*** Please visit www.northocirwm.org for the most up-to-date information on Integrated Regional Water Management (IRWM) efforts in North and Central Orange County. *** *** Please visit www.…

*** Please visit northocirwm.org  (North and Central Orange County) or southocirwm.org (South Orange County) for the most up-to-date information on the Stormwater Resources Plan. ***…

A number of documents are available on these pages that describe the regulations and programs aimed at preventing and controlling the discharge of pollutants to the municipal stormdrain system and…

The specific water pollutant control elements of the Orange County Stormwater Program are documented in the 2003 Drainage Area Management Plan (DAMP) which is the Permittees’ primary policy, planning…

The County of Orange and municipalities of south Orange County have prepared and submitted to the San Diego Regional Water Quality Control Board on January 30, 2020, a South OC Water Quality…

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Please visit www.southocirwm.org for the most up-to-date information on Integrated Regional Water Management (IRWM) efforts in South Orange County. **SOUTH ORANGE COUNTY ANNOUNCES PROPOSITION 1 IRWM…

Regulatory Background The California State Water Resource Control Board and the nine Regional Water Quality Control Board (RWQCB), through the Clean Water Act, help address water pollution by…

The County of Orange and municipalities of south Orange County have prepared and submitted to the San Diego Regional Water Quality Control Board on January 30, 2020, a South…