> For the complete documentation index, see [llms.txt](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/appendices/appendix-2/a2.7-materials-and-chemicals.md).

# A2.7 Materials and chemicals

AS/NZS 4020 ((Australian Standard/New Zealand Standard) (1999). Products for use in contact with drinking water. Standards Australia/Standards New Zealand.

Mosse PRL and Colwell M (2001). Chemical quality assurance — Gippsland water’s journey: getting the right chemical in the right place at the right time. Water, 28(3): 45–46.

SAA HB131 (1999). Guidelines for applying and interpreting AS/NZS 4020: Products for use in contact with drinking water. Standards Australia.