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Water Quality

Water Quality Summary

Our supply and drainage network has been receiving flows from excess rainfall received in the local and upper catchment areas. We have been monitoring the water quality of these flows at key points with our system.

A summary of these locations and results for general water quality measurements are provided in the map which can be viewed here. MI-arrow-yellow.gif Water Quality Summary 21 September 2016

These water quality results are provided for information purposes only and should be taken into consideration when assessing the purpose of your water use.


Groundwater Monitoring

All irrigation areas face risks from elevated watertables and soil salinisation. We remain diligent in our efforts to keep water tables below two metres from the surface - the point at which salinity risk increases and has the highest impact on production.

Bureau of Meteorology Water Information Program 

We are legally required to comply with the requirements of the Water Information Program operated by the Bureau of Meteorology (BoM). To find out more about the Bureau of Meteorology Water Information Program visit their website




EPA Licence

MI-arrow-yellow.gif Copy of our Environmental Protection Licence No. 4651

MI-arrow-yellow.gif MI Pollution Incident Response Management Plan 2016

Water Monitoring

As of March 2012,  EPL requires us to publish the results of  monitoring that is required as part of the licence.

MI-arrow-yellow.gif Water Quality Test Results

MI-arrow-yellow.gif Blue Green Algae Monitoring Program

9 March 2016

Location Alert 
Willow Dam Green
Barren Box Intermediate Cell No Alert
Barren Box Active Cell Not in use
South Lake Wyangan Red- closed
Mirrool Creek (McNamara Rd) No Alert
Main Drain J (McNamara Rd) No Alert
Bray's Dam No Alert
 Wah Wah Main No Alert
East Mirrool Regulator Green
Yenda Storage Green
Bypass Channel (Bringagee Rd) Green
 Narrandera Regulator No Alert
Sturt Regulator No Alert

MI-arrow-yellow.gif Map: Algae Monitoring Sites 

Alert Level Descriptions:
These alert levels represent 'bloom' conditions. The 'blooms' should be considered to be toxic to humans and animals, and the water should not be used for potable water supply, stock watering, or for recreation. Algae signs need to be erected at site.
Blue-green algae may be multiplying in numbers. The water should be considered as unsuitable for potable use. The water remains suitable for recreational use.
Blue-green algae are first detected in the water at low amounts, possibly signalling the early stages of the development of a bloom. At these concentrations, the blue-green algae do not pose a threat to recreational, stock or domestic use.


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