Many Australian households rely on rainwater tanks to cut water use, but a recent study suggests this practice may come with hidden risks. Researchers found that water stored in these tanks can harbor bacteria and metals that are potentially harmful to human health.
The findings point to a need for closer monitoring of rainwater quality, especially in homes where tank water is used for drinking or cooking. While the study does not quantify the level of risk, it raises questions about current treatment and filtration practices.
As rainwater harvesting grows in popularity, the authors recommend that users test their tanks regularly and consider appropriate treatment options. The research adds to a growing body of evidence on the safety of alternative water sources.