The Safe Drinking Water Act and National Primary Drinking Water Regulations do not contain requirements for materials in piping for domestic water. State agencies may have such requirements and some states require that such materials be approved under NSF International Standard 61 (Indirect additives) or other NSF International Standards.
I am trying to find out how materials like epoxy resins and polyetheramines for drinking water piping are regulated in the US? Are they regulated under FDA CFR 21 175.300 or a separate regulation? What are the requirements for the use of such materials in
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