Who must perform the tests required under § 112.46 and what methods must be used?
21 C.F.R. § 112.47
in effectEffective: 2024-07-01(a) You may meet the requirements related to agricultural water testing required under § 112.46 using:
(1) Test results from your agricultural water source(s) performed by you, or by a person or entity acting on your behalf; or
(2) Data collected by a third party or parties, provided the water source(s) sampled by the third party or parties adequately represent your agricultural water source(s) and all other applicable requirements of this part are met.
(b) Agricultural water samples must be aseptically collected and tested using a method as set forth in § 112.151.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026