Environmental Rules in Avondale, AZ (2026)
5 verified environmental rules for Avondale, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Avondale bans releasing pollutants into its public storm drain system in amounts that could violate a water quality standard or the city's NPDES permit, and treats such a release as a public nuisance. The NPDES coordinator, the city manager or a designee, can inspect property, require best management practices and pursue civil penalties up to $2,500 per violation.
Avondale Stormwater Discharge Rules
Significant RestrictionsAvondale City Code sec. 8-63 (Declaration of nuisance) and sec. 8-70 (Civil penalties)
It is hereby declared to be a public nuisance for any person to directly or indirectly release significant materials, pollutants, or stormwater without proper authorization in quantities, velocities or concentrations that cause or contribute to, or may reasonably be expected to cause or contribute to: (i) damage to a publicly-owned right-of-way or the public storm drain system; (ii) a violation...
Erosion Control
Any Avondale construction project disturbing one acre or more of land must prepare and follow a stormwater pollution prevention plan (SWPPP) before a construction permit is issued, spelling out erosion and sediment control measures. The permittee must implement, inspect and log those measures throughout construction under the NPDES coordinator's review.
Avondale Construction Erosion & Sediment Control
Significant RestrictionsAvondale City Code sec. 8-64 (Requirement for new development projects to submit stormwater pollution prevention plans) and sec. 8-65
Any entity applying for a permit, authorization, license, or permission for construction activity that will disturb one (1) or more acres of land shall prepare a stormwater pollution prevention plan (SWPPP) for the management of stormwater discharges from the proposed construction site. The applicant shall refer to Volume III - Erosion Control of the Drainage Design Manual by the Flood Control ...
Flood Zones
Any construction or development within an Avondale special flood hazard area, including placing a manufactured home, needs a development permit before work begins. The floodplain administrator, the city manager or designee, reviews detailed elevation and floodproofing plans under Chapter 8's floodplain management article.
Avondale Floodplain Development Permit Rules
Significant RestrictionsAvondale City Code sec. 8-32 (Establishment of development permit)
A development permit shall be obtained before construction or development begins, including placement of manufactured homes, within any area of special flood hazard established in section 8-7. Application for a development permit shall be made on forms furnished by the floodplain administrator and may include, but not be limited to, plans in duplicate drawn to scale showing the nature, location...
Vehicle Idling Restrictions
Avondale City Code Section 23-62(e) caps diesel vehicle idling at five consecutive minutes for any registered highway vehicle with a gross vehicle weight rating over 14,000 pounds. Violators face a $100 civil penalty for a first offense and $300 for each later one, and truck stops and distribution centers must post signs stating the limit and the fines.
Avondale Diesel Truck Idling Limit
Some RestrictionsAvondale City Code Sec. 23-62(e)
(e)(1) Unless specifically excepted as set forth below, no owner or operator of a vehicle shall permit the engine of such vehicle to idle for more than five (5) consecutive minutes if such vehicle meets all of the following criteria: (a) It is designed with a gross vehicle weight rating of more than fourteen thousand (14,000) pounds. (b) It is required under Arizona law ... to be registered. (c...
Flood Elevation Requirements
Avondale requires new construction and substantial improvements in a flood hazard area to have their lowest floor elevated to or above the regulatory flood elevation, which the code sets one foot above base flood elevation. That one-foot freeboard applies to residential structures, manufactured homes and, with floodproofing, non-residential buildings alike.
Avondale Base Flood Elevation Freeboard Rule
Significant RestrictionsAvondale City Code sec. 8-5 (Definitions - Regulatory flood elevation) and sec. 8-40(c)(1)
"Regulatory flood elevation (RFE)." An elevation one (1) foot above the base flood elevation for a watercourse for which the base flood elevation has been determined and shall be determined by the criteria developed by the Director of the Arizona Department of Water Resources for all other watercourses.
Looking for Maricopa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Avondale city rules.
Environmental Rules in Maricopa County →