A minimum horizontal distance of ten (10) feet shall be maintained between parallel water and sewer lines. At points where sewers cross water mains, the sewer shall be constructed of cast iron pipe or encased in concrete for a distance of ten (10) feet in each direction from the crossing, measured perpendicular to the water line. This will not be required when the water main is at least two (2) feet above the sewer.
(Code 1991, § 12-494)