FSMA Water Testing Labs

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Water Testing

Water testing can be tricky. The fact sheets below provide instruction on taking a proper water sample, and how to read and understand your water test results.


Water Testing Log

Calculate GMs and STVs:

University of Arizona Online Water Calculator

Water Systems Inspections

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The Produce Safety Rule requires that farms inspect their agricultural water systems at least once a year. This video covers the ins and outs on how to conduct a proper evaluation.


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The video above and the following fact sheets offer a number of food safety considerations when irrigating your crops.

Funding for this website was made possible in part by the Food and Drug Administration through grant PAR-16-137. The views expressed in the posted materials do not necessarily reflect the official policies of the Department of Health and Human Services, nor does any mention of trade names, commercial practices or organization imply endorsement by the United States Government.