PRETREATMENT; MAINTENANCE OF FACILITIES AND BYPASS
Mesa City Code § 8-4-21
in effect8-4-21: - PRETREATMENT; MAINTENANCE OF FACILITIES AND BYPASS
(A) Where pretreatment facilities are provided for wastewater, the facilities shall be maintained continuously in satisfactory and effective operation by the owner at the owner's expense. The owner shall keep written records of all cleaning, repair, calibration, and maintenance required under this Subsection. The owner shall keep such records at the facility for a minimum of three (3) years.
(B) All bypasses are prohibited except in the following circumstances:
1. The bypass is unavoidable to prevent loss of life, personal injury, or substantial property damage;
2. No feasible alternatives to the bypass exist; or
3. The purpose of the bypass is maintenance which is essential to assure efficient operation and the bypass will not cause the exceedance of an effluent limitation contained in an NPDES Permit.
(C) If a permittee has prior knowledge of the need for a bypass, the permittee shall submit written notice of such fact to the City Manager or Water Resources Director at least ten (10) days before the date of the bypass. If an unanticipated bypass occurs, the permittee shall notify the City Manager or Water Resources Director within twenty-four (24) hours of receiving knowledge of the bypass and shall submit within five (5) days a written report to the City Manager or Water Resources Director specifying all of the following information:
1. A description of the bypass, including its cause and duration;
2. Whether the bypass has been corrected, and if not, specific plans, including time frames, to correct it; and
3. The steps being taken or to be taken to reduce, eliminate, and prevent a reoccurrence of the bypass.
(Ord. No. 5959, § 2, 8-25-25)
Source: City of Mesa, Arizona, Mesa City Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/az/mesa/codes/code_of_ordinances?nodeId=COOR_TIT8HESAEN_CH4SASERE_8-4-21PRMAFABYFetched: 11/1/2026