Water Quality

Water Quality •

Mandatory Thiobencarb Stewardship Training NOW ACTIVE

Course is available through the Calricenews.org website.

The link for the online mandatory thiobencarb stewardship training is now active and available through the Commission’s industry website here. 

The Department of Pesticide Regulation (DPR) lists thiobencarb as a restricted material and requires users of thiobencarb to complete stewardship training. This training is provided by the California Rice Commission in partnership with the local County Agricultural Commissioner’s offices. The course will be available through the end of June.

The course is approximately one hour long. The certificate of completion is available for download after finishing the course and is required by the County Agricultural Commissioner’s office to add thiobencarb to your use permit.  

We applied for and received approval for one hour of CE credit from DPR (0.5 Laws, 0.5 other). You will need to select this option and enter additional information for the CE credit.  

The course developer’s technical assistance email address ( training@geosyntec.com ) is available at the end of the course if you need help or to report other technical issues.  

For more information, contact the CRC’s Industry Affairs Manager, Craig Riddle, at criddle@calrice.org or (916) 812-3468.

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Rice Water Quality Programs Monitoring Update
Water Quality •

Rice Water Quality Programs Monitoring Update

Monitoring for 2025 is halfway complete.

The 2025 surface water monitoring under the RPP and WDR programs is ongoing.

For the Rice Pesticide Program (RPP), there have been a handful of detections in late May, none of which were above the agricultural drain performance goal.  The latest results from early June were non-detectable.  

The Rice Waste Discharge Requirements (WDR) surface water program is in an assessment year, which means additional sampling for pesticides and toxicity.

Pyrethroids used in rice have been reported in association with water toxicity at the upper Colusa Basin Drain this year for multiple events.  The California Rice Commission (CRC) sent out letters earlier this year requesting the use reporting information (to be submitted in the fall) for pyrethroid users in the area.  Algal water toxicity was reported in the Sacramento Slough near Karnak as well.  

The CRC continues to work on behalf of the industry to conduct required monitoring and interface in reporting with the Water Board.  Additional efforts are underway to assess and analyze water quality trends across the valley and gather information from industry on uses and operational patterns.

We appreciate the industry’s support of the regulatory programs and their good stewardship of the commercial products used and protection of the environment.

For more information, contact the CRC’s Industry Affairs Manager Craig Riddle at criddle@calrice.org.