It’s bad - but not all bad!​

 

Analysis of over 200 samples has generated more than 1,500 analyses and data points and provided a profile of water quality along the river from source to Brompton.  Overall results indicate that higher reaches of the river generally have good water quality but urban stretches show an increase in pollution indicators, both chemical and microbiological. 

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The results indicate that many samples are within bathing water status but spikes in pollution do occur at times. Some locations are more polluted than others but the analysis we have conducted suggest it is possible to trace the sources of pollution so these can be addressed and rectified.

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Effluent released into the river from storm overflows and treatment plants has high levels of phosphate, ammonia and coliform bacteria including potential pathogens and indicates that there is no alleviating treatment applied. Dilution will occur in the river, but locations downstream show high levels and poor water quality. 

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Some indications suggest pollution from occasional agricultural discharges are also a hazard to the river including antibiotic resistant bacteria and some high levels of phosphate. The river has some stretches with promise for bathing water status but others with potentially hazardous content. Issues with infrastructure of the sewage system and agricultural practices both contribute to the river and require attention to ensure its long-term health.