Welcome to the California Regional Water Quality Control Board, Central Valley Region Welcome to the California Environmental Protection Agency
Discharges from Irrigated Lands

Irrigated Lands Regulatory Program (ILRP) - Water Quality

Coalition Submittals & Reviews

Monitoring and reporting are required to assess the water quality in the Central Valley. The ILRP provides public access to monitoring reports, assessment reports, management plans, and surface water quality data collected since 2004 under the Program. Note: Groundwater quality data collection will begin in 2017.

ilrp map

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--Web page updated 03/08/2017