Environmental Rules in Chandler, AZ (2026)
3 verified environmental rules for Chandler, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Chandler requires new development to submit a stormwater retention plan and adopts Maricopa County drainage standards by reference. Retention basins must limit water depth to 3 feet in a 100-year, 2-hour storm, keep side slopes no steeper than 4:1, and fully drain within 36 hours under City Code Section 45-3.
Chandler Stormwater Retention Basin Design Standards
Some RestrictionsCity of Chandler, AZ, City Code § 45-3
45-3.B. All retention basins shall have a design capacity such that water depth is limited to a maximum of three (3) feet resulting from a one hundred-year, two-hour storm. The City Engineer may approve a greater water depth when a positive method of water disposal, such as pumping facilities, is available and under the control of the City or another governmental agency. The depth of the basin ...
Erosion Control
Chandler subdivision developers must provide proper and adequate stormwater drainage for both graded private lots and public streets before a plat is approved. The City Engineer or Development Services Director sets the type, extent, location and capacity of drainage facilities for each project under City Code Section 48-12.9.
Chandler Subdivision Grading and Drainage Rule
Some RestrictionsChandler City Code § 48-12.9 (Chapter 48, Subdivisions)
48-12.9. Storm drainage. The subdivider shall make proper and adequate provision for disposal of stormwaters; this shall apply equally to grading of private properties and to public streets. Existing major watercourses shall be maintained and dedicated as drainage ways. The type, extent, location and capacity of drainage facilities shall be determined for the individual subdivision by the Direc...
Flood Zones
Chandler doesn't run its own floodplain permitting desk. City Code § 43-5.1 hands floodplain management for flood-hazard zones inside city limits to the Maricopa County Flood Control District, so development in a mapped flood zone needs a County floodplain use permit before the City will issue anything.
Chandler Defers Floodplain Rules To Maricopa County
Some RestrictionsChandler City Code § 43-5.1 (Ord. No. 4788, § 3, 1-11-18)
In accordance with A.R.S. Article 1, Chapter 21, Title 48, floodplain management within the City is hereby declared to be vested in the Maricopa County Flood Control District; and development within areas designated as flood hazard zones located within City limits shall be subject to such rules and regulations as may be established by the State and the Maricopa County Flood Control District in ...
Looking for Maricopa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Chandler city rules.
Environmental Rules in Maricopa County →