* Chemical by-products in tap water are increasing the risk of birth defects and pregnant women
* Women who lived in areas with high concentrations of trihalomethanes in drinking water had a 22% greater risk of having a baby with a birth defect when compared with women in areas with lower concentrations.
* Heart problems were the most likely defect.
* Professor Phillip Weinstein, from UWA’s school o population health, said developing foetus was very sensitive to environmental toxins.
* He said more study was needed and if the extra research supported the group’s findings, pregnant women in some suburbs may need to be advised to drink only bottled or filtered water.
* Perth tap water may pose risk to unborn babies
* University researchers warned after finding elevated nitrate levels
* Called term pre-labour rupture of membranes (PROM), the condition occurs when pregnancy has reached full turn. It can effect up to 10% of pregnancies and now can be dangerous because without protective membranes the baby can be exposed to infection.
* High nitrate levels include Neerabup, Two Rocks, Whitfords, Yanchep, Mt Hawthorn and Greenmount.
