49Microbiological quality of aquatic facility water

49 Microbiological quality of aquatic facility water An aquatic facility operator must ensure that while the facility is in operation the microbiological standard of the water in the aquatic facility is maintained within the following parameters— (a) the heterotrophic colony count is less than 100 colony forming units per millilitre; (b) *Escherichia coli* is not detected in 100 millilitres; (c) *Pseudomonas aeruginosa* is not detected in 100 millilitres.