Goodyear, AZ Environmental Rules: Stormwater Management (2026)

Article 16-7, Stormwater Pollution Elimination, is Goodyear's local implementation of its federal Clean Water Act obligations for the municipal separate storm sewer system. Section 16-7-3(A) states the baseline rule flatly: discharging anything other than stormwater into the MS4 is prohibited unless that discharge is separately authorized under a National Pollutant Discharge Elimination System (NPDES) permit. Subsection (B) then carves out a defined list of exempt discharges, including fire hydrant and water line flushing, uncontaminated foundation or footing drains, naturally occurring seeps and springs, non-agricultural irrigation runoff and residential lawn watering, dechlorinated swimming pool water, and firefighting flows, so ordinary household water use is not swept into the ban.

Beyond the discharge prohibition itself, § 16-7-4 requires anyone whose activities could add pollutants to the MS4, including construction disturbing one acre or more, to take practical measures to reduce them, bans littering into streets, storm drains and catch basins, requires sidewalk-fronting occupants to keep the walk free of dirt and litter, and requires grease, oil or sand interceptors at car washes, restaurants and similar facilities. Anyone wanting to physically connect to the MS4 or discharge floodwater into it must first get City permission and pay a connection fee under § 16-7-4(E), and making an unauthorized connection is itself a misdemeanor.

The Director of Public Works can also require a written permit before anyone modifies a watercourse's flow, builds within 20 feet of the top of a creek or channel bank, or places structures or loose material that could divert flood flows, under § 16-7-4(J). The authorized enforcement official inspects properties for compliance under § 16-7-5.