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UC Food Safety
University of California
UC Food Safety

UC Food Safety Home

Research and Extension faculty at UC Davis, Drs. Linda Harris and Trevor Suslow, welcome you to the University of California Food Safety website. Link to presentations, publications, and websites related to the production, harvest and processing of foods. The emphasis is microbial food safety but food biotechnology, food quality, and food security are also addressed.

Newly Added to Website - February 2016

Agricultural Water

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: 

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

Here are three tools:

Added December 2015

Food safety information for nuts and nut products - all updated 12-08-15

Added November 2015


UC Food Blog

chickens Got chickens? Backyard poultry workshop offered in Oakland March 12
Posted 2/12/2016 - For tips on raising healthy chickens in your backyard, attend the Backyard Poultry Workshop in Oakland on Saturday, March 12. Poultry experts will share valuable information for experienced poultry owners and for those just getting started. The workshop...

The Four Little PIGS (Pork in Green Sauce) drew applause as the winners of the 2016 Solano County 4-H Chili Contest. From left are Spencer Merodio, Alexis Taliaferro, Natalie Frenkel and Kate Frenkel, all of the Suisun Valley 4-H Club. (Photo by Kathy Keatley Garvey) 'Four Little Pigs' blow the house down with a super bowl of chili
Posted 2/3/2016 - Their first time proved to be the charm — just as Super (souper) Bowl Sunday beckons.Using a grandmother's favorite recipe and all locally grown ingredients, the Four Little PIGS (Pork in Green Sauce) from the Suisun Valley 4-H Club swept the...

Site Creation date 6/1/2009
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