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