The Environment Court has released an interim decision after years of clashes, followed by appeals, over Bay of Plenty Regional Council's Plan Change 10.

Judge David Kirkpatrick has ruled in favour of a "sector range approach" to managing nitrogen going into Lake Rotorua from nearby properties, as opposed to a "Land Use Capability approach" favoured by the Rotorua Lakes Council, Central North Island Iwi Land Management Ltd and multiple forestry companies.

Nutrients such as nitrogen and phosphorus can come from animal waste, fertiliser use, geothermal activity, erosion, stormwater run-off, and sewerage leaks in the Lake Rotorua catchment, and decrease water

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