§ 10. Water service

An approved water service plan from a municipal water supply, rural water supply corporation, municipal utility district, or privately owned water system or individual wells shall be furnished. The location of all fire hydrants must be clearly shown. Fire hydrants shall only be placed on line of adequate size and pressure to provide fire water per state standards or city standards. Water sources to fill fire trucks may be required in the subdivision. Verification must be provided by letter from the applicable water supplier, accompanied by a copy of the minutes of the board and/or other corporate approval, which certifies that the water supply and proposed meter/water distribution system are sufficient in quality, quantity, and pressure to adequately meet the future needs of the inhabitants of the proposed subdivision. The minimum standards consist of six inch lines-looped.

(a) Water lines. Water systems shall be of sufficient size to furnish adequate domestic water supply, to furnish fire protection to all lots, and to conform with any master water plan of the city. All water mains shall generally be constructed in street rights-of-way.

(b) Pipe. All water mains 12-inch and smaller shall be PVC or plastic pipe, with single rubber gasket joint, and a cement mortar lining of the "Enamaline" Type, or other Class 150 equal, and shall have a minimum cover of 42 inches. Water mains one-inch and larger shall be reinforced concrete steel cylinder pipe, Class 150 minimum.

(c) Size. A minimum of six-inch water line shall be specified except that four-inch lines may be allowed on short dead end streets when approved by the city's engineer.

(d) Fittings. Fittings shall be PVC.

(e) Fire hydrants. In general fire hydrants or risers shall be located so as to place all of every lot within a radius of 500 feet of a fire hydrant in residential areas and within a radius of 300 feet in commercial or industrial areas.

(f) Embedment. All water mains will be installed on a minimum of four inches of sand below bottom of pipe and backfilled to at least six inches over the top of the pipe with sand.

(g) Pressure test. After the complete installation, the waterworks shall be tested to a hydraulic test pressure of not less than 150 pounds per square inch, maintained over a continuous period of not less than four hours. If the test indicates a leakage in excess of ten gallons per inch of nominal diameter of pipe per mile during the four hour test period, then the leaks shall be found and repaired. All known leaks shall be stopped regardless of this requirement.

(h) Disinfection. Prior to the acceptance and before any open connection to any existing water main is made, the waterworks shall be disinfected with a minimum of 50 parts per million of available chlorine in all parts of the waterworks. After chlorination and flushing, the developer shall fill the waterworks with water and the city shall take samples of water taken from several locations, not less than one per section, or two per mile, for bacteriological tests. In the event the bacteriological tests are positive (unsatisfactory), the developer shall drain the lines, and repeat the chlorination until the test results are negative, or satisfactory.

(i) A water distribution modeling analysis shall need to be performed by the appropriate water provider and submitted to the city engineer for review and approval prior to the submittal of the final plat. In addition, once the fire hydrants are installed and pressurized, an independent testing laboratory shall field verify the residual pressure and flow required per the International Fire Code, as adopted by the city. The test results shall be submitted to the city engineer for review and comment as a part of the pat review process.

(Ord. No. 2009-07, § 1, 10-27-2009)