Christchurch City Council

Case study for students: Meeting demand for drinking water.
Water source Surface water and groundwater
Ability to manage supply to meet demand Adequate
Forecasting future demand Forecasting is limited by incomplete data, especially on water use, but the council is developing a demand-forecasting model.
The existing supply is sufficient to meet projected demand until about 2051.
Planning to meet future demand Planning is satisfactory and improving.
Supply strategies include investment in new or upgraded infrastructure. The council has just begun a leak-detection programme.
Demand strategies are limited to universal water metering (but with charges only for commercial and industrial consumers) and education. The council has adopted a new water-supply strategy for 2009–39, which includes more tools for managing demand.
Quality of drinking water Grades B and D for Christchurch City in 2010, and E for Banks Peninsula.
Compliance with 2007 standards in Banks Peninsula requires upgraded infrastructure.

Water-quality grades: A = completely satisfactory, B = satisfactory, C = marginally satisfactory, D = unsatisfactory, E = unacceptable