A. Adequate Public Facilities. Adequate sanitary sewer, storm drainage, and water system facilities, including required fire flow, shall be provided by the developer concurrent with the development. Specific exception to this standard may be approved for development in the MU-H Overlay District; see Chapter 18.75 MCC.

B. Design. The design of sanitary sewer, storm drainage, and water system facilities shall conform to the city’s standard details and engineering policies and private utility company standards where these are separately provided. An approved grading and drainage plan by the engineering division is required prior to development approval. Specific exception to this standard may be approved for development in the MU-H Overlay District; see Chapter 18.75 MCC.

C. Underground Facilities. All sanitary sewer and water system facilities shall be located underground within public rights-of-way, public utility easements or exclusive easements, with the exception of some valves, mechanical and electrical devices and similar devices, which must be located above ground. Storm water retention facilities are permitted on the surface of the land.

D. Storm Water Retention Required. Storm water retention is an integral component of the city’s storm water management program and compliance with Arizona Pollutant Discharge Elimination System requirements. Due to limitations of discharge outlets, on-site retention is a high priority element for a successful program to minimize flooding and related property damage. [Ord. 14-12 § 1; Res. 14-36 § 402.04.]