75-6-102. Definitions. As used in this part, unless the context clearly indicates otherwise, the following definitions apply:
     (1) "Board" means the board of environmental review provided for in 2-15-3502.
     (2) "Certified wellhead protection area" means an area certified by the department that protects the surface and subsurface area surrounding a source of ground water for a public water supply system through which contaminants may move toward and reach the source of supply.
     (3) "Community water system" means a public water supply system that serves at least 15 service connections used by year-round residents or that regularly serves at least 25 year-round residents.
     (4) "Contamination" means impairment of the quality of state waters by sewage, industrial wastes, or other wastes creating a hazard to human health.
     (5) "Cross-connection" means a connection between a public water supply system and another water supply system, either public or private, or a wastewater or sewer line or other potential source of contamination so that a flow of water into or contamination of the public water supply system from the other source of water or contamination is possible.
     (6) "Department" means the department of environmental quality provided for in 2-15-3501.
     (7) "Drainage" means rainfall, surface, and subsoil water.
     (8) "Industrial waste" means any waste substance from the processes of business or industry or from the development of a natural resource, together with any sewage that may be present.
     (9) "Industrial waste discharge system" means a system that discharges industrial waste into state waters.
     (10) "Maximum contaminant level" means the maximum permissible level of a contaminant in water that is delivered to a user of a public water supply system.
     (11) "Montana wellhead protection program" means a program administered by the department to certify wellhead protection areas and review wellhead protection ordinances.
     (12) "Other waste" means garbage, municipal refuse, decayed wood, sawdust, shavings, bark, lime, sand, ashes, offal, night soil, oil, grease, tar, heat, chemicals, dead animals, sediment, wrecked or discarded equipment, radioactive materials, solid waste, and all other substances that may pollute state waters.
     (13) "Person" means an individual, corporation, association, partnership, municipality, other political subdivision of the state, or federal agency.
     (14) "Pollution" means contamination or other alteration of the physical, chemical, or biological properties of state waters that exceeds that which is permitted by Montana water quality standards, including but not limited to standards relating to change in temperature, taste, color, turbidity, or odor or the discharge or introduction of a liquid, gaseous, solid, radioactive, or other substance into state water that will or is likely to create a nuisance or render the waters harmful, detrimental, or injurious to public health, recreation, safety, or welfare, to livestock, or to wild animals, birds, fish, or other wildlife. A discharge that is authorized under the pollution discharge permit rules of the board is not pollution under this chapter.
     (15) "Public sewage system" means a system of collection, transportation, treatment, or disposal of sewage that serves 15 or more families or 25 or more persons daily for a period of at least 60 days in a calendar year.
     (16) "Public water supply system" means a system for the provision of water for human consumption from a community well, water hauler for cisterns, water bottling plant, water dispenser, or other water supply that has at least 15 service connections or that regularly serves at least 25 persons daily for a period of at least 60 days in a calendar year.
     (17) "Safe Drinking Water Act" means 42 U.S.C. 300f and regulations set forth in 40 CFR, parts 141 and 142.
     (18) "Sewage" means water-carried waste products from residences, public buildings, institutions, or other buildings, including discharge from human beings, together with ground water infiltration and surface water present.
     (19) "State waters" means a body of water, irrigation system, or drainage system, either surface or underground.
     (20) "Transient noncommunity water system" means a public water supply system that is not a community water system and that does not regularly serve at least 25 of the same persons for at least 6 months a year.

     History: En. Sec. 141, Ch. 197, L. 1967; amd. Sec. 1, Ch. 67, L. 1974; amd. Sec. 1, Ch. 556, L. 1977; R.C.M. 1947, 69-4902; amd. Sec. 1, Ch. 556, L. 1979; amd. Sec. 2, Ch. 312, L. 1989; amd. Sec. 1, Ch. 645, L. 1991; amd. Sec. 188, Ch. 418, L. 1995; amd. Sec. 3, Ch. 488, L. 1995; amd. Secs. 525, 568, Ch. 546, L. 1995.