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Water Quality

BLUE GREEN ALGAE monitoring

Blue-green algae (BGA) is proactively monitored at key locations within our water supply system.

Our monitoring program has been developed in accordance with the contingency strategy developed by the Murrumbidgee Regional Algal Coordinating Committee (RACC) - a body established by the NSW Government, and we use the guidelines developed by the NSW Department of Primary Industries to provide information on water use suitability for our customers.

Samples are collected weekly and results are updated in the table below when they are received. If results indicate that water is not suitable for stock watering or domestic use (human contact) a 'Stock Alert' or 'Domestic Alert' is issued and all customers downstream of the detection points are notified via SMS or phone. Customers will also be notified when the alert is lifted. You can assist us by registering your mobile on MI’s ‘Quick Contacts List’ by choosing this option from the ‘Customers’ drop down list on the front page of our website. 

BGA results for monitoring points are an indication of BGA levels only, since BGA levels can change significantly over short periods of time, particularly when temperatures increase and water movement is minimal. 

Customers are advised to obtain independent advice for the fitness of their water for its intended use. 

Please note, that regardless of the presence of blue green algae, water supplied is not fit for human consumption.

For general information about blue-green algae, the NSW Department of Primary Industries publish resources on their website www.dpi.nsw.gov.au 

BLUE GREEN ALGAE TEST RESULTS


Monitoring Points  Stock    Recreational
(Domestic Use)

Sample date 
Barren Box Active Cell No alert Amber Alert  06/02/2017
Barren Box Intermediate Cell Stock Alert Red Alert 06/02/2017
Wah Wah Main (Barden's Regulator) No Alert No Alert 06/02/2017 
Outfall Channel *


Channel 18 - Cameron Rd
No Alert
No Alert
07/02/2017
Channel 1 - Cameron Rd
No Alert
No Alert
07/02/2017 
Corynnia Channel - Cameron Rd
No Alert
No Alert 07/02/2017
WWM - Merrondale Land
No Alert
Amber Alert 07/02/2017
Bray's Storage
No Alert
No Alert
16/01/2017
Narrandera Regulator
No Alert
No Alert
30/01/2017
Sturt
No Alert
No Alert
30/01/2017
South Lake Wyangan
Stock Alert
Red Alert 16/01/2017
**Cudgel Channel (not routine) No Alert No Alert 06/02/2017

* The Outfall Channel supply 6/2/2017 via Wah Wah Main - test results showed no alert levels, the BGA Red Alert from 1/2/2017 remains in place until two consecutive low results are recorded.

**Samples were collected from the Cudgel Channel due to visual indications of BGA. Algae test results on 6/2/2017 show extremely low levels of blue green algae. The samples identified a general algae that does not produce toxins.


STOCK ALERT 

Blue green algae results may not be suitable for stock watering. Customers downstream of the detection point will be notified of this 'Stock Alert' via SMS or phone. 

RED ALERT - RECREATIONAL (DOMESTIC)  

Blue green algae levels may not be suitable for recreational use, farm domestic use is not advised. Customers downstream of the detection point will be notified of a 'Domestic Alert' via SMS or phone. 

AMBER ALERT - RECREATIONAL  (DOMESTIC) 

Blue-green algae may be multiplying in numbers. This Alert does not restrict domestic or stock water use.

GREEN ALERT -RECREATIONAL (DOMESTIC) 

Blue green algae are first detected in the water. This Alert does not restrict domestic or stock water use.

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