DATA RETURN ON MAINS RENOVATION FOR
S19 DISTRIBUTION UNDERTAKINGS COVERING THE PERIOD
1 JANUARY 1995 TO 31 MARCH 2000
Purpose
1. The purpose of this letter is to inform you of arrangements for making returns of data summarising the work carried out in fulfilment of the steps to be taken in discharging Section 19 distribution system undertakings. Data covering the whole of the period 1 January 1995 to 31 March 2000 are required. This letter also refers to a requirement concerning details of the identity of Water Supply Zones and sub-zones.
Background
2. Undertakings were accepted from water companies under Section 19 of the Water Industry Act 1991 to carry out the second tranche of quality-driven renovation (i.e. lining or replacement) of distribution systems for the period 1 January 1995 to 31 March 2000. This renovation work was due for completion by 31 March 2000.
3. Requirements for the reporting of data from each water company concerning distribution undertakings were set out in DWI Information Letter 4/96 and subsequent updates. Companies were notified in Information Letter 17 / 99 that the definitive return for the whole of the period 1 January 1995 to 31 March 2000 would be required by 30 June 2000. Details of the format required are set out in this letter.
4. Subject to satisfactory completion of Post-Renovation Assessment (see Section 11 below), this data return will
- be a definitive statement of the actions taken to discharge the requirements of these undertakings,
- enable the Inspectorate to confirm or otherwise that a company has discharged the requirements of its undertaking, and
- enable the Inspectorate to confirm the position to OFWAT for financial settlement.
Data Returns
5. Complete, correct and timely return of these data is important, as the Inspectorate will use them to assess the adequacy of the steps taken to comply with the requirements of the undertakings, and to inform OFWAT of the extent of work carried out in order to meet these obligations. Please refer to the definitions provided in Annex A. The standard of returns may be assessed and reported in the Chief Inspector's Annual Report.
6. The data are required in electronic form. As with the annual data returns, the Inspectorate will issue standard spreadsheets to each company for use as a template for the relevant data. It is important that these are used without modification to their format. Returns not in the standard format will not be accepted, and will be returned to the relevant companies for correct completion.
7. In order to ease the completion of these returns, the format for this return will largely follow that used for the annual returns. However, there are differences to take account of the period covered. There are also important differences in the categories to which Water Supply Zones are allocated in Sheet B, and an extra column for similar data at sub-zone level in Sheet E.
Reporting Pre- and Post-Renovation Assessment
8. Companies should report results of all Pre-Renovation Assessments (Pre-RA) which have been completed. It is important that complete information is provided so that the renovation work concerned can be credited as contributing to the company's commitment in the undertaking. Results of Pre-RA should now be available for all renovation work carried out in the period of the AMP2 undertakings (except for schemes formally accepted by the Inspectorate as 'Non-Standard Schemes').
9. Companies should report results of all Post-Renovation Assessments (Post-RA) which have been completed. It is expected that results of Post-RA should now be available for all renovation work carried out in the period of the AMP2 undertakings, with the exception of
- schemes formally accepted by the Inspectorate as 'Non-Standard Schemes',
- schemes started within the last 2 years and not yet completed, and
- some schemes completed in the last 12 months.
The last opportunity for reporting outstanding Post-RA data will be the next annual data return due by 28 February 2001. Schemes for which results of PPRA are not reported will not be credited to the undertaking.
10. If companies expect difficulty in meeting the reporting date of 28 February 2001 for Post-RA for a small number of schemes, they are asked to advise the Inspectorate of this beforehand. Arrangements can then be made for an additional submission to be made by 31 May 2001.
11. The methodology to be used to assess whether renovation work was justified and has been effective in dealing with water quality problems was set out in outline in Information Letter 4/96. The implementation of this methodology has recently been reviewed by the Inspectorate, with the assistance of water companies and taking account of work by Water UK on similar matters. Following this review, a more detailed procedure for appraising and reporting the results of PPRA has been issued in Information Letter 9 / 2000. Companies are asked to apply the procedures in Information Letter 9 / 2000 when completing Sheet E of the data return.
