Book Of Numbers



Lookup BonRefs

Manage Measures for Output

Display Data and Graphs

Download Data


Welcome to the BookOfNumbers web site

This web site has been produced by WRc plc as part of the WRc Portfolio Project CP346, Web-Based Benchmarking.

This project provides web-based access to OFWAT Annual Return Data from 1998 � 2008.

Users can select measures by Table, Year, BON reference or by using a free-text search. The selected Measures or user defined derived measures can be plotted for selected years or companies on customised graphs together with calculated summary data (min, mean, max and quartile). Selected and / or derived data can be downloaded into Microsoft Excel for further desktop analysis.

This web-site is password protected with access to subscribed members of the project. If you would be interested in joining the project please contact Ian Dawes on 01793 865165 or e-mail Ian on

Recent Updates 30th Nov 2009

The following tables have been loaded for the annual return data 2008-09

Board OverviewA,B,C,D,E
Key Outputs1,2,3,3a,4,5,5a,6,6a,6b
Non Financial Measures7,8,9,10,11,11a,12,13,14,15,16, 16a,16b
Sewer Explanatory Factors17,c, 17,d, 17f, 17g
Regulatory Accounts18,18c,18d,19,20,21,22,23,24,25,26,27,28,29
Financial Measures32, 33, 34, 35, 36, 37, 38

In 2008 South East water and Mid-Kent water merged. The old MSE (South-east water) and MKT (Mid-Kent Water) codes are no longer used and have been replaced in the 2008-09 data by the new SEW code (South-East water).

Tables 10a,10b and 17a, 17b will be loaded in 2010 when the data is publicly available.