WCFS - Western Center for Food Safety

WCFS Mission Statement

The mission of the Western Center for Food Safety is to research the interface between production agriculture and food protection, identify real-world solutions to food safety challenges in these systems, and communicate new knowledge through outreach and education.

Recently Added:  February 2016

The Produce Safety Rule (PSR) requires growers to initially establish a Microbial Water Quality Profile (MWQP) for each untreated surface agricultural water source and conduct annual surveys for that water source in subsequent years. The water quality profile is based on the levels of generic E. coli in your agricultural water.

The initial MWQP must be established with a minimum of 20 water samples collected as close to harvest as possible over a period of at least 2 to a maximum of 4 years. Geometric mean (GM) and Statistical Threshold Value (STV) are calculated from these 20 samples (minimum). The GM and STV are your MWQP and should be compared to the microbial quality criteria provided in the Produce Safety Rule.

These tools were developed to make it easy to calculate the GM and STV and to determine if your water meets the standards for unrestricted application to produce before harvest. The tools were also designed to assist you with making food safety management decisions if your water does not meet the standards in the proposed rule.

More information on the Produce Safety Rule and agricultural water can be found here: www.fda.gov/Food/GuidanceRegulation/FSMA/ucm334114.htm 

Quality control of wastewater for irrigated crop production (FAO, United Nations)

Here are three tools:

January newsletter highlight...

Workshop on the Use of Soil Amendments and Microbial Food Safety Best Practices in Organic and Sustainable Agriculture

A one and a half day workshop was held at UC Davis as part of a project to gather information about the use of animal-based soil amendments, including rotational grazing of livestock and poultry, in organic and sustainable agriculture. The project is led by Alda Pires (PI), Agriculture and Natural Resources, Cooperative Extension, School of Veterinary Medicine, UC Davis, and Michele Jay-Russell (Co-PI), Western Center for Food Safety (WCFS).


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Western US Irrigation Water Conference April 24-25 Summary Report Available

Western US Irrigation Water Conference

The purpose of this summary document is to record the key points and recommendations that were discussed over the course of the conference. We hope that the information contained herein will help stimulate further conversation and consensus on effective strategies to implement the agricultural water quality standards in the Produce Safety Rule. 

Download the summary.

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