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Archived water quality assessments

Water quality at Moana beach is assessed as being in good, moderate or poor condition by interpreting water chemistry and algal data. >> More

Water quality classification for October 2005 to March 2006

Indicator	Ecosystem	Recreation	Aquaculture
Ammonia	Good	NA	Good
Oxidised Nitrogen	Good	NA	NA
Total Nitrogen	Good	NA	NA
Total Phosphorus	Good	NA	NA
Turbidity	Good	Good	NA
Chlorophyll (a)	Moderate	NA	NA
Heavy Metals	Poor	NA	Poor
Bacteria	NA	Good	NA

Notes NA = not applicable

Chlorophyll (a), an indicator of algae, is usually classified as moderate at Moana Beach. This is probably due to the effect of fertilisers or animal wastes being washed off rural land during storms and runoff from roads.

Heavy metals were classified as poor due to on every high concentration of zinc in February. Heavy metals are likely to be due to urban runoff containing heavy metals washed off roads and galvanised iron roofs. Previously heavy metal have been classified as good.

Water quality classification for April to September 2005

Indicator	Ecosystem	Recreation	Aquaculture
Ammonia	Good	NA	Good
Oxidised Nitrogen	Good	NA	NA
Total Nitrogen	Good	NA	NA
Total Phosphorus	Good	NA	NA
Turbidity	Good	Good	NA
Chlorophyll (a)	Good	NA	NA
Heavy Metals	Poor	NA	Poor
Bacteria	NA	Good	NA

Notes NA = not applicable

Heavy metals were classified as poor, which is most likely due to urban runoff containing heavy metals washed off roads and galvanised iron roofs.

This page was last modified 31-07-2007