Streamwatch is an educational and capacity-building program that utilises the passion of community groups to monitor the quality and health of local watercourses across the greater Sydney and Blue Mountains and Illawarra regions.

This dataset includes physical and chemical parameters collected during the period from 1990 to 2020. Environmental monitoring data was collected monthly by trained volunteers during this period.

The Streamwatch program was originally funded and managed by Sydney Water, transferred to the Australian Museum in 2012 and then to Greater Sydney Landcare Network (GSLN) in 2019.

Streamwatch water quality data methodologies align with the national Waterwatch program and GSLN understands the importance of making this data publicly available for future use.