Identity of Water Supply Zones and sub-zones
12. In this data return, companies are asked to use the names and reference numbers for Water Supply Zones used in the latest accepted revision to the Annex to the 'AMP2' undertaking. Where changes have taken place in the delineation of zones, or in names or reference numbers, during the period covered by the undertaking, companies should have available a tabular list enabling all such changes to be tracked over each calendar year from 1995 to 2000. This list should include details allowing an audit trail of all sub-zones included in this data return. This list should be available for use by the Inspectorate and its Technical Assessors. There will be a requirement that future data returns include such a list. There will be an opportunity for consultation about the format of such a list, as well as the format of future data returns.
This letter
13. Guidelines for completion of the return (Annex A) and paper copies of spreadsheet templates (Annex B) are attached to this letter.
14. Enquiries concerning this letter should be directed to Milo Purcell, Principal Inspector (020 7944 5993, Milo_Purcell@detr.gov.uk), or Colin Evins (020 7944 5985, Colin_Evins@detr.gov.uk), Floor 2/F4, Ashdown House, 123 Victoria Street, London SW1E 6DE.
15. Copies of this letter are being sent for information to Pamela Taylor, Chief Executive of Water UK, to Bob Dinwiddy, Water Supply and Regulation Division in the Department of the Environment, Transport and the Regions, to Bob Macey, Environment Division, The National Assembly for Wales, and to Rowena Tye, Office of Water Services.
16. Please acknowledge receipt of this letter using the enclosed slip and envelope, giving the name and postal address or, preferably, the E-mail address of the person to whom the blank spreadsheet template should be sent.
Yours faithfully,
Michael Rouse
Chief Inspector.
Annex A:
DATA RETURN ON MAINS RENOVATION FOR
S19 DISTRIBUTION UNDERTAKINGS COVERING THE PERIOD
1 JANUARY 1995 TO 31 MARCH 2000
GUIDELINES FOR COMPLETION
General
1. Returns are due by 30 June 2000.
2. Data supplied should give the position on 31 March 2000.
3. Data should be supplied on all zones included in the Annex to each distribution Undertaking covering the period 1 January 1995 to 31 March 2000.
4. In order to simplify reporting for companies, the format used is generally the same as that used for annual data returns. However, there are differences to take account of the period covered. There are also important differences in the categories to which Water Supply Zones are allocated in Sheet B, and an extra column for similar data at sub-zone level in Sheet E.
5. References to the 'next' undertaking apply to that which includes all outstanding quality-driven renovation work identified in the Periodic Review 1999 process.
6. In recording renovation completed in all sheets, renovation work is defined as lining or replacement, as indicated in the Schedule to the Undertaking, and should exclude lengths of main abandoned.
7. In determining the outcome of PPRA, companies should apply the provisions of Information Letter 9 / 2000.
8. Companies should check all data before sending them to DWI; there may not be an opportunity to correct errors later.
9. Some of the data will be used to inform OFWAT of the extent of work carried out in order to meet the obligations in the undertakings.
10. Data should be supplied in the standard spreadsheet format provided by DWI on disc or by E-mail. Excel 97 is preferred; companies wishing to submit in another format are asked to contact Milo Purcell (020 7944 5993, Milo_Purcell@detr.gov.uk) or Paul Irving (020 7944 5988, Paul_Irving@detr.gov.uk)
11. The spreadsheet 'workbook' comprises five sheets. Data are to be entered by the companies in all areas of the spreadsheet with a heavy border. All relevant cells must contain the data required.
12. Please increase the number of rows in Sheets B, C, D and E as necessary to accommodate all Water Supply Zones and sub-zones. Please increase the number of columns in Sheet E as necessary to accommodate all methods of measurement. In doing so, please retain the cell formats.
13. Please do not alter the formats for the cells in which you are entering data, nor alter any other part of the spreadsheet, including the relative position of cells.
14. Before dispatch to the Inspectorate, companies must ensure that discs or E-mails contain data for the relevant reporting period and that they can be read.
