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The groundwater resources of the Lower Hutt Valley are an extremely
valuable water resource to the Wellington region. Currently between 25
and 35 percent of the municipal supply requirements of the greater
Wellington area are derived from this resource.

Forecast increases in demand and the imposition of higher minimum flow
requirements in the major surface water catchments in the Wellington
area will place increased pressure on this resource to cover any shorfalls
in supply.

This report proposes three groundwater quality protection zones for the
Lower Hutt Groundwater Zone to form a basis for the development of a
comprehensive groundwater quality protection strategy.