All persons connecting to a City-owned service connection shall use approved type K copper pipe up to and including two inches (2") in nominal diameter in, under, across or through the streets, avenues, alleys, thoroughfares, or dedicated public rights of ways or easements of the City and extending to the property line of the owner. All private service lines shall be laid not less than three feet (3') below the surface of the ground or equal distance below the established or predicated grade of any street. (Ord. 659, 9-27-1994)