Stormwater regulations apply to construction sites, industrial facilities and municipalities such as the City of Mesa. The City of Mesa operates under a Municipal Stormwater Permit issued by the Arizona Department of Environmental Quality effective July 1, 2021. This permit requires the City to develop a Storm Water Management Plan (SWMP) identifying various best management practices (BMPs) to be implemented to reduce stormwater pollutants.

Examples of BMPs include our household hazardous material facility, inspecting storm drains and retention basins for pollutants, disseminating public education materials and screening stormwater discharge points for pollutants.

The Municipal Stormwater Permit also requires the City to develop and enforce an ordinance that prohibits the discharge of pollutants to the City's storm drain system and to post a copy of the City's SWMP and the most recent annual report on the City's website. Click the links below to access these documents.

• Mesa City Code (see Title 8, Chapter 5)
• Arizona Department of Environmental Quality Municipal Stormwater Permit [PDF]
• Stormwater Management Plan dated June 2023 [PDF]
• City of Mesa's most recent Stormwater Annual Report, July 2022 - June 2023 [PDF]

Stormwater Programs and Requirements

• Stormwater Impacts to the Environment
• How Can I Help?
• Environmental Requirements for Construction Activities
• Harvesting Rainwater for the Landscape [PDF]
• Low Impact Development Pilot Project in Mesa

The City of Mesa is a proud member of STORM.

Visit the STormwater Outreach for Regional Municipalities

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