Annual Report 2010 - Christchurch City Council

Water supply
Council activities and
services
Annual Report
Christchurch Otautahi
2010
p111.
Council activities and services
Water supply
How did we measure up?
Activity Level of service Actual Target
Water conservation
The amount of water abstracted
each year for the public water
supply is quantified and
monitored, with a view to
reducing consumption
72.1%
See trend graph following
≤ 71% (+/–10%) of total cap of
75M m3 potable water abstracted
per year
358 m 3 per property per annum ≤ 355 m3 +/–10% water abstracted
per property served per year
The water supply network is
inspected for leaks
The public awareness of water
conservation
17.2% of water mains network
surveyed for leaks
61%
The effectiveness of the
Waterwise campaign is currently
being reviewed
≥ 12.5% of the water supply
network is inspected for leaks
each year
≥ 70% public awareness / year
Council runs water conservation
campaigns
Campaign completed on time The Waterwise campaign is run
between October and February
each year
Water supply
Continuous potable water is
supplied to all customers
11.9 1 2 3
We have experienced more pipe
bursts than in previous years.
Investigations are underway to
identify reasons for this with a
view to address in the next LTCCP
≤ 9 unplanned interruptions per
year / 1,000 properties served
0.74, being 39 shutdowns during
the year. 1 4
≤ 1 unplanned interruption of ≥4
hours on average per week each
year
98% 5 6 ≥ 95% serious leaks (in
urban areas) have a Council
representative on site to assess
and confirm repair options within
one hour of being reported to
Council
96.5% 5 6 ≥ 95% serious leaks (in
rural areas) have a Council
representative on site to assess
and confirm repair options within
two hours of being reported to
Council
98.3% ≥95% medium leaks (in urban
and rural areas) are repaired
within one working day of being
reported to Council
1 Only urban areas included in this measure. Excludes results from
Banks Peninsula
2 Includes only interruptions to mains/sub-mains and laterals.
Interruptions to individual properties are not measured
3 Includes all shut-downs – planned and unplanned
4 Shut downs considered to be shut downs to mains or sub-mains
5 All urgent requests for service, which includes serious leaks and other
items such as no water
6 Contractor response times measured rather than Council response times