Water Test­ing in Our Lo­cal Creeks

Galston, Glenorie and Hills Rural News - - My Council - By Chris Noon

For 7 years the Land­care group in Gal­ston/Ar­ca­dia has now been mea­sur­ing reg­u­larly the qual­ity of the water flow­ing at 3 points in our lo­cal creeks. Here’s what we have found. • Is the water qual­ity good? Yes, most of the time. Is the qual­ity chang­ing? No de­te­ri­o­ra­tion has oc­curred dur­ing the last 7 years, but there is a lot of vari­a­tion. What causes this vari­a­tion? The big­gest fac­tor is when it rained last and how much it rained: see the photo of Still Ck wa­ter­fall in heavy rain. Just after rain phos­phates from waste water and fer­tiliser get washed through into the creeks. This is very no­tice­able up­stream nearer houses. On the other hand, salt lev­els are re­duced with rain. • What is hap­pen­ing to life in the creeks? We mea­sure dis­solved oxy­gen lev­els: 80% of up­stream and more than 90% of down­stream lev­els are within stan­dards and so able to sup­port life. • But what life is there? Re­cently we have started a bi­o­log­i­cal mea­sure count­ing wa­ter­bugs and have found mayflies, stone­flies and cad­dis­flies, a good in­di­ca­tor. How­ever, long-term res­i­dents know that the fish which used to in­habit the creeks are no longer there. Can I see the re­sults of these tests? Yes, go to http://www.still­creekland­care.com.au/our- catch­ment/wa­terqual­ity/ What can I do about re­duc­ing pol­lu­tants? A lot, just see our sug­ges­tions: http://www.still­creekland­care.com.au/ ru­ral-res­i­dents-guide/water/

If you are in­ter­ested in hav­ing chem­i­cal or phys­i­cal tests of your creek water or learn­ing how to do the tests, please con­tact us via our web­site.

Con­tacts: www.still­creekland­care.com.au or Face­book

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