Table 11 NORTHERN IRELAND WATER LIMITED - ANNUAL INFORMATION RETURN 2010 ANNUAL INFORMATION RETURN - TABLE 11 NON FINANCIAL MEASURES WATER SERVICE ACTIVITIES (NI Water Only) 1 2 3 4 BASE REPORTING REPORTING REPORTING DESCRIPTION UNITS DP YEAR SBPYEAR YEAR YEAR 2006-07 CG 2007-08 CG 2008-09 CG 2009-10 CG A ASSET BALANCE AT APRIL 1 1 Total length of mains km 2 25921.72 C3 25972.00 B3 26067.07 B3 26349.22 B3 B CHANGES DURING REPORT YEAR 2 Mains renewed km 2 239.87 B3 136.00 A2 288.62 C2 172.22 A2 3 Mains relined km 2 10.05 B3 0.00 A2 0.00 A2 0.00 A1 4 Mains cleaned (total) km 2 8259 jobs C5 1925.35 B4 1487.62 B3 5 Distribution mains cleaned for quality km 2 0.00 A2 96.41 C5 376.27 B3 6 New mains km 2 199.18 B3 238.00 A2 354.01 C2 298.88 A2 7 Mains abandoned and other changes km 2 148.90 B3 259.00 A2 360.48 C2 325.10 A2 8 Lead communication pipes replaced - quality nr 0 168 B3 380 B3 9 Lead communication pipes replaced - maintenance or other nr 0 659 B3 385 B3 1371 B3 10 Communication pipes replaced - other nr 0 9809 B4 8801 B3 6418 B3 11 Mains bursts per 1000km nr 0 139 C3 141 B3 147 B3 C ASSET BALANCE AT MARCH 31 12 Total length of mains km 2 25972.00 B3 26067.07 B3 26349.22 B3 26435.45 B3 D DISTRIBUTION STUDIES 13 Cumulative number of distribution zone studies completed nr 0 22 A1 30 A1 46 A1 54 A1 14 Distribution zone studies ongoing nr 0 27 A1 21 A1 19 A1 17 A1 15 Total distribution zones identified for study nr 0 71 A1 71 A1 71 A1 71 A1 16 Cumulative % distribution zone studies completed % 1 31.0 A1 42.3 A1 64.8 A1 76.1 A1 17 Percentage population/properties - completed studies % 1 31.0 A1 43.1 A1 60.8 A1 71.9 A1 E OTHER WATER SERVICE ACTIVITIES 18 Length of aqueducts refurbished for maintenance km 2 19 Substantive refurb. work - dams & impounding reservoirs (maintenance) nr 0 20 Number of existing water treatment works refurbished for maintenance nr 0 21 Capacity of refurbished water treatment works for maintenance Ml/d 3 22 Number of new or enhanced water treatment works for quality nr 0 23 Distribution input of new or enhanced water treatment works for quality Ml/d 0 24 Number of pumping stations refurbished for maintenance nr 0 25 Number of service reservoirs & water towers refurbished for maintenance nr 0 26 Number of household meters renewed nr 0 27 Number of security related improvements nr 0 28 Environmental impact - number of investigations nr 0 29 Environmental impact - number of options appraisals nr 0 30 Other environmental improvements nr 0 Annual Information Return 2010 Page 1 of 8 Section 2 Chapter 11 Table 11 - Non Financial Measures - Water Service Activities (NIW only) General The Reporter recommended consolidation of Table 11 methodologies to improve visibility and avoid possible conflicts to this end the Asset Management Section (AMS) has co-ordinated the input into this table from a number of sources. Line 1 – Total length of mains at 1 April The value of 26349.22km has been extracted from line 12 of the AIR09 Table 11. Lines 2 – 10 – Changes during the reporting year Asset Management Section has compiled submitted data from EP Procurement Business Unit and from Networks Water Operations to populate the values for these lines. The confidence grades have been reviewed by AMS, taking into consideration those proposed by both NIW sections, as follows: The confidence grades for lines 2, 6, 7 and 9 have been proposed as A2, as: 1. The EP Procurement Business Unit’s confidence grades for these lines were A1, and those from Networks Water Operations were B3; and 2. The proportion of the data, from Networks Water Operations, for these lines is minimal. The confidence grades for line 3 remains as A1 is proposed by EP Procurement Business Unit, as this operation has not been carried out by Networks Water Operations. The confidence grades for lines 4, 5 and 8 remain as proposed by Networks Water Operations i.e. B3, as either these lines are not relevant to EP or they have zero as a return. The confidence grade for line 10 has been proposed as B2 as: 1. The EP Procurement Business Unit’s confidence grades for this line was A1, and that from Networks Water Operations was B3; and 2. The proportion of the data, from Networks Water Operations, for this line amounts to 20% of the total value populated in table. The commentaries from EP Procurement Business Unit and from Water Supply are contained below. The Reporter recommended re-assessing the method for reporting of line 7; a process still has to be developed to ensure that CAR can provide a single source of data for this line. However the latter is presently not possible with Annual Information Return 2010 Page 2 of 8 Section 2 Chapter 11 the current software and NIW procedures, hence NIW has not been able to alter it’s method for reporting the total length of