June Return 2005 Public Domain

Yorkshire & York

Boards Overview, Table B
Sewerage Service - Key Outputs and Service Delivery

Description Units 1997-98 1998-99 1999-00 2000-01 2001-02 2002-03 2003-04 2004-05
KEY OUTPUTS AND SERVICE DELIVERY
DG5 - PROPERTIES AT RISK OF FLOODING
1 Removed by company action nr 155 59 98 94 82
2 % of total domestic properties subject to internal sewage flooding % 0.04 0.03 0.03 0.03 0.03 0.03 0.02 0.02
DELIVERING THE QUALITY ENHANCEMENT PROGRAMME
3 Sewerage improvements: % of satisfactory intermittent discharges % 53.45 59.76 71.41 84.05 92.93
4 Sewerage improvements: number of intermittent discharges improved nr 114 181 296 314 217
5 STW Improvements: Population equivalent served by improved STWs 000s 1,568.91 663.20 180.00 126.00 149.00
6 STW Improvements: Number of enhanced sewage treatment works nr 37 84 91 37 69
MAINTAINING SERVICEABILITY TO CUSTOMERS
7 Sewer collapses per 1,000km nr 24.0 24.0 25.0 15.0 7.0 9.4 9.4 10.1
8 Nr of pollution incidents at CSOs and sewers (categories 1 to 3) nr 251 236 214 202 200 112 144 119
9 Percentage of sewage treatment works failing numeric consents % 0.60 0.80 1.30 1.10 1.14 1.30 3.09 0.16
10 % equivalent population served by non compliant works failing LUT consents % 0.00 0.00 3.60 0.00 0.62 0.00 0.17 0.03
11 Properties flooded in the year (overloaded sewers) nr 307 179 215 144 140 284 119 203


This data has been viewed by the company prior to publication. This file created on: September 29, 2005 at 15:50:22.
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