Sydney Water has completed a risk assessment to assess the risks to human health and aquatic organisms in creeks, rivers, estuaries and ocean waters affected by wet weather sewage overflows, stormwater and sewage treatment plant discharges. The risk assessment methodology consists of a comparison of...
I would have to say leaking showers are the single most common reason for termites in houses in Sydney. The second would have to be blocked storm-water and sewage drains which flow under houses, broken water pipes, overflows from the air-conditioner and the hot water systems....
Sewage water is not discharged to this estuary, except infrequently as overflow during high-precipitation events. The presence of acesulfame (a recognised marker of domestic wastewater) and pharmaceuticals in water from all parts of the estuary after a dry period, suggests sewage water is leaking ...