6): 50-2-116, 76-4-102
HB0180_1(7): 50-2-116, 76-4-102
HB0180_1(8): 50-2-116, 76-4-102
HB0180_1(9): 50-2-116, 76-4-102
HB0180_1: 50-2-116, 76-4-102
HB0180_2(1): 50-2-116, 76-4-102
HB0180_2(10): 50-2-116, 76-4-102
HB0180_2(11): 50-2-116, 76-4-102
HB0180_2(2): 50-2-116, 76-4-102
HB0180_2(3): 50-2-116, 76-4-102
HB0180_2(4): 50-2-116, 76-4-102
HB0180_2(5): 50-2-116, 76-4-102
HB0180_2(6): 50-2-116, 76-4-102
HB0180_2(7): 50-2-116, 76-4-102
HB0180_2(8): 50-2-116, 76-4-102
HB0180_2(9): 50-2-116, 76-4-102
HB0180_2: 50-2-116, 76-4-102
HB0180_X(1): 50-2-116, 76-4-102
HB0180_X(2): 50-2-116, 76-4-102
HB0180_X: 50-2-116, 76-4-102