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This dataset was first added to MfE Data Service on 24 Apr 2017.
Urban stream water quality - trends - 2008–15
New Zealand's Environment Reporting Series: The Ministry for the Environment and StatsNZ
Urban water quality indicators include heavy metals, nutrients, and E.coli. The concentrations of these indicators are compared to the proportion of urban land cover in catchments.
Zinc and copper are heavy metals that can accumulate in sediments, shellfish, and other aquatic organisms. Metals can reach toxic levels in organisms making them unsafe to eat and can be toxic to aquatic life. Nitrogen and phosphorus are nutrients that can cause excessive algal growth. Ammonical nitrogen and nitrate-nitrogen can be toxic to aquatic life if concentrations in streams are high enough. E.coli is an indicator of disease-causing organisms, which may affect human health and recreational values in streams.
File contains trend analyses by site for water quality indicators in Auckland, Wellington, and Christchurch over the period 2008–15.
Auckland Council, Greater Wellington Regional Council, and Christchurch City Council
Creative Commons Attribution 4.0 New Zealand
Attribution 3.0 New Zealand
http://creativecommons.org/licenses/by/3.0/nz/
Auckland, Wellington, and Christchurch, 2008–15
https://data.mfe.govt.nz/table/53598-urban-stream-water-quality-trends-200815/
FW17/002
Dataset
New Zealand English
built environment, pollution, nutrients, watercourse, water quality