2. Keep watch
A Riverwatch water monitoring program will help us measure changes in water quality over time, protect existing swimming spots, open new swimming sites and understand what makes water quality change over time.
The Riverwatch Program is assessing the microbial and chemical contaminants in the water and sediment at each of the five highest priority proposed swimming sites. The combined monitoring will inform what sort of activities will be possible at each site, such as swimming and boating, and under what conditions.
Agree and progress the establishment of the Riverwatch monitoring program for the Parramatta River.
Number of swim sites being monitored – existing, priority, future swim sites.
|Status||Swimming Site||Manager||Water Quality Monitoring||Results of monitoring|
|Existing||Cabarita Park beach||City of Canada Bay||Beachwatch||Grading Good*|
|Existing||Chiswick Baths||City of Canada Bay||Beachwatch||Grading Good*|
|Existing||Dawn Fraser Baths||Inner West Council||Beachwatch||Grading Good*|
|Existing||Lake Parramatta||Parramatta Council||Parramatta Council||Advisory|
|Priority for activation||Bayview Park||City of Canada Bay||Sydney Water||TBA – Not enough data collected to determine suitability.
View Bayview Park Water Quality Results.
|Priority for activation||McIlwaine Park||City of Canada Bay||Sydney Water||TBA – Not enough data collected to determine suitability.
View McIlwaine Park Water Quality Results.
|Priority for activation||Putney Park||City of Ryde||Sydney Water||TBA – Not enough data collected to determine suitability.
View Putney Park Water Quality Results.
|Future site||Callan Park||Inner West Council||Beachwatch||TBA – Not enough data collected to determine suitability.|
*TBA – To be advised. Not enough water quality data has been collected (before December 2020) and assessed in conjunction with sanitary inspections to develop a suitability grade. Raw data for each of these sites is available on request.
Beachwatch publishes an annual NSW State of the Beaches Report. This report rates each monitored location from Very Good, Good, Fair, Poor and Very Poor. All three existing sites monitored by Beachwatch are rated good and this has not changed in recent years. They define good as ‘Location has generally good microbial water quality and water is considered suitable for swimming most of the time. Swimming should be avoided during and for up to one day following heavy rain at ocean beaches and up to three days at estuarine sites’.
Assessing recreational water quality in the Parramatta River is an important step in delivering the Parramatta River Masterplan. The Riverwatch microbial monitoring program assesses how microbial contaminants impact water quality in the Parramatta River. Along with the Riverwatch chemical assessment program, it helps inform decisions about proposed swimming sites along the river.
|Microbial monitoring||Sanitary (site) inspection||Chemical assessment||Site safety risk assessment|
|Putney Park||Ongoing||Completed||Not started||Not started|
|McIlwaine Park||Ongoing||Completed||Not started||Not started|
|Bayview Park||Ongoing||Completed||Not started||Not started|
|Callan Park (additional site)||Ongoing||Completed||In Progress||Not started|
Microbial Monitoring Program
The Microbial Monitoring Program follows the National Health and Medical Research Council’s Guidelines for Managing Risks in Recreational Waters. It is aligned with similar recreational water quality monitoring programs such as Beachwatch, to maintain a consistent approach across Sydney.
We undertake routine, regular monitoring of the sites and also targeted sampling, for example, after rainfall, to determine the individual site’s recovery time. We measure a number of parameters but, most importantly for swimming, we are looking at enterococci. These bacteria are excreted in faeces and are rarely present in unpolluted waters. Enterococci have shown a clear dose-response relationship to disease in humans.
Chemical Assessment Program
Previous sediment and water quality monitoring within the river and a review of historic land uses near proposed swimming sites helps us to identify potential chemical contaminants of concern for recreational water users. These include heavy metals, dioxins, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), surfactants and pesticides.
The Riverwatch chemical assessment program evaluates how chemical contaminants impact river sediment and water quality in the Parramatta River. EnRisk is working with experts at Sydney Water, NSW Health, the Environment Protection Authority, Department of Planning Industry & Environment and councils to develop the framework for the chemical assessment program.
The team is applying enHealth’s Environmental Health Risk Assessment: Guidelines for assessing human health risks from environmental hazards to identify chemical contaminants of concern, understand toxicity and develop an exposure assessment for recreational water activities. This information will advise the sampling program and help us to understand any potential risks that may arise from future recreation activities along the River.
The Parramatta River Conceptual Model is a simplified representation of the real world which captures and integrates relevant scientific and other knowledge into a visual form to simplify communication between a variety of people. The conceptual model is divided into dry weather and wet weather that are the two dominant states which affect water quality in the Parramatta River. The round, break-out images relate to the main picture and highlight the key areas that affect water quality and swimmability in the Parramatta River.
|October – December 2020
|July – September 2020
|April – June 2020
|January – March 2020
|October 2019 – December 2019
|July 2019 – September 2019
|April 2019 – June 2019