Over a third of the Wellington Region is native forest or scrubland and agriculture occupies approximately half of the land area, which is made up mainly of sheep and beef farming. Dairying is undertaken in about five percent of the region, and forestry covers eight percent.
Pressures on river and stream water quality in the Wellington region range from specific discharges (mainly town and city wastewater), as well as impacts from intensive land use and urban storm water runoff. In some areas, water taken for drinking or economic activity worsens these impacts.
Overall, water quality in the region is highest at sites located on cool wet, hill-fed river and stream locations. It is generally poorer in lower parts of rivers under native forest cover and poorer again at sites located in farming areas, especially at some sites that drain from dairy farms. Water quality is however at its worst at sites that urban areas drain into.
This dashboard shows information on the data collected by the regional councils for water quality indicators, analysed as
The state for the region is represented by theconcentration for the across all sites within the region and then compares that value to the for all monitored sites in New Zealand.
Click on the parameters state icons to compare this region with others nationally.
State shows how theof samples from this site compares to other sites
Trend shows how the quality of water is changing over time. Depending on the sampling history duration, five and ten year timescales are available:
The Cawthron Institute has worked alongside regional councils to verify the processes and methods used for data collection, laboratory analysis of samples collected and the statistical analysis and interpretation of the results presented.
If all Cawthron ticks are green, then you can trust this data. However, if one or more ticks are orange, then conclusions should be treated with some caution.
For more details on each tick, see our 'Can I Trust This Data?' Factsheet.
All samples were collected using approved field protocols and have been analysed in accredited laboratories. Therefore the data shown here has been collected and analysed following best practice.
All samples were collected using approved field protocols and have been analysed in accredited laboratories.
This data is not flow adjusted. National guidelines suggest that flow-sensitive variables are flow 'adjusted' before trend analysis. Therefore, any trends shown here may be affected by variations in flow across sampling occasions.
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