Story: Volcanic Plateau region

Lake Rotorua health warning

Lake Rotorua health warning

Concern about flushing sewage into Lake Rotorua mounted in the 1960s as the town grew rapidly. City sewage is now treated away from the lake, but runoff from farms and septic tanks continues to add soluble nutrients to the water. High nutrient levels can affect water quality and lead to growth of cyanobacteria (blue–green algae), which can cause skin irritations, upset stomachs and flu-like symptoms. Electronic signs such as this now alert the public to lake water conditions.

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How to cite this page:

Malcolm McKinnon, 'Volcanic Plateau region - The changing landscape', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/15141/lake-rotorua-health-warning (accessed 28 September 2020)

Story by Malcolm McKinnon, updated 1 May 2015