After grading of street rights-of-way is completed and approved and before any base is applied, underground work to be installed such as water mains, sewerage mains and the like, shall be installed by the developer and approved by the City Manager.
(A) Water supply system. When any part of the subdivision lies within 200 feet of the municipal water system, it shall be properly connected with the municipal water system or an alternate community system approved by the County Health Officer, and shall be constructed in such a manner as to serve adequately for both domestic use and for fire protection on all lots shown on the subdivision plat.
(1) As provided in § 51.031 of the city’s water and sewer regulations, within the corporate limits, the subdivider shall provide all pipe and necessary materials, labor and the equipment necessary to install water lines.
(2) Outside the corporate limits when connected to municipal water, all of the costs of pipes and other necessary material and installation of water lines shall be borne by the developer.
(3) Fire hydrants both inside and outside the city limits shall be installed in accordance with requirements of the fire underwriters. The size of water mains both inside and outside the city limits shall be at least eight inches. The location and types of valves and hydrants, the amount of soil cover over the pipes and other features of the installation shall be approved by the City Manager and shall conform to accepted standards of good practice for municipal water systems.
(B) Sanitary sewers. When any part of the subdivision lies within 200 feet of the municipal sewerage system, sanitary sewers shall be installed in such a manner as to serve adequately all lots with a connection to the public system.
(1) As provided in § 51.031 of the city’s water and sewer regulations, inside the corporate limits, sanitary sewers shall be installed by the developer.
(2) Outside the corporate limits, when connecting to municipal sewers, the cost of pipe, materials and installation of sewer lines shall be borne by the developer. Sewer connections shall comply with the regulations of the State Board of Health and shall be constructed under the supervision and approval of the County Health Officer and the City Manager. Where lots cannot be economically connected with a sewerage system, they must be at least 20,000 square feet in area and contain area for the installation of approved septic tank and disposal fields and must be approved in writing by the County Health Officer as stated in § 51.031 of the city’s water and sewer regulations.
(C) Storm drainage. An adequate drainage system, including necessary open ditches, pipes, culverts, drop inlets, bridges, fill-in lots and the like, shall be provided for the proper drainage of all surface water. The subdivider shall connect to the storm drainage system where available; if not accessible, the subdivider shall provide open drainage ditches necessary to carry the water in a manner approved by the City Manager.
(1) All surface drainage courses shall have at least a one to one side slope having at least one foot of horizontal distance for each one foot of vertical drop.
(2) The minimum grade along the bottom of a surface drainage course shall be a slope of 0.4%, or a vertical fall of approximately one foot in each 300 feet of horizontal length.
(3) Cross pipes under streets shall be concrete or corrugated metal. Pipes larger than 36 inches in diameter shall be reinforced concrete.
(4) Culverts shall be provided to accommodate all natural water flow and shall be of sufficient length to permit a full width roadway and the required slopes. The size openings to be provided shall be determined by the City Manager, but in no case shall be less than 12 inches. Cross drains shall be built on a straight line and grade and shall be laid on a firm base, but not on rock. Pipes shall be laid with the spigot pointing in the direction of the flow and with the ends filled and matched to provide tight joints and a smooth uniform invert. They shall be placed at a sufficient depth below the roadbed to avoid dangerous pressure of impact, and in no case shall the top of the pipe be less than one foot below the roadbed and constructed of reinforced material.
(2009 Code, § 154.44) (Ord. passed 5-1-1972; Ord. passed 9-12-1995) Penalty, see § 10.99