Environmental Rules in Garden Grove, CA (2026)
5 verified environmental rules for Garden Grove, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Garden Grove Municipal Code Section 6.40.040 bans illicit connections to the City's stormwater drainage system and any 'prohibited discharge' into it, implementing the City's National Pollutant Discharge Elimination System permit under Chapter 6.40. New development and significant reconstruction projects must also follow the County's Drainage Area Management Plan before the City issues a grading, building, or plumbing permit.
Garden Grove Stormwater Discharge Rules
Significant RestrictionsGarden Grove, CA, Municipal Code § 6.40.040 (Prohibition on Illicit Connections and Prohibited Discharges); see also § 6.40.070(C) (Criminal Sanctions)
No person shall: A. Construct, maintain, operate, and/or utilize any illicit connection; B. Cause, allow, or facilitate any prohibited discharge; C. Act, cause, permit, or suffer any agent, employee or independent contractor, to construct, maintain, operate or utilize any illicit connection, or cause, allow, or facilitate any prohibited discharge.
Coastal Development
Garden Grove is an inland city in Orange County and is not within the California Coastal Zone. The California Coastal Commission's coastal development permit requirements do not apply to properties in Garden Grove. Nearby coastal cities such as Huntington Beach and Seal Beach are subject to coastal regulations.
Garden Grove Coastal Development Regulations
Some RestrictionsCalifornia Public Resources Code Section 30103 (Coastal Act of 1976)
Public Resources Code (PRC) Section 30103(a) specifically defines California's Coastal Zone as that land and water area of the State of California from the Oregon border to the border of the Republic of Mexico depicted on maps identified and set forth in Section 17 of that chapter of the Statutes of the 1975-76 Regular Session enacting PRC Division 20 (the Coastal Act of 1976). PRC Section 3010...
Flood Zones
Garden Grove requires a development permit before any construction begins in an area of special flood hazard, and Municipal Code Section 9.08.030.040 adopts FEMA's February 18, 2004 Flood Insurance Study and Flood Insurance Rate Maps as the legal boundary of that Flood Hazard Overlay Zone. Building or altering a structure there without that permit is a misdemeanor under the same section, enforced by the Floodplain Administrator.
Garden Grove Flood Hazard Overlay Zone Rules
Significant RestrictionsGarden Grove, CA, Municipal Code § 9.08.030.040(A)(5)-(6) (Flood Hazard Overlay Zone)
The areas of special flood hazard identified by the Federal Insurance Administration (FIA) of the Federal Emergency Management Agency (FEMA) in the Flood Insurance Study (FIS) dated February 18, 2004, and accompanying Flood Insurance Rate Maps (FIRMs) and Flood Boundary and Floodway Maps (FBFMs), dated February 18, 2004, and all subsequent amendments and/or revisions, are hereby adopted by refe...
Defensible Space
Garden Grove's Fire Code amendments require new construction next to hazardous brush to meet Orange County Fire Authority Guideline C-05 fuel modification standards, force property owners to cut and remove ignitable weeds, grass and vines, and let the Fire Code Official clear brush within 10 feet of roadways. Burning wood is barred inside any fuel modification zone or Wildfire Risk Area.
Garden Grove Fuel Modification and Defensible Space
Some RestrictionsGarden Grove, CA, Municipal Code § 18.16.020 (Amendments to the 2025 California Fire Code), adding Fire Code §§ 304.1.3 and 324.1
304.1.3 Vegetation. Weeds, grass, vines or other growth that is capable of being ignited and endangering property, shall be cut down and removed by the owner or occupant of the premises. Vegetation clearance requirement in urban-wildland interface areas shall be in accordance with Part 7, the California Wildland-Urban Interface Code. Type, amount, arrangement, and maintenance of vegetation in a...
Flood Elevation Requirements
In Garden Grove's Flood Hazard Overlay Zone, new residential construction must have its lowest floor built at or above the base flood elevation, and the state recommends going two feet higher for extra freeboard. A development permit from the Floodplain Administrator is required before any building starts in the mapped hazard area.
Garden Grove Base Flood Elevation Rules
Significant RestrictionsGarden Grove, CA, Municipal Code Sec. 9.08.030.040(C)(1)(c)(i)
i. Residential construction, new or substantial improvement, shall have the lowest floor, including basement in: (A) Zone A, elevated to or above the base flood elevation... (The State of California recommends the lowest floor be elevated at least two feet above the base flood elevation, as determined by the community.) (B) All other zones, elevated to or above the base flood elevation. (The St...
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County ordinances apply to unincorporated areas and may supplement Garden Grove city rules.
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