15. The immediate consequence of any errors or omissions is that the company concerned will be involved in further work to correct the deficiencies. This will also delay the Inspectorate in carrying out its appraisal of the returns, and in sending relevant information to OFWAT. The Inspectorate may name any company whose performance in this respect is inadequate.
Sheet A: Company Summary
Definition:Name of water supply company.
| 2 | Cell F12 | Contact name | Text |
Definition:The name of the relevant person at the company to contact in case of an enquiry.
| 3 | Cell F13 | Date of report | Date (e.g. 21-Jun-00) |
Definition:The date on which the report was submitted to DWI. Where amended returns are sent subsequently, please bring this cell up to date.
| 4 | Cell F17 | Total indicative renovation from PR94 - Line | Number (Km) to 1 decimal place |
Definition: The indicative length (km) of mains to be lined for the period 1 Jan 1995 to 31 Mar 2000. This length was confirmed in letters from Mr O D Hydes dated February or March 1994 to those companies for which the Periodic Review 1994 indicated a need for renovation.
| 5 | Cell G17 | Total indicative renovation from PR94 - Replace | Number (Km) to 1 decimal place |
Definition: The indicative length (km) of mains to be replaced for the period 1 Jan 1995 to 31 Mar 2000. This length was confirmed in letters from Mr O D Hydes dated February or March 1994 to those companies for which the Periodic Review 1994 indicated a need for renovation.
| 6 | Cell H17 | Total indicative renovation from PR94 - Total | Number (Km) to 1 decimal place |
Definition: The total indicative length (km) of mains to be renovated (i.e. lined or replaced) for the period 1 Jan 1995 to 31 Mar 2000. This length was confirmed in letters from Mr O D Hydes dated February or March 1994 to those companies for which the Periodic Review 1994 indicated a need for renovation.
| 7 | Cell H18 | Total renovation in Schedule to undertaking - Total | Number (Km) to 1 decimal place |
Definition: Total length (km) of renovation (i.e. lining and replacement) in the Schedule to the undertaking (this may not reconcile with the total of lengths in the Annex. For nearly all companies, the length in this cell and the length in Cell H17 should be the same.
| 8 | Cell I20 | Fluoranthene work not carried out 1995-2000, km | Number (Km) to 1 decimal place |
Definition: Length (km) of mains for which renovation was planned as part of PAH schemes in the period 1 January 1995 to 31 March 2000, but where renovation was not carried out due to the change in the regulatory position of fluoranthene.
| 9 | Cell E27 | Completed - Lined - 1995 | Number(Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in 1995 for the purpose of improving water quality to meet the conditions of the undertaking.
| 10 | Cell F27 | Completed - Replaced - 1995 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually replaced in 1995 for the purpose of improving water quality to meet the conditions of the undertaking.
| 11 | Cell E28 | Completed - Lined - 1996 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in 1996 for the purpose of improving water quality to meet the conditions of the undertaking.
| 12 | Cell F28 | Completed - Replaced - 1996 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually replaced in 1996 for the purpose of improving water quality to meet the conditions of the undertaking.
| 13 | Cell E29 | Completed - Lined - 1997 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in 1997 for the purpose of improving water quality to meet the conditions of the undertaking.
| 14 | Cell F29 | Completed - Replaced - 1997 | Number (Km) to 1 decimal place |
Definition:Length (km) of mains actually replaced in 1997 for the purpose of improving water quality to meet the conditions of the undertaking.
| 15 | Cell E30 | Completed - Lined - 1998 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in 1998 for the purpose of improving water quality to meet the conditions of the undertaking.
| 16 | Cell F30 | Completed - Replaced - 1998 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually replaced in 1998 for the purpose of improving water quality to meet the conditions of the undertaking.
| 17 | Cell E31 | Completed - Lined - 1999 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in 1999 for the purpose of improving water quality to meet the conditions of the undertaking.
| 18 | Cell F31 | Completed - Replaced - 1999 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually replaced in 1999 for the purpose of improving water quality to meet the conditions of the undertaking.
| 19 | Cell E32 | Completed - Lined - Q1 2000 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually lined in Q1 2000 for the purpose of improving water quality to meet the conditions of the undertaking (whether or not individual schemes have been completed).
| 20 | Cell F32 | Completed - Replaced - Q1 2000 | Number (Km) to 1 decimal place |
Definition: Length (km) of mains actually replaced in Q1 2000 for the purpose of improving water quality to meet the conditions of the undertaking (whether or not individual schemes have been completed).