abandoned mains in Table 11 Line 7, for AIR10 . Commentary from EP Procurement Business Unit for Lines 2, 3, 6-10 B CHANGES DURING REPORT YEAR 2 Mains renewed km 166.67 A1 3 Mains relined km 0 A1 4 Mains cleaned (total) km N/A N/A 5 Distribution mains cleaned for quality km N/A N/A 6 New mains km 298.30 A1 7 Mains abandoned and other changes km 319.9 A1 8 Lead communication pipes replaced - quality nr 0 A1 9 Lead communication pipes replaced - maintenance or other nr 1337 A1 10 Communication pipes replaced - other nr 5075 A1 General NIW intends to replace/rehabilitate approximately 1.3% of the water mains network on an annual basis. This is equivalent to 915 km over the 3 year period of 07/08, 08/09 and 09/10. One of the main drivers for the water mains ‘rehab’ project is water quality. The rehab programme is driven by a priority scoring. The coarse information used at the outset to define zonal study priority is further refined to determine exact construction priority. These work packages are then further split into high and low priority areas. At each stage more information has been gathered to ensure that the most accurate and up to date information is utilised. Lines 2, 3, 6 – 10 – Changes during the Reporting Year All information is compiled from EP contract management information monthly returns. This is an accurate measurement of the actual lengths of water mains laid, renovated or replaced, compiled from contractor’s on-site records. The information is collated from each individual contract on a monthly basis and aggregated into an overall annual figure. The EP data is assessed as confidence grade A1 on the basis of the competency of our long term contracting partners’ understanding of their reporting requirements, the quality and robustness of their on-site measurements and NI Water’s ‘Captrax’ management system which stores the information and is used to populate the AIR table. Please note: NI Water has maintained its method of reporting of new and renewed mains in lines 2 and 6 as from previous years. The Reporter in his report of August 2009 indicated that this reporting method resulted in double counting and the Regulator in his Annual Information Return reporting requirements and definitions manual, March 2010 requires that mains activity lengths should only be reported on Lines 2, 3, and 6 on the basis of primary purpose for the activity. NI Water had maintained it’s method of capturing information from source throughout the year pending confirmation of reporting requirements from the Regulator. The possibility of interrogating the records Annual Information Return 2010 Page 3 of 8 Section 2 Chapter 11 retrospectively to address the double counting has been considered and determined to be very labour and time intensive. Consequently we are of the opinion that it is an inappropriate use of resources to comply with the recent guidance. The new reporting requirements are in place for pipes laid from 1 April 2010. Please note: The expenditure on water mains infrastructure for 09/10 is almost exactly the same as that for 08/09; however, the outputs for mains renewed and new mains (lines 2 & 6) are less than 08/09. This reduction is due to a greater expenditure on trunk mains in 09/10 and more activity in urban areas, at a more expensive rate than rural activity. Also, the numbers of lead communications pipes (lines 8 & 9) has increased, consistent with an increased activity in urban areas. The Reporter had recommended that NIW should improve field data records to enable more direct categorising of replaced communication pipe materials. For the last elements of the current framework, the clerk of works on site has had to sign the track sheets clearly identifying lead services from any other services. For the new framework, that is now awarded, there has been a change of coding to clearly identify lead services and this is incorporated into the new Cost Management System. The confidence grades for EP information for these lines 2, 3, 6 - 10, remain as last year. Lines 4 & 5 EP does not undertake any of these functions as part of construction projects. Commentary from Network Water Operations for Lines 2 - 10 B CHANGES DURING REPORT YEAR 2 Mains renewed km 5.548 B3 3 Mains relined km 0 4 Mains cleaned (total) km 1487.62 B3 5 Distribution mains cleaned for quality km 376.272 B3 6 New mains km 0.575 B3 7 Mains abandoned and other changes km 5.195 B3 8 Lead communication pipes replaced - quality nr 380 B3 9 Lead communication pipes replaced - maintenance or other nr 34 B3 10 Communication pipes replaced - other nr 1343 B3 The following provides the commentary on lines for Network Water Operations which record the amount of maintenance activity carried out in the report year 09/10 on water mains and communication pipes.