not treated as a pollutant but NZ runs a 'consenting' regime and one of them is to do with the power station (huntley) on one of the main rivers (the waikato) -

not treated as a pollutant but NZ runs a 'consenting' regime and one of them is to do with the power station (huntley) on one of the main rivers (the waikato) - it is only allowed to operate so as to maintain a temperature window on the river. this is complicated by the fact that the river flowrate (hence volume) is bounded by a consent with a different company that operates the hydroelectric system...