Sheet B: Status of Water Supply Zones
Please list all the Water Supply Zones (WSZs) included in the Annex to the undertaking covering the period 1 January 1995 to 31 March 2000 in the order in which they appear in the Annex.
Definition: Name of water supply company.
Definition: The name of the relevant person at the company to contact in case of an enquiry.
| 3 | Cell B6 | Date of report | Date (e.g. 21-Jun-00) |
Definition: The date on which the report was submitted to DWI. Where amended returns are sent subsequently, please bring this cell up to date.
| 4 | Column A | Sequential No | Number (whole number) |
Definition: The position of the Water Supply Zone as it appears in the Annex to the undertaking.
Definition: The company's reference number for the Water Supply Zone, as used in the Annex to the undertaking.
Definition: The company's name for the Water Supply Zone, as used in the Annex to the undertaking.
| 7 | Column D | Completion category | Number (whole number) |
Definition: The state of completion of renovation and PPRA in the WSZ, as defined in categories 1 to 6 below. Please enter the appropriate number. Note that the state of completion of sub-zones is to be recorded in Sheet E using similar categories. In this sheet, for categories 3 - 7, the sub-zone which has progressed least determines the category to which a WSZ is allocated.
* N.B. The 'next' undertaking is that which includes all outstanding quality-driven renovation work identified in the Periodic Review 1999 process.
| 8 | Category 1 | No renovation in AMP2, WSZ not in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which no renovation work was carried out in the AMP2 period, and the zone is NOT carried forward to the next* distribution undertaking. This will include zones where Level 2 or Level 3 investigations did not show a continuing problem in any sub-zone. It will also include zones where forthcoming changes in the regulations for PAH mean work previously anticipated for this purpose will not proceed.
| 9 | Category 2 | No renovation in AMP2, WSZ is in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which no renovation work was carried out in the AMP2 period, and the zone IS carried forward to the next distribution undertaking. This will include zones included in the AMP2 undertaking for 'Investigation' where Level 2 or Level 3 investigations have shown a continuing problem requiring renovation as a remedial action, and thus the zone is included in the next undertaking with renovation work in one or more of milestone packages 1 to 5.
| 10 | Category 3 | Renovation in AMP2 not completed, WSZ is in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which renovation work was carried out in the AMP2 period but not completed, and thus the zone IS carried forward to the next distribution undertaking, with renovation work in one or more of milestone packages 1 to 5. (Where a Water Supply Zone has one or more sub-zones in Category 3 and one or more sub-zones in Categories 4, 5, 6 or 7, include the Water Supply Zone in Category 3.)
| 11 | Category 4 | Renovation in AMP2, PPRA not completed, WSZ is in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which renovation work was carried out in the AMP2 period but PPRA has not yet been completed, and thus the zone IS carried forward to the next distribution undertaking, with Post-Renovation Assessment in milestone package 0. (Where a Water Supply Zone has one or more sub-zones in Category 4 and one or more sub-zones in Categories 5, 6 or 7, include the Water Supply Zone in Category 4.)
| 12 | Category 5 | Renovation in AMP2, Post-RA not satisfactory, WSZ is in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which renovation work was carried out in the AMP2 period but results of Post-RA were not satisfactory and further remedial action may be required, and thus the zone IS carried forward to the next distribution undertaking. (Where a Water Supply Zone has one or more sub-zones in Category 5 and one or more sub-zones in Category 6 or 7, include the Water Supply Zone in Category 5.)
