Ag Water for Pc

1. The Produce Safety Rule (PSR) requires growers to initially establish a Microbial Water Quality Profile (MWQP) for each untreated surface agricultural water source used during growing activities of covered produce (other than sprouts).

2. The initial MWQP must be established with a minimum of 20 water samples that are representative of use and collected as close to harvest as possible over a period of at least 2 to a maximum of 4 years.

3. The probability of contamination is determined using environmental data, current weather conditions, and user data input which includes water quality parameters specific to the water source in question.

4. The PSR must be applied for each water source using a direct water application method and annual surveys must be conducted for that water source in subsequent years.

5. For example, for an MWQP established with 20 samples, five new samples would be combined with the most recent 15 samples from the previous MWQP to update the MWQP and confirm that the water is still being used appropriately.

6. This feature will evaluate current environmental conditions to determine the potential for microbial contamination in a water source.

7. After the initial MWQP has been established, the GM and STV values must be updated annually based on a minimum of 5 new samples.

8. coli levels in your water source.

9. The water quality profile is based on the levels of generic E.

10. coli in your water source.

11. coli must be conducted following U.S. Environmental Protection Agency (EPA) Method 1603.

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