Overall Performance Assessment

  

Unit

2005/06

2006/07

2007/08

2008/09

DG2:  Number of properties receiving  low pressure

Number

17

23

17

17

DG3:  Unplanned supply interruptions

Performance score index

0.09

0.06

0.09

0.02

DG4: Restrictions on water use

Number

0

0

0

0

DG4: Drought orders issued

Number

0

0

0

0

DG6: Billing contacts answered within five working days

%

99.71

99.98

99.97

99.95

DG7: Response to written complaints within 10 working days

%

100.0

100.0

100.0

100.0

DG8: Metered customers receiving bills based on actual readings

%

99.92

99.84

99.83

99.85

DG9: Percentage of telephone calls abandoned

%

5.1

7.9

3.1

3.6

DG9: Percentage of telephone callers receiving an engaged tone

%

0

0

0

0

DG9: Customer satisfaction survey

Maximum score is 5

4.67

4.54

4.75

4.72

Total leakage

Ml/d

13.9

13.4

13.9

14.3

Drinking water quality  measured by DWI

Performance score index

100

100

100

100

Assessed Customer Service

Max score is 10

10

10

10

10

Overall performance assessment

Max score is 288

286

286

287

286

x