Environmental Rules in Hemet, CA (2026)
5 verified environmental rules for Hemet, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Hemet bans depositing pollutants into streets, gutters, storm drains, or any public or private property in the city, and requires businesses and developers to implement best management practices.
Hemet Stormwater Discharge Rules
Some RestrictionsHemet City Code § 14-491(a)
It is a violation of this article to throw, deposit, leave, maintain, keep, or permit to be thrown, deposited, placed, left or maintained, any pollutant in or upon any street, alley, sidewalk, storm drain, inlet, catch basin, conduit or other drainage structures, business place, or upon any public or private plot of land in the city.
Erosion Control
Hemet grading permits must include an erosion and sediment control plan meeting Clean Water Act, MS4, and NPDES standards, maintained through every rainstorm during construction.
Hemet Construction Erosion Control Rules
Some RestrictionsHemet City Code § 67-18(a)
All erosion and sediment control plans shall conform to the requirements of the Grading Standards and meet the objectives and requirements of the Clean Water Act and its associated regulations, the city's MS4 permit, the construction general permit, NPDES requirements, and any other law, regulation, ordinance, permit or authorization applicable to activities authorized by the permit.
Flood Zones
A city development permit is required before any construction or land alteration in a FEMA-mapped special flood hazard area in Hemet; violating the floodplain rules is a misdemeanor enforced by the city engineer.
Hemet Floodplain Development Permit Rules
Significant RestrictionsHemet City Code § 14-256 (see also § 14-238)
A development permit shall be obtained before any construction or other development begins within any area of special flood hazard established in section 14-237. ... No structure or land shall hereafter be constructed, located, extended, converted, or altered without full compliance with the term of this article and other applicable regulations. Violation of the requirements ... shall constitut...
Defensible Space
In Hemet's wildland interface zones, property owners must clear and thin native vegetation around structures to distances of 30 to 300 feet depending on slope direction and fire hazard severity.
Hemet Defensible Space Clearance
Some RestrictionsHemet City Code § 14-421(1)
Clear and thin all native vegetation in proximity to windows and other openings and to the following distances based on: Fire hazard severity zones:a.Upslope: moderate, 30 feet; high, 60 feet; extreme, 100 feet.b.Across slope: moderate, 60 feet; high, 100 feet; extreme, 200 feet.c.Downslope: moderate, 100 feet; high, 200 feet; extreme, 300 feet.(2)Provide plants that have been tested and proved...
Flood Elevation Requirements
Hemet requires new and substantially improved buildings in mapped flood hazard areas to elevate the lowest floor to or above the base flood elevation, verified by a registered engineer or surveyor.
Hemet Base Flood Elevation Rules
Some RestrictionsHemet City Code § 14-276(c)(1)
Residential construction, new or substantial improvement, shall have the lowest floor, including basement: a.In an AO zone, elevated above the highest adjacent grade to a height equal to or exceeding the depth number specified in feet on the FIRM, or elevated at least two feet above the highest adjacent grade if no depth number is specified. b.In an A zone, elevated to or above the base flood e...
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County ordinances apply to unincorporated areas and may supplement Hemet city rules.
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