Peoria, AZ Environmental Rules: Stormwater Management (2026)

Section 24-130(a) prohibits discharging or causing to be discharged into the municipal storm sewer system or watercourses any materials, including pollutants or water containing pollutants, that cause or contribute to a violation of water quality standards; the ban does not apply to stormwater itself. The section lists eighteen specific exemptions, covering water line flushing, landscape irrigation, diverted stream flows, uncontaminated groundwater, air conditioning condensate, individual residential car washing, and discharges from firefighting activities, among others. A discharge covered by a valid AZPDES permit from the Arizona Department of Environmental Quality or EPA is also allowed as long as the discharger stays in full compliance with that permit.

Section 24-130(b) separately bans illicit connections to the storm drain system outright, including connections made in the past regardless of whether they were legal when installed, and treats connecting a sewage line to the municipal separate storm sewer system as a violation. Enforcement runs through Section 24-124: the City Manager issues a written notice of violation that can require monitoring, elimination of the illicit connection, a stop to the violating discharge, remediation, and restoration of the affected property, plus civil penalties covering the City's costs.

A recipient has 30 calendar days to appeal to the City Manager, who must hold a hearing within 30 days of the appeal, and whose decision is final. If the violation is not fixed after that process, City representatives can enter the property, complete the abatement themselves, and bill the owner. Commercial and industrial property owners also carry an ongoing duty under Section 24-133 to use best management practices, at their own expense, to keep prohibited materials out of the storm drain.