Great Britain. Office of Water Services
Annual report 2000-01 of the Director General of Water Services
Annual report 2002-03 of the Director General of Water Services for the period 1 April 2002 to 31 March 2003
Annual report 2007-08 for the period 1 April 2007 to 31 March 2008
Ofwat annual report 2008-09
The cost of quality
Comparing the performance of England & Wales water & sewerage companies with Sydney Water, Water Corporation Western Australia
International comparison of the demand for water
Ofwat National Customer Council and the ten regional Customer Service Committees
Protection for vulnerable customers