> 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/intro/chapter-1/1.3-water-quality-characteristics.md).

# 1.3 Water quality characteristics

- [1.3.1 Introduction](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/intro/chapter-1/1.3-water-quality-characteristics/1.3.1-introduction.md)
- [1.3.2 Health-based targets](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/intro/chapter-1/1.3-water-quality-characteristics/1.3.2-guideline-values.md)
- [1.3.3 Microbial health-based targets](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/intro/chapter-1/1.3-water-quality-characteristics/1.3.3-microbial-health-based-targets.md)
- [1.3.4 Physical and chemical guideline values](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/intro/chapter-1/1.3-water-quality-characteristics/1.3.4-physical-and-chemical-guideline-values.md)
- [1.3.5 Radiological screening and reference values](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/intro/chapter-1/1.3-water-quality-characteristics/1.3.5-radiological-screening-and-reference-values.md)