Waste Discharge Requirements

WDR

Water Quality Compliance – Rice Waste Discharge Requirements

The Central Valley Regional Water Quality Control Board (CVRWQCB) adopted the Rice Waste Discharge Requirements (Rice WDR) Order on March 27, 2014. Rice growers north of Sacramento submit the Farm Evaluation and the Nitrogen Management Plan to the California Rice Commission (CRC) annually by 1 March. As a mandatory requirement, the CRC must provide the CVRWQCB with the acreage not included in the Farm Evaluation Summary Report. The CVRWQCB will then proceed with further action.

WDR Stories

Drinking Water Well Testing
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Drinking Water Well Testing

Reminder for each Grower to complete the required testing

The California Rice Commission’s Waste Discharge Requirement (WDR) requires, beginning in 2022, each grower (or landowner) to conduct annual testing for nitrates in all drinking water supply wells present on parcels where rice is produced. The results are reported from the analytical laboratory to the State’s GeoTracker database.

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Starting Soon: Rice Water Quality Monitoring
WDR •

Starting Soon: Rice Water Quality Monitoring

Thiobencarb Monitoring

Thiobencarb monitoring starts April 26 and ends June 28, 14 times at the four core sites. We base the monitoring on planting dates and timing of thiobencarb applications from the county agricultural commissioner offices sharing dates on the notices of intent. Some rice has been planted and treated, which will be captured with the current monitoring plan. 

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