All taps into water mains shall be made by or under the direct supervision of the Superintendent and in accord with the following:
(Code of Iowa, Sec. 372.13[4])
1. All taps in the water main must be at least 12 inches apart and on the side and near the top and not in any case within 18 inches of the hub.
2. Service connections shall be three-fourths inch type K copper (ASTM B88) or schedule 40 PVC (polyvinyl chloride) (ASTM D1784 and D1785). Where good engineering design requires, larger service lines may be required.
3. Service lines shall be installed at least five and one-half feet below finished ground level. Pipe must be laid sufficiently waving, and to such depth, as to prevent rupture from settlement or freezing.
4. In any instance in which a service line for requested water service exceeds 110 feet in length, the property owner shall, before water service is extended to such owner, agree to pay the cost of installation of a meter pit in a location to be designated by the City, and said property owner shall pay the cost of installation of said pit prior to the furnishing of water to said property. The meter pit shall thereafter be the property of the City.