(1) The following definitions apply to this subchapter:

(a) "Contamination" means impairment or other alteration of the physical, chemical, or biological properties of water, including causing violation of the surface water quality standards contained in ARM Title 17, chapter 38, subchapter 6 or the maximum contaminant levels for public water supplies contained in ARM Title 17, chapter 38, subchapter 2, or otherwise creating a hazard to human health.

(b) "Lateral" means that portion of a water system or sewerage system which extends horizontally from the water or sewer main to the water or sewer riser pipe.

(c) "Potable water" means water which is safe for human consumption in terms of bacteriological and chemical quality.

(d) "Potentially hazardous food" means any perishable food that consists in whole or in part of milk products, eggs, meat, poultry, fish, shellfish, edible crustacea, or other ingredients, including synthetic ingredients, in a form capable of supporting rapid and progressive growth of infectious or toxigenic microorganisms. The term does not include clean, whole, uncracked, odor-free shell eggs or foods which have a pH level of 4.6 or below or a water activity (aW) value of 0.85 or less.

(e) "Public water supply system" means any installation or structure that provides water for human consumption and services 10 or more families or 25 or more persons at least 60 days out of the calendar year.

(f) "Sanitary station" means a facility used for removing and disposing of wastes from trailer holding tanks.

(g) "Self-contained trailer" means a trailer which can operate independently of connections to sewer, water, and electric systems. It contains a water-flushed toilet and lavatory, shower, and kitchen sink, any or all of which are connected to water storage and sewage holding tanks located within the trailer.

(h) "Sewer line connection" means the connection consisting of all pipes, fittings, and appurtenances from the drain outlet of the trailer to the inlet of the corresponding sewer riser pipe of the sewage system serving the work camp.

(i) "Sewer riser pipe" means that portion of the sewer system which extends vertically to the ground elevation and terminates at each trailer space.

(j) "State waters" means any body of water, irrigation system, or drainage system, either surface or underground.

(k) "Stop-and-waste valve" means any unit that permits the outlet valve to be drained through a port or drain hole provided in the valve.

(l) "Trailer space" means that part of a work camp designated for the placement of a single trailer and the exclusive use of its occupants.

(m) "Water service connection" means the connection consisting of all pipes, fittings, and appurtenances from the water riser pipe to the water inlet pipe of the distribution system within the trailer.

(n) "Water riser pipe" means that portion of the water system which extends vertically to the ground elevation and terminates at a designated point at each trailer space.

(o) "Water station" means a facility for supplying potable water to the water storage tanks of trailers and other potable water containers.

(2) The department hereby adopts and incorporates by reference the provisions of ARM Title 17, chapter 30, subchapter 6 and Title 17, chapter 38, subchapter 2, which establish, respectively, maximum contaminant levels for public water supplies and surface water quality standards. Copies of ARM Title 17, chapter 30, subchapter 6 and Title 17, chapter 38, subchapter 2 may be obtained from the Department of Public Health and Human Services, Health Policy and Services Division, Food and Consumer Safety Section, 1400 Broadway, P.O. Box 202951, Helena, Montana 59620-2951.