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Gisborne District Council is being advised to investigate using wetlands to further treat the city’s wastewater, rather than build a second biological trickling filter (BTF) treatment plant at a cost of about $40 million. The cost of developing wetlands complexes is yet to be determined, but GDC engineering and works manager Peter Higgs says it would be significantly less than $40m. What do you think the council should do?

See also:

Wetland could save millions
Wetlands proposal a win-win solution to wastewater treatment issues

Investigate the wetlands concept
Build a second BTF plant
Do neither, continue to use outfall pipe into the bay
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