Lead can be present in drinking water either because of dissolution from natural sources, or from any lead from your household plumbing systems (such as in pipes or solder used to seal joints). South Australia’s tap waters are consistently lower than the national health limit of 0.01 milligrams per litre. The amount of any lead in water depends on factors including pH, water hardness and standing time. Exceedance of acceptable lead levels are rare in South Australia, however if you are concerned or would like further information, SA Health provide advice about reducing lead in your home and in turn, your drinking water.