| 13 | Category 6 | Renovation in AMP2, Post-RA not satisfactory, WSZ is not in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which renovation work was carried out in the AMP2 period but results of Post-RA were not satisfactory. However the zone has NOT been carried forward to the next distribution undertaking. (Where a Water Supply Zone has one or more sub-zones in Category 6 and one or more sub-zones in Category 7, include the Water Supply Zone in Category 6.)
| 14 | Category 7 | Renovation in AMP2, Post-RA is completed and satisfactory, WSZ not in next undertaking | |
Definition: Water Supply Zones included in the AMP2 undertaking in which renovation work was carried out in the AMP2 period, PPRA has been completed and reported, results were satisfactory and thus the zone is NOT carried forward to the next distribution undertaking. (Only include a Water Supply Zone in Category 7 if work in all sub-zones in the Improvement Programme has been completed satisfactorily.)
Sheet C: Zone Data
Please list all the Water Supply Zones (WSZs) included in the Annex to the undertaking covering the period 1 January 1995 to 31 March 2000 in the order in which they appear in the Annex.
Definition: Name of water supply company.
Definition: The name of the relevant person at the company to contact in case of an enquiry.
| 3 | Cell F6 | Date of report | Date (e.g. 21-Jun-00) |
Definition: The date on which the report was submitted to DWI. Where amended returns are sent subsequently, please bring this cell up to date.
| 4 | Column A | Sequential No | Number (whole number) |
Definition: The position of the Water Supply Zone as it appears in the Annex to the undertaking.
Definition: The company's reference number for the Water Supply Zone, as used in the Annex to the undertaking.
Definition: The company's name for the Water Supply Zone, as used in the Annex to the undertaking.
| 7 | Column D | Popn. 000s | Number |
Definition: The population supplied in the Water Supply Zone, in thousands (e.g. 32,400 would be shown as 32.4)
| 8 | Column E | Total mains - unlined iron | Number (Km) to 1 decimal place |
Definition: The total length (kilometres) of unlined iron mains in the Water Supply Zone. ('Unlined iron' comprises vertically cast, spun grey or ductile iron mains and includes those which had a nominal coal- tar or bitumen coating.)
| 9 | Column F | Total mains - other material | Number (Km) to 1 decimal place |
Definition: The total length (kilometres) of mains including all non-ferrous materials and also iron mains which have a factory - applied cement mortar lining or have subsequently been lined with cement mortar, epoxy resin or received any form of sliplining.
| 10 | Column G | Renov 90 to 94 - Line | Number (Km) to 1 decimal place |
Definition: The length (kilometres) of mains lined in the period 1990 to 1994 for the purpose of improving water quality to meet the conditions of the undertaking.
| 11 | Column H | Renov 90 to 94 - Replace | Number (Km) to 1 decimal place |
Definition: The length (kilometres) of mains replaced in the period 1990 to 1994 for the purpose of improving water quality to meet the conditions of the undertaking.
| 12 | Column I | Determs - 95 to 00 | Text |
Definition: The determinands listed against the zone in the Annex to the undertaking for the period 1995-2000. Please use the following abbreviations: Iron - Fe, Manganese - Mn, Aluminium - Al, Polycyclic Aromatic Hydrocarbons - PAH, Turbidity - Turb. (Where more than one apply in a WSZ, they may be entered in the same cell.)
| 13 | Column J | Actions 95 to 00 | Text |
Definition: The actions listed against the zone in the Annex to the undertaking for the period 1995-2000. Please use the following abbreviations I - Investigation, L- Lining, R - Replacement.
