TCDC has agreed to provide Hahei Residents and Ratepayers Association with water quality test results from the Wigmore Estuary on a regular basis.
Here is a copy of the agreement, HRRA TCDC Water Testing MOU
The results of these tests are shown below.
All levels are reported as cfu/100 ml
To set these results in perspective, the Ministry of Environment provides guidelines for Recreational Fresh Water. These guidelines state that the maximum levels for E Coli is 550 /100ml and Entrococci is 280/100ml. As you can see, the water quality in the Wigmore frequently exceeds the maximum level. High levels normally occur during and after rainfall when storm water washes organic material into the stream.
Our recommendation is to avoid swimming in the Wigmore Stream, particularly when it is raining and for a day or so afterwards
For detailed information on guidelines for recreational water quality in Seawater and Fresh Water, see NZ Ministry of Environment Guidelines here. Microbiological Quality Jun03. Go to table E2 in this publication. See below