Agricultural Water

Good Water Quality=Safe Water

Our comprehensive list of water related microbiological organisms will help you characterize water quality for regulatory requirements or peace of mind. We use methods approved and developed by EPA and APHA. Assure your Ag water safety or maintain regulatory compliance with our convenient and prompt water analysis. 

The FDA has once again extended the ag water compliance dates in order to have time to make adjustments they feel may be necessary to the rule. For now the requirements for ag water have been pushed back until 2022. There are currently no details on what other changes to the rule will be made. We will do our best to keep you informed as more information becomes available. For the time being growers should continue to perform any ag water testing they are currently required to do for their Global GAP or other food safety audit requiremnts.

Below is the current list of testing methods that FDA has deemed as equivalent to EPA 1603 for the purpose of testing ag water for compliance with the Produce Safety Rule. Cascade Analytical uses the methods listed at numbers 7 and 8 on this list for ag water testing. On the FDA list they are listed as the IDEXX Colilert methods. The offical method number for these methods is 9223B which is what will be listed on the report you recive from the lab with your results. This is the same method we have used for ag water testing for many years. The full list can be found by clicking on the link below.


pdf buttonFDA list of Equivalent Testing Methodologies for Agricultural Water


Helpful Links and Information

Produce Safety Alliance Website

pdf buttonGAP Water Sampling & Global GAP

pdf buttonFSMA Produce Rule Irrigation Water Requirements

Order Form for Ag Water

Global GAP Microbial Water Testing Reqirement Flow Chart

Comparison of E. Coli Testing Methods part 1

Comparison of E. Coli Testing Methods part 2

Western Center fof Food Safety Website

UC Davis Ag Water Excel Tool

University of Arizona Ag Water App


Washington State Tree Fruit Association Hand Washing Videos



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