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A decision on the Queenstown Lakes District Council's application for a district-wide wastewater discharge consent is at least three months away.
A four-day public hearing on the application ended on Thursday, with final comments by applicant expert witnesses and questioning by independent commissioners.
Of 200 submissions received on the application, 197 were opposed. More than 30 submitters spoke at the hearing.
The district council has applied to the Otago Regional Council for a 35-year permit allowing the discharge of wastewater overflows from its network to freshwater-receiving environments, or on to land in circumstances where it may enter freshwater.
The commissioners heard this week the district council's investment in wastewater infrastructure between 2018 and 2028 would account for about 10% of its total planned capital expenditure.
Council general manager property and infrastructure Peter Hansby told commissioners on Thursday about 45% of the $105million of wastewater infrastructure investment was attributable to anticipated growth in resident and visitor numbers.