Snells Beach’s water treatment plant would fall foul of new rules outlined in a proposed Water Services Bill.

Watercare has confirmed that the bore water supplied to Snells Beach and Algies Bay has a a typical pH of between 8.3 and 8.4.

Draft rules prepared by incoming regulator Taumata Arowai state that larger water supplies must have a pH of below 8.0.

Chlorine, used to kill germs and parasites in drinking water, is less effective at higher pH levels.