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Key Performance Indicators

 
  Financial Year (Percentage)
Indicators 11/12 12/13 13/14
Fresh Water Quality [100% compliant with WHO’s “Guidelines for Drinking-water Quality”(2011#)] 100 100 100
Salt Water Quality [96% compliant with WSD Water Quality Objectives] complied with complied with complied with
Fresh Water Supply Pressure (15 – 30 metres)λ 100 100 100
Salt Water Supply Pressure (15 metres)λ 100 100 100


 
  Financial Year (Percentage)
Indicators 11/12 12/13 13/14
Response Time for Attendance to Fault Complaints
  • Fresh Water Supply Fault^ (within half a day)
  • Others (within a working day)
 99.2
99.8		 99.97
99.97		 100
100
Duration of Suspension of Water Supply for Planned Works(97% within 8 hours) complied with complied with complied with
Accuracy of Water Meters@ (inaccuracy not exceeding ±3%) 95.3 96.0 96.4*
Interim Reply to Correspondence from the Public (10 Calendar Days) 98.2 99.9 99.96
  • #
  • The 2011 WHO Guideline standards were adopted in August 2012.
  • ^
  • Including cases of no fresh water supply; polluted fresh water supply; and internal fresh water pipe burst likely to cause flooding.
  • λ
  • Minimum residual pressure (or pressure range) in the distribution systems except at their extremities.
  • @
  • Water meters are deemed to register correctly if their inaccuracy does not exceed ±3%.
  • *
  • The target for 2014/2015 is 96.7%.

Fresh Water Quality, Fresh Water Supply Pressure, Salt Water Supply Pressure Diagram

Response Time for Attendance to Fault Complaints Diagram

Accuracy of Water Meters, Interim Reply to Correspondence from the Public Diagram