(a) All sets of plans which include plans for water mains shall include the current Township Water Main Detail Sheets, which shall be considered an inseparable part of the plans when said plans are approved. Plans must be designed in accordance with the current detail sheets and standards noted herein.
(b) All water mains shall be shown in both plan and profile view.
(c) The plan shall indicate the proposed finished grade elevations of all hydrants, gate wells, and/or other structures, and, where a public main or hydrant is not located in a public street, shall show an easement for the main and hydrants. The easement shall extend a minimum of six feet on each side of the centerline of the main. All water main easements shall abut a property line, where applicable, to avoid any gaps that would inhibit future off-site connections and looping to the public water system. Any gaps will be identified by the Township Engineer and will need to be eliminated prior to recordation of the easement(s).
(d) The type, capacities, location, and layout of a building service water supply pipe shall comply with all requirements of the Water and Sewers Department.
(e) The type of pipe and joints indicated on the plans shall be in accordance with the current Township standards.
(f) All water mains shall be installed with a minimum cover of five feet below finished grade. Where water mains must dip to pass under a storm sewer or sanitary sewer, the minimum clearance shall be eighteen inches. At all open drain crossings, a five-foot minimum clearance between the bottom of the drain and the top of the water main shall be provided. The sections which are deeper than normal shall be kept to a minimum length by the use of vertical bends properly anchored.
(g) Water mains, other than hydrant leads, shall be eight inches minimum in diameter. All single hydrant leads longer than 100 feet shall be eight inches minimum diameter unless a pressure and fire flow analysis is provided to show there is adequate fire flow availability in the longer hydrant lead.
(h) All valves, except hydrant valves, shall be installed in a standard gate well. Valves shall be located in the system such that not more than four valves need be turned off to isolate any individual section of water main. Moreover, sufficient valves shall be placed such that not more than 30 dwelling units or service establishments shall be serviced within such section of water main that can be isolated. Where possible, valves shall be located at street intersections five feet from the intersecting street right-of-way line.
(i) Hydrants shall be installed along the water main at least every 500 feet. In Commercial and Industrial Districts, additional hydrants may be required by the Fire Marshal. Hydrants shall be installed at the ends of all dead-end water mains.
(j) Hydrant removals and relocations that are incidental to any site improvements may need to be replaced after review of their condition by personnel of the Department of Public Services. Costs incurred for those hydrant relocations and possible replacements shall be solely an expense to the developing party and be considered part of the site improvement costs to the property owner.
(Ord. 281. Passed 10-2-89; Ord. 481. Passed 10-24-22.)