Irvine, CA Environmental Rules: Stormwater Management (2026)
Key Facts
- Core prohibition
- No illicit connections or prohibited discharges
- Legal basis
- Santa Ana RWQCB NPDES permit, Order R8-2009-0030
- WQMP required for
- Priority development and major redevelopment
- 1st infraction fine
- $100
- 3rd+ infraction fine
- Up to $500 each
- Misdemeanor max
- $1,000 fine or 6 months jail
- Enforcing authority
- Authorized Inspector / Chief Building Official
Summary
Irvine bans illicit connections to the stormwater drainage system and any discharge that pollutes, contaminates, or violates a water quality standard under Municipal Code § 6-8-302. New development and significant redevelopment projects must also prepare a Water Quality Management Plan under § 6-8-303. The Chief Building Official's Authorized Inspectors enforce both sections, with civil, administrative, and criminal remedies reaching every violator.
A.Unless otherwise permitted by this chapter, no person shall:1.Construct, maintain, operate and/or utilize in any way an illicit connection.2.Cause, allow, facilitate, or contribute to any prohibited discharge...B.No person shall cause, facilitate or contribute to a discharge into the stormwater drainage system...of:1.Any substance causing, or threatening to cause, a condition of pollution, contamination, or a nuisance, as that term is defined in Section 13050 of the California Water Code.2.Any substance causing or contributing to an exceedance of any water quality standard for surface water or groundwater.3.Any substance containing pollutants which have not been reduced to the maximum extent practicable.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 20 | Zoning: Supplement 16).
Full Breakdown
Chapter 3 of the Pollution division (Sections 6-8-301 through 6-8-307) implements Irvine's share of the Santa Ana Regional Water Quality Control Board's NPDES permit for Orange County and its 26 co-permittee cities. ' Liability attaches irrespective of negligence or intent under Section 6-8-302(E). A list of 'discharge exceptions' keeps ordinary flows legal -- stormwater itself, landscape irrigation, air conditioning condensate, dechlorinated pool discharges (but not pool filter backwash), and noncommercial vehicle washing among them -- but an Authorized Inspector can revoke an exception with 30 days' written notice if it threatens receiving waters.
Section 6-8-303 layers on a development-side requirement: priority development and significant redevelopment projects must prepare a Water Quality Management Plan consistent with the County's Drainage Area Management Plan and Irvine's own local implementation plan, submitted during the discretionary land-use review, the ministerial building/grading permit process, or both. Enforcement under Section 6-8-305 spans notices of noncompliance, administrative compliance orders, cease-and-desist orders, cost recovery, nuisance abatement (including emergency abatement without a warrant for imminent threats), and criminal citation.
Violations & Fines
Constructing or using an illicit connection, or discharging any pollutant, contaminated substance, or nuisance-causing material into the storm drain system, violates Section 6-8-302 regardless of intent. First-offense infractions run $100, rising to $200 for a second and up to $500 for each further violation within a year (§ 6-8-305(C)(2)); a misdemeanor charge instead carries up to a $1,000 fine and six months in jail, with each day a separate violation.
Frequently Asked Questions
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Sources & Official References
Other rules in Irvine
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Stormwater Management in Nearby Cities
How other cities in Orange County handle stormwater management.