Caption:The multimillion dollar cost of an upgraded Mangawhai wastewater scheme could be significant for the Kaipara District Council. About 23,000 people lived in the district in 2018Photo credit:Flickr user Sids1 / CC BY 2.0Kaipara District Council infrastructure general manager Anin NamaLocal Democracy Reporting/ Susan BottingRapid growth is challenging Mangawhai’s wastewater infrastructure.Local Democracy Reporting/ Northern AdvocateMangawhai’s future wastewater scheme upgrade was outlined to Kaipara District Council on 5 April by wastewater irrigation specialist Peter Gearing (standing) and council infrastructure leader Anin Nama (top row, centre).Local Democracy Reporting/ Susan Botting