| 14 | Column K | Lengths completed - 1995 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 1995 and 31 December 1995 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 15 | Column L | Lengths completed - 1995 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 1995 and 31 December 1995 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 16 | Column M | Lengths completed - 1996 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 1996 and 31 December 1996 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 17 | Column N | Lengths completed - 1996 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 1996 and 31 December 1996 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 18 | Column O | Lengths completed - 1997 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 1997 and 31 December 1997 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 19 | Column P | Lengths completed - 1997 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 1997 and 31 December 1997 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 20 | Column Q | Lengths completed - 1998 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 1998 and 31 December 1998 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 21 | Column R | Lengths completed - 1998 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 1998 and 31 December 1998 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 22 | Column S | Lengths completed - 1999 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 1999 and 31 December 1999 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 23 | Column T | Lengths completed - 1999 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 1999 and 31 December 1999 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 24 | Column U | Lengths completed - 2000 - L | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually lined between 1 January 2000 and 31 March 2000 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
| 25 | Column V | Lengths completed - 2000 -R | Number (Km) to 1 decimal place |
Definition: The length (kilometres) actually replaced between 1 January 2000 and 31 March 2000 in the Water Supply Zone, for the purpose of improving water quality to meet the conditions of the undertaking, whether or not renovation work is continuing in the zone. This excludes any lengths abandoned.
Sheet D: Sub-Zone Data
Please list all the Water Supply Zones (WSZs) included in the Annex to the undertaking covering the period 1 January 1995 to 31 March 2000 in the order in which they appear in the Annex.
The whole of each WSZ in the Annex should be accounted for, including parts of the WSZ which are not to be renovated. Thus the lengths of mains and populations given here for sub-zones within a WSZ should sum to the figures given for that WSZ in Sheet C. However, parts of a zone which are not in the improvement programme may be aggregated for this purpose. (For example, if problems have been shown to be confined to two small sub-zones, and no S19 renovation work will be carried out in the remainder of the WSZ in this or a subsequent Undertaking, there could be an entry for 'rest of zone'.)
Definition: Name of water supply company.
Definition: The name of the relevant person at the company to contact in case of an enquiry.
| 3 | Cell G6 | Date of report | Date (e.g. 21-Jun-00) |
Definition: The date on which the report was submitted to DWI. Where amended returns are sent subsequently, please bring this cell up to date.
| 4 | Column A | Sequential No | Number (whole number) |
Definition: The position of the Water Supply Zone as it appears in the Annex to the undertaking.
Definition: The company's reference number for the Water Supply Zone, as used in the Annex to the undertaking.
| 6 | Column C | Name and/or Ref No | Text |
Definition: The company's name and/or reference number for the sub-zone. Where the company opts to assess work on the whole of a Water Supply Zone, please enter "whole zone" as a sub-zone name, and complete one row of the table. Please group together, on successive rows of the table, the sub-zones within a Water Supply Zone. Please complete columns A, B and C for ALL sub-zones (not just the first sub-zone in a WSZ).
| 7 | Column D | Popn. 000s | Number |
Definition: The population supplied in the sub-zone, in thousands (e.g. 32,400 would be shown as 32.4)
| 8 | Column E | Total mains, km | Number (Km) to 1 decimal place |
Definition: The total length (kilometres) of all mains in the sub-zone.
| 9 | Column F | In imp. prog? Y/N | Text |
Definition: Enter Y or N depending on whether or not the Water Supply Zone is included in the Improvement Programme.
Y: sub-zone which has received renovation in the AMP2 period or is likely to require renovation under the next undertaking;
N: sub-zone which does not require renovation but is included in this sheet to complete coverage of the Water Supply Zone.
| 10 | Columns G - N | Programme | Dates (e.g. Apr-98) |
Definition: The company's timetable for investigation, assessment and renovation in the zone and sub-zone. All sub-zones listed as being in the improvement programme should have entries as follows. Where the WSZ is listed in the Annex for Investigation, the dates if the investigations at least to Level 2 should be given. Where the WSZ is listed in the Annex for lining and/or Replacement, the dates of investigation, renovation and Post-Renovation Assessment (Post-RA) should be given for those sub-zones where renovation may be carried out. Where a company carries out simultaneously investigations corresponding to levels 2 and 3, the appropriate dates should be entered into both columns. For definitions of levels of investigation, see DWI information Letter 16/97, Annex B. For all past actions, please give actual dates. For future actions, please give estimated dates.
| 10 | Column G | Programme - L2 investign - from | Date (e.g. Apr-98) |
Definition: Date of start of Level 2 investigations in the sub-zone.
