Kōrero: Water quality

Sources of water

Sources of water

Contaminated water that enters a river or stream from a concentrated source such as a pipe is referred to as a point source (top). Water that discharges from overland flow or subsurface seepage into streams is known as a non-point source (bottom). Contaminants from non-point discharges are more difficult to manage because they contribute small amounts from many locations, sometimes including faecal contaminants from grazing animals.

Te whakamahi i tēnei tūemi

Environment Southland
Photographs by Graeme McKenzie

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Te tuhi tohutoro mō tēnei whārangi:

Mike Scarsbrook and Kit Rutherford, 'Water quality - Water pollution', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/15520/sources-of-water (accessed 23 June 2021)

He kōrero nā Mike Scarsbrook and Kit Rutherford, i tāngia i te 24 Nov 2008, updated 18 Jul 2016