Wis. Admin. Code SPS § SPS 384.30
ASME A112.3.1; ASME B36.19 / B36.19M; ASTM A269/A269M; ASTM A312/A312M; ASTM A450/A450M; ASTM A778/A778M; AWWA C220. Vitrified clay (extra strength) ASTM C700. a. Thermoplastic sewer pipe shall be installed in accordance with ASTM D2321. b. Copper tubing, type M, may not be installed underground.