| 11 | Column H | Programme - L2 investign - to | Date (e.g. Apr-98) |
Definition: Date of end of Level 2 investigations in the sub-zone.
| 12 | Column I | Programme - L3, Pre-RA - from | Date (e.g. Apr-98) |
Definition: Date of start of Level 3 investigations (= Pre-Renovation Assessment) in the sub-zone.
| 13 | Column J | Programme - L3, Pre-RA - to | Date (e.g. Apr-98) |
Definition: Date of end of Level 3 investigations (= Pre-Renovation Assessment) in the sub-zone.
| 14 | Column K | Programme - Renovation - from | Date (e.g. Apr-98) |
Definition: Date of start of renovation in the sub-zone.
| 15 | Column L | Programme - Renovation - to | Date (e.g. Apr-98) |
Definition: Date of end of renovation in the sub-zone.
| 16 | Column M | Programme - Post RA - from | Date (e.g. Apr-98) |
Definition: Date of start of Post-Renovation Assessment in the sub-zone.
| 17 | Column N | Programme - Post RA - to | Date (e.g. Apr-98) |
Definition: Date of end of Post-Renovation Assessment in the sub-zone.
| 18 | Column O | Renov carried out - Lined | Number (Km) to 1 decimal place |
Definition: Length (kilometres) of mains lined in the sub-zone between 1 January 1995 and 31 March 2000 for the purpose of improving water quality to meet the conditions of the undertaking, whether or not work is continuing in the sub-zone. This excludes any lengths abandoned.
| 19 | Column P | Renov carried out - Replaced | Number (Km) to 1 decimal place |
Definition: Length (kilometres) of mains replaced in the sub-zone between 1 January 1995 and 31 March 2000 for the purpose of improving water quality to meet the conditions of the undertaking, whether or not work is continuing in the sub-zone. This excludes any lengths abandoned.
Definition: Please distinguish between 'non-standard schemes' (i.e. renovation work appraised and justified using methods which pre-date the acceptance by DWI of the company's strategy in 1996 or 1997) and work assessed using methods in the approved strategy. Enter 'X' in this column for non-standard work accepted by the Inspectorate and listed in an attachment to a formal letter of acceptance. Where both non-standard and standard work has been carried out in a sub-zone, please complete a row of the spreadsheet for each.
Sheet E: Sub-zone Assessment Data
Please list all the Water Supply Zones (WSZs) included in the Annex to the undertaking covering the period 1 January 1995 to 31 March 2000 in the order in which they appear in the Annex.
Please report all results of Pre-Renovation Assessments (Pre-RA) which have been completed, as well as all results of Post-Renovation Assessments (Post-RA) which have been completed.
For each sub-zone which is separately assessed, data should be provided for at least one 'List A' method and at least one 'List B' method of measurement.
Definition: Name of water supply company.
Definition: The name of the relevant person at the company to contact in case of an enquiry.
| 3 | Cell I6 | Date of report | Date (e.g. 21-Jun-00) |
Definition: The date on which the report was submitted to DWI. Where amended returns are sent subsequently, please bring this cell up to date.
| 4 | Column A | Sequential No | Number (whole number) |
Definition: The position of the Water Supply Zone as it appears in the Annex to the undertaking.
Definition: The company's reference number for the Water Supply Zone, as used in the Annex to the undertaking.
| 6 | Column C | Name and/or Ref No | Text |
Definition: The company's name and/or reference number for the sub-zone. Where the company opts to assess work on the whole of a Water Supply Zone, please enter "whole zone" as a sub-zone name, and complete one row of the table. Please group together, on successive rows of the table, the sub-zones within a Water Supply Zone. Please complete columns A, B and C for ALL sub-zones (not just the first sub-zone in a WSZ).
| 7 | Column D | Dates of Pre-RA - from | Date (e.g. Apr-98) |
Definition: Date of start of Pre-Renovation Assessment (= Level 3 investigation) in the sub-zone.
| 8 | Column E | Dates of Pre-RA - to | Date (e.g. Apr-98) |
Definition: Date of end of Pre-Renovation Assessment (= Level 3 investigation) in the sub-zone.
