Tutaritari Estuary Water Quality
The Hahei Residents & Ratepayers Association take samples from Tutaritari Estuary on a regular basis. The results of these tests are shown below.
|Date||E. Coli||Enterococci||E. Coli||Enterococci|
All levels are reported as cfu/100 ml
Over the busy summer holidays, we have taken samples from near Grange Rd to understand how Tutaritari Stream quality changes as it flows to the ocean.
Please note – the results March to May 2018 may be much higher than reported. During this period Eurofins, our analytical laboratory did not understand samples were from a stream.
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 Tutaritari Stream 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 Tutaritari 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