FAQs and Letters
Reg 31 Letters
Occasionally the Drinking Water Inspectorate uses Reg 31 letters to communicate with the water industry, applicants and other relevant parties.
Frequently Asked Questions (FAQ)
We have provided the following answers to frequently asked questions about Regulation 31 :
FAQ1 – How do I apply for approval of my products?
FAQ2 – What claims can I make about my approved products?
FAQ3 – Can the DWI enter into a confidentiality agreement concerning product ingredients?
FAQ4 – What products can be approved for use with drinking water?
FAQ5 – How can I check whether a product is approved for use with drinking water supplies?
FAQ6 – Can I apply for approval of my process?
FAQ7 – Do products used in contact with treatment chemicals need to be approved under Regulations?
FAQ8 – Can approval be given for products used with private water supplies?
FAQ9 – Can bitumen containing products be approved for use with drinking water supplies?
FAQ10 – Can reworked or recycled materials be approved?
FAQ12 – The use of products for emergency disinfection of public water supplies
FAQ14 – Product formulation details and material safety data sheets (MSDS)
FAQ16 – How can I apply to use a product for research purposes?
FAQ17 – Can a product be approved for use solely with untreated water intended for human consumption?