Lake Horowhenua in top 10 most polluted NZ Lakes

Our reporter Karley Hemopo heads to Lake Horowhenua to put a spotlight on property rights in a long standing dispute -- so why is Māori freehold land being treated like Public land in the eyes of local authorities? In the meantime the lake is in the top 10 polluted lakes list in NZ so what is being done to address or reverse the significant pollution in the lake?