> 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/part-4.md).

# Part 4: Information sheets

- [1. Disinfection](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection.md)
- [1.1: Introduction to water treatment](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.1-introduction-to-water-treatment.md)
- [1.2: Overview of disinfection](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.2-overview-of-disinfection.md)
- [1.3: Disinfection with chlorine](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.3-disinfection-with-chlorine.md)
- [1.4: Chloramines](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.4-chloramines.md)
- [1.5: Disinfection with chlorine dioxide](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.5-disinfection-with-chlorine-dioxide.md)
- [1.6: Disinfection with ozone](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.6-disinfection-with-ozone.md)
- [1.7: Disinfection with ultraviolet light](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.7-disinfection-with-ultraviolet-light.md)
- [1.8: Other disinfectants](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/disinfection/1.8-other-disinfectants.md)
- [2. Sampling](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/sampling.md)
- [2.1: Sampling Information – handling requirements and preservation](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/sampling/2.1-sampling-information-handling-requirements-and-preservation.md)
- [2.2: Radiological monitoring and assessment of performance (updated 2022)](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/sampling/2.2-radiological-monitoring-and-assessment-of-performance.md)
- [3. Statistics](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics.md)
- [3.1: Statistics – Visualising data](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.1-statistics-visualising-data.md)
- [3.2: Statistics – Assessing data](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.2-statistics-assessing-performance.md)
- [3.3: Statistics – Statistical principles](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.3-statistics-statistical-principles.md)
- [3.4: Statistics – Control charts and trends](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.4-statistics-control-charts-and-trends.md)
- [3.5: Number of samples required](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.5-number-of-samples-required.md)
- [3.6: Guidance for issuing and lifting boil water advisories](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/3.6-guidance-for-issuing-and-lifting-boil-water-advisories.md)
- [Attachments](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/statistics/attachments.md)
- [4. Leaching](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/4.-leaching.md)
- [4.1: Metal and metalloid chemicals leaching from plumbing products](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-4/4.-leaching/4.1-metal-and-metalloid-chemicals-leaching-from-plumbing-products.md): (endorsed 2025)