A series of exposure experiments – recycled water and alternative water sources

Funded by: CRC for Water Quality and Treatment

This project will address data deficits regarding the exposure profile of users of recycled and alternative water sources in both the domestic and urban context, through the conduct of a series of four experiments. Issues to be addressed comprise:
- potential exposure to pathogens through use of recycled water for laundry purposes
- required witholding periods before public contact after irrigation of parks with Class B and C recycled water
- characterisation of aerosol exposure from conventional and high efficiency spray devices
- preliminary assessment of the endotoxin content of recycled water and potential for adverse health effects

The project will provide relevant data to enable the refinement of exposure estimates and permit more accurate health risk assessment of the implications associated with the supply of recycled and alternative water for a variety of non-potable uses. Data from the study will provide input into the design of Australian National Water Recycling Guidelines and assist water and health regulators decide on safe uses of recycled water for a variety of purposes.