(a) Lateral separation. Lay water mains at least ten feet laterally from existing and proposed sewers. Where existing conditions prevent a ten-foot lateral separation, the following shall be followed with approval of the engineer:
(1) Lay water main in a separate trench, with the elevation of the bottom of the water main at least 18 inches above the top of the sewer.
(2) Lay water main in the same trench as the sewer with the water main located at one side on a bench of undisturbed earth, and with the elevation of the bottom of the water main at least 18 inches above the top of the sewer.
(b) Crossing separation. Lay bottom of water main at least 18 inches above the top of the sewer. Where existing conditions prevent an 18-inch vertical separation, construct both the water main and sewer of ferrous materials and with joints that are equivalent to water main standards for a distance of ten feet on each side of the point of crossing.
(c) Crossing a water main under a sewer. When it is necessary for a water main to cross under a sewer, construct both the water main and the sewer of ferrous materials and with joints equivalent to water main standards for a distance of ten feet on each side of the point of crossing. A section of water main pipe shall be centered at the point of crossing. Both the water and sewer lines must be pressure tested to 150 psi to insure water tightness.
(Ord. of 11-7-16; No. 10-16)