Phoenix regulates stormwater through City Code Chapter 32C (Stormwater Quality Ordinance) and the Stormwater Policies and Standards Manual. Construction sites must prepare a stormwater pollution prevention plan (SWPPP) and conduct monthly inspections plus inspections within 24 hours of rainfall greater than 0.5 inches.
Phoenix enforces stormwater management regulations to prevent flooding and protect water quality. New construction and major renovations must include stormwater management plans. Impervious surface limits may apply in residential zones. Low-impact development techniques like rain gardens, permeable pavers, and bioswales are encouraged or required. Erosion and sediment control plans needed during construction. Post-construction stormwater facilities must be maintained by property owners. Municipal separate storm sewer system (MS4) permits govern city-wide discharge.
Failure to implement stormwater plan: stop-work order. Illicit discharge to storm drains: fines $500 to $10,000. Maintenance failures: notice and fines after non-compliance.
Phoenix, AZ
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Phoenix, AZ
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Phoenix, AZ
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Phoenix, AZ
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Phoenix, AZ
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Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle stormwater management.
See how Phoenix's stormwater management rules stack up against other locations.
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