Wanganui Chronicle - Native ecosystem trial starts

A $600,000 government grant has helped Horowhenua District Council launch a five year trial into using native plants to help treat Levin's wastewater.

Ten hectares of pine forest at the Levin wastewater treatment plant's irrigation system, located at the end of Hokio Sand Rd and known locally as 'The Pot', are to be replaced with manuka and kanuka trees.

The native trees had unique properties for filtering pollutants and helping reduce leaching of nitrogen and pathogens, according to HDC.

The trial would also see other native species, including kahikatea, pukatea, rimu, tawa and swamp maire, planted for comparison.