The bill aims to revise sanitation laws related to subdivisions in Montana 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 provisions in Sections 50-2-116 and 76-4-102 of the Montana Code Annotated (MCA) to reflect these changes.

Key amendments include the insertion of language that prohibits the construction of subsurface wastewater treatment systems on parcels created after March 30, 2011, if the associated mixing zone would encroach onto adjacent property. The bill also revises the definition of "proposed drainfield mixing zone" to specify that it applies only to parcels created after the specified date and clarifies that it does not include mixing zones approved before March 30, 2011. These changes are intended to enhance public health protections and ensure that local health regulations are consistent with state standards.

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