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Water test results
Water and Macroinvertebrate testing is carried out across 27 locations across the Coomera and Nerang River Catchment. These tests help ascertain the health of the river system.
Read more about the Coomera River Catchment Association’s testing and the history behind it here.

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October 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone, Please find attached results of our Water Quality Monitoring results for October 2025. Overall, the results were within the normal range, with comments as follows: pH varies a little between fresh and saltwater; saltwater is generally higher in pH being slightly alkaline, whilst freshwater can tend to be a little more acidic, bearing in mind that a pH of 7 is neutral Water temperature does vary a little along the Coomera River; in the month of October the higher
Alison Loxton
6 days ago1 min read
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September 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone I trust you are all well. Attached are the Water Quality Monitoring results for the month of September, 2025. The following is commentary on the results and their interpretation: The pH of most of the streams was less than the neutral reading of 7; normally lower pH is often an indicator of poor water flow and possible pollution. As the phosphate and ammonia nitrate levels were generally within the normal range, it could possibly be some other form of pollution ou
Alison Loxton
Nov 22 min read
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August 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone I trust you are all keeping safe and well. Currently we have had little rain (a more traditional spring than the last few...
Alison Loxton
Sep 302 min read
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July 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Attached are the results of our WQM efforts for the month of July, 2025. Many thanks to young Helen and Ross and Brian for...
Alison Loxton
Sep 21 min read
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June 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Please find attached the WQM results for the month of June 2025. June was saltwater sampling month, plus Waterhen Lake. the...
Alison Loxton
Jul 282 min read
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May 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Please find attached the results of WQM and Chemical Analyses for the month of May, 2025. In interpreting the results, please...
Alison Loxton
Jun 242 min read
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April 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Please find attached the sampling results for April, 2025. Apologies for the late publishing of results however it has been a...
Alison Loxton
Jun 22 min read
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March 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone, I trust this email finds you safe, happy and well. Attached are the results of WQM for March, 2025. The results are a little...
Alison Loxton
May 111 min read
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February 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone I trust everyone is OK following TC Alfred and the more damaging rainfall and erosion which accompanied it. Many homes were...
Alison Loxton
Apr 32 min read
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January 2025: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone, Welcome to the report for Water Quality Monitoring for January 2025. The first thing you will notice is the variation in...
Alison Loxton
Feb 252 min read
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December 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone, Please find attached the results of our Water Quality Monitoring Program for December, 2024. I thank Helen and Ross and...
Alison Loxton
Jan 292 min read
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Water Quality Monitoring Results July - November 2024 - Monthly Comparison
Our committee member Chris Horacek has kindly created graphs to illustrate the water quality monitoring results in a month to month...
Alison Loxton
Jan 191 min read
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November 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone, Please find attached the sampling results for November, 2024. The results are certainly a mixed bag, due primarily to...
Alison Loxton
Dec 31, 20242 min read
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October 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Please find attached results of sampling for October, 2024. Overall the results indicate that the waterways are somewhat...
Alison Loxton
Nov 30, 20241 min read
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September 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi to our valued volunteers Please find attached the results of Water quality monitoring along the freshwater reaches of our catchment...
Alison Loxton
Oct 28, 20242 min read
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August 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone I trust this email finds you well, mentally as well as physically. The results for August are attached, with the following...
Alison Loxton
Sep 27, 20242 min read
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July 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone Please find attached the Water Quality Monitoring results and Chemical Analyses for our waterways for July, 2024. Recently...
Alison Loxton
Sep 2, 20241 min read
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June 2024: Chemical, Water Quality and Macroinvertebrate Analysis
Hi everyone I trust you are well and enjoying the wonderful winter sunshine; we could be in worse places. Where else can you wear...
Alison Loxton
Jul 29, 20242 min read
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May 2024: Chemical, Water Quality and Macroinvertebrate analysis
Hi everyone Please find attached the results for Water Quality Monitoring and Chemical Analysis for the freshwater sites for the month of...
Alison Loxton
Jul 5, 20242 min read
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April 2024: Chemical, Water Quality and Macroinvertebrate analysis
Hi everyone Please find attached the results of sampling for the month of April, 2024. The weather experienced whilst sampling was not...
Alison Loxton
May 27, 20242 min read
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