As many water supply companies strive to provide users with high standards of drinking water, they are unwilling to take responsibility for the harm caused by the introduction of substances that affect water quality into their water supply systems. Therefore, many water supply companies are committed to producing a commercial product to filter out harmful Substances enter drinking water. To this end, Australia and New Zealand have recently released a new standard on exposure to drinking water products and guidelines to help understand and apply the standard.

The test contents are: odor and taste test; microbial growth test; cytotoxin test; water appearance test; heavy gold element test.