Current through Register Vol. XLI, No. 50, December 13, 2024
Section 64-41-3 - Water Supply (Section 8 of the Mobile Home Regulations)3.1. An adequate and safe supply of water under pressure shall be provided to each mobile home lot. The source, treatment and distribution system shall be constructed and operated in accordance with the rules and regulations of the state department of health. Records should be kept of the location of water lines, valves, meters, connections and other appurtenances to facilitate repairs or inspections when necessary.3.2. When feasible, water shall be obtained from an approved public water supply system in order to obtain the advantages of qualified supervision, which provides added assurance that the quality and quantity of water will be adequate at all times for domestic and firefighting purposes. Where public water supply systems are not available within a reasonable distance for extension to a mobile home development, the best available private water supply source should be developed.3.3. All wells, springs, reservoirs, treatment and storage facilities and distribution systems shall be constructed in accordance with the publications, EW-98, "Water Supply Regulations"; EW-99, "Design Standards for Public Water Supply Systems"; and EG-6, "Permit Procedures and Design Requirements for Small Sewage and Water Systems", issued by the state department of health.3.4. Riser Pipes 3.4.1. The location of the water riser pipe on the stand is of great importance. Two principles should be carefully considered. First, a location should be selected that is as close as possible to the service connection of the mobile home. This reduces long service runs, long heater tapes, and resultant high electric bills and waterline freezing. Second, there shall be a safe clearance (10 ft. minimum) between the water riser pipes and the sewer riser pipes. The ANSI Standard for Mobile Homes, A119.1-1971, specifies that the water inlet should be located as near as possible to a point 30 feet from the front of the mobile home and on the left (road side) of the center line. A good location for the water riser pipe is approximately 56 inches from the center line of the stand, measured across the mobile home stand, and 30 feet from the front edge of the stand. The front edge of the stand should coincide with the front wall of the mobile home.3.4.2. The water service connection must utilize a riser pipe of at least 3/4" diameter, terminating at least 4 inches above the ground surface, surrounded and supported by sand backfill, and protected against freezing. The ground surface around the riser pipe should be graded so that it diverts surface drainage away from the connection.3.4.3. A service box with a shutoff valve should be located in a convenient and accessible place near the riser pipe. The shutoff valve should be installed below the frostline. Stop and waste valves shall not be installed in an underground service line; a stop and waste valve is any valve that permits drainage through a port or drain hole provided in the valve.3.4.4. The riser pipe outlet should be threaded so that a screw connection can be made between the outlet and the mobile home water piping system, and the outlet shall be plugged or capped when not in use. Each water service connection also should have a shutoff valve and a nonfreezing wall hydrant located on the water pipe outlet of the mobile home.3.4.5. Flexible metallic tubing, such a cooper, is suggested for connecting the mobile home to the riser pipe because it provides an effective method of electrically grounding the mobile home to a metallic water supply system, and it also facilitates the use of electrical heater tapes, which can be used during cold weather to effectively control freezing.3.5. Distribution and Storage 3.5.1. To meet ordinary domestic needs, the water distribution system must supply water at a minimum flow pressure of 20 pounds per square inch at all service connections. When pressure in the system is likely to exceed 80 pounds per square inch, a water pressure reducing valve should be installed on the central supply line to the development to protect the water piping system of the individual mobile home. The pipe sizing and other design features of the system shall be based upon the estimated maximum instantaneous water demand rather than upon the average daily demand.3.5.2. If the domestic water system is to supply sufficient water for fire-fighting purposes in accordance with requirements of the national fire protection association, it will be necessary to use greater design values and quantity of flow.3.5.3. Water storage facilities shall be provided when the water supply system cannot meet peak demands. If the rate of supply from a private well, public main, or other means of supply is not greater than or equal to the peak demand, storage facilities shall be included in the distribution system.3.5.4. All distribution lines and storage facilities shall be disinfected in accordance with the regulations of the state department of health prior to use.