(1) (a) An adequate and potable supply of water must be provided in:

(i) any new or enlarged limited services campground approved by the department on or after April 28, 1995, unless the department grants a deviation for the campground under ARM 37.111.206(2) .

(ii) each trailer court; and

(iii) any general services campground.

(b) A supplier of a private or multiple family water supply shall conduct a coliform bacteria test of the system at least once in the spring quarter (April 1-June 30) and once in the summer quarter (July 1-September 30) of each year, and a nitrate test of the system at least once every 3 years.

(c) A supplier of a public water supply must undertake sample analyses for its system according to ARM Title 17, chapter 38, subchapter 2.

(d) An operator or licensee of a trailer court, general services campground, or limited services campground that has a water supply that is not used for human drinking or domestic purposes and is not analyzed under (b) or (c) above, shall post a sign at a conspicuous location near the water supply source stating that the water may be unsafe for human consumption or contact.

(2) An operator of a community public water supply system serving a trailer court must be certified in compliance with Title 37, chapter 42, MCA, and ARM 17.40.201 through 17.40.203 and 17.40.206 through 17.40.208.

(3) A water supply system is determined to have failed and to require replacement or repair when the water supply becomes unsafe (exceeds the maximum contaminant levels as specified in ARM 17.38.201 through 17.38.207) or inadequate (less than 20 psi measured at the extremity of the distribution line during peak usage) .

(4) Extension, alteration, repair, or replacement of a water supply system, or development of new water supply systems must be in accordance with ARM 17.36.301 through 17.36.305 and, if the system is a public water supply system, ARM 16.20.405, 17.38.101 and 17.38.105.

(5) The department hereby adopts and incorporates by reference the provisions of ARM 17.40.201 through 17.40.203 and 17.40.206 through 17.40.208, which describe operator certification requirements; ARM Title 17, chapter 38, subchapter 2, stating maximum allowable contaminant levels, sampling, and other requirements for public water supplies; and ARM 17.36.301 through 17.36.305, which describe water system review requirements for subdivisions. Copies of the above mentioned rules may be obtained from the Department of Public Health and Human Services, Health Policy and Services Division, Food and Consumer Safety Section, P.O. Box 202951, Helena, MT 59620-2951, or the Water Quality Division, Department of Environmental Quality, PO Box 200901, Helena, MT 59620-0901.