> 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-5/microorganisms.md).

# Microorganisms

- [Microbial indicators](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators.md)
- [Bacteroides](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/bacteroides.md): (endorsed 2011)
- [Coliphages](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/coliphages.md): (endorsed 2011)
- [Clostridium perfringens](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/clostridium-perfringens.md): (endorsed 2011)
- [Escherichia coli](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/escherichia-coli.md): (endorsed 2011)
- [Heterotrophic plate counts](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/heterotrophic-plate-counts.md): (endorsed 2011)
- [Intestinal enterococci](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/intestinal-enterococci.md): (endorsed 2011)
- [Thermotolerant coliforms](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/thermotolerant-coliforms.md): (endorsed 2011)
- [Total coliforms](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/microbial-indicators/total-coliforms.md): (endorsed 2011)
- [Bacteria](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria.md)
- [Aeromonas](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/aeromonas.md): (endorsed 1996)
- [Burkholderia pseudomallei](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/burkholderia-pseudomallei.md): (endorsed 2001)
- [Campylobacter](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/campylobacter.md): (endorsed 1996)
- [Escherichia coli (E. coli) (pathogenic)](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/escherichia-coli-e.-coli-pathogenic.md): (endorsed 2011)
- [Helicobacter pylori](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/helicobacter-pylori.md): (endorsed 2011)
- [Klebsiella](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/klebsiella.md): (endorsed 1996)
- [Legionella](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/legionella.md): (endorsed 1996)
- [Mycobacterium](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/mycobacterium.md): (endorsed 2011)
- [Pseudomonas aeruginosa](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/pseudomonas-aeruginosa.md): (endorsed 1996)
- [Salmonella](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/salmonella.md): (endorsed 1996)
- [Shigella](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/shigella.md): (endorsed 1996)
- [Vibrio](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/vibrio.md): (endorsed 1996)
- [Yersinia](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/bacteria/yersinia.md): (endorsed 1996)
- [Protozoa](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa.md)
- [Acanthamoeba](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/acanthamoeba.md): (endorsed 1996)
- [Blastocystis](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/blastocystis.md): (endorsed 2011)
- [Cryptosporidium](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/cryptosporidium.md): (endorsed 2011)
- [Cyclospora](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/cyclospora.md): (endorsed 2011)
- [Giardia](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/giardia.md): (endorsed 2011)
- [Naegleria fowleri](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/protozoa/naegleria-fowleri.md): (endorsed 1996)
- [Cyanobacteria and their toxins](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins.md)
- [Cyanobacteria and their toxins](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins/cyanobacteria-and-their-toxins.md): (endorsed 2011)
- [Cylindrospermopsin](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins/cylindrospermopsin.md): (endorsed 2011)
- [Microcystins](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins/microcystins.md): (endorsed 2011)
- [Nodularin](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins/nodularin.md): (endorsed 2011)
- [Saxitoxins](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/cyanobacteria-and-their-toxins/saxitoxins.md): (endorsed 2011)
- [Viruses](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses.md)
- [Adenovirus](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses/adenovirus.md): (endorsed 2011)
- [Enterovirus](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses/enterovirus.md): (endorsed 2011)
- [Hepatitis viruses](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses/hepatitis-viruses.md): (endorsed 2011)
- [Norovirus](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses/norovirus.md): (endorsed 2011)
- [Rotavirus](https://guidelines.nhmrc.gov.au/australian-drinking-water-guidelines/part-5/microorganisms/viruses/rotavirus.md): (endorsed 2011)