Huge cleanup project underway at Lake Horowhenua

For decades, raw sewage was pumped into Lake Horowhenua, earning it the dubious reputation as one of New Zealand's most polluted waterways. Now, a huge cleanup project is underway to try and restore it back to health. But could the fetid lake two kilometres west of Levin ever be safe to swim in again? For the past five summers a special harvester has operated in the lake, chopping out invasive weeds to try and give native species to the chance to flourish and replenish the oxygen-deprived water. Jimmy Ellingham reports.