Roofs contributing to tank water lead levels: study
Up to one fifth of rainwater tanks could have lead levels above drinking water guidelines, an Australian researcher has found.
But he says unless you live in a town that has a lot of heavy industry, the main sources of this lead are likely to be your rooftop, rather than the atmosphere.
“I don’t want people to be alarmed because most of the time the water quality is good,” he said, reporting findings from the study in Water Research.
Mr Huston says apart from chemical contamination, the other concern about rainwater has been microbial contamination from animal faeces.
But he says a large epidemiological study in South Australia found no evidence of increased gastroenteritis among rural children who rely on rainwater, as compared with urban children who drink treated water.