| 9 | Column F | Dates of Post-RA - from | Date (e.g. Apr-98) |
Definition: Date of start of Post-Renovation Assessment in the sub-zone.
| 10 | Column G | Dates of Post-RA - to | Date (e.g. Apr-98) |
Definition: Date of end of Post-Renovation Assessment in the sub-zone.
| 11 | Row 10 | Methods 1, 2, 3, 4, etc. | Text |
Definition: Methods of measurement for PPRA, as defined in the company's strategy document. Each method of measurement requires four columns in the spreadsheet. Please add further columns if more than four methods are used. Please provide a full explanation of any abbreviations used in this sheet.
| 12 | Columns H, L, P, T etc. | UNsat before? | Text |
Definition: Water quality UNsatisfactory before renovation, using the criteria defined in the company's strategy document.
| 13 | Columns I, M, Q, U etc. | Satisf after? | Text |
Definition: Water quality satisfactory after renovation, using the criteria defined in the company's strategy document.
| 14 | Columns J, N, R, V etc. | Subs diff? | Text |
Definition: Substantial difference between pre- and post-renovation results, using the criteria defined in the company's strategy document.
| 15 | Columns K, O, S, W etc. | Signif diff? | Text |
Definition: Difference between pre- and post-renovation results statistically significant at the 90% confidence level, using the methods defined in the company's strategy document.
| 16 | Column X | State of completion | Text |
Definition: Please indicate the state of completion of work in the sub-zone, using the following categories:
1 No renovation was carried out in the sub-zone in the AMP2 period, and none is due to be done under the next undertaking.
2 No renovation was carried out in the sub-zone in the AMP2 period; renovation is due to be done under the next undertaking.
3 Renovation was carried out in the sub-zone in the AMP2 period but not completed; the renovation is due for completion under the next undertaking.
4 Renovation was carried out in the sub-zone in the AMP2 period, but PPRA was not completed; PPRA is due in Milestone 0 of the next undertaking.
5 Renovation was carried out in the sub-zone in the AMP2 period, but PPRA was not satisfactory; renovation is due in Milestone 1 of the next undertaking.
6 Renovation was carried out in the sub-zone in the AMP2 period, but PPRA was not satisfactory; however no further renovation is planned under the next undertaking.
7A Renovation was carried out in the sub-zone in the AMP2 period and completed; the scheme is on the list of Non-Standard Schemes formally accepted by DWI; renovation work is not due in the sub-zone under the next undertaking.
7B Renovation was carried out in the sub-zone in the AMP2 period and completed, full PPRA was completed and gave satisfactory results; renovation work is not due in the sub-zone under the next undertaking.
Annex B:
DEFINITIVE DATA RETURN ON MAINS RENOVATION
FOR S19 DISTRIBUTION UNDERTAKINGS
COVERING THE PERIOD 1 JANUARY 1995 TO 31 MARCH 2000
The following document are available in Adobe Acrobat format for downloading. The Adobe® Acrobat Reader® can be freely downloaded.
REPLY SLIP
Please complete the acknowledgement below and return it, using the attached envelope, to
Paul Irving
The Drinking Water Inspectorate
Floor 2/F2
Ashdown House
123 Victoria Street
London
SW1E 6DE.
I acknowledge receipt of DWI Information Letter 14 / 2000
'Data return on mains renovation for S19 distribution undertakings covering the period
1 January 1995 to 31 March 2000'
Please send the blank spreadsheet (in Excel 97) by E-mail / on disc* to
Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Telephone . . . . . . . . . . . . . . . . . . . . . . . . .
E-mail address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Postal address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
* please delete as appropriate
| A - Z Index |
Business and Technical |
Consumer Information |
Contacting us |
| DWI Home Page |
News |
Product Approval |
Search our site |
Wales |
Drinking Water Inspectorate,
Floor 2/A1, Ashdown House, 123 Victoria Street, London, SW1E 6DE
Telephone : 020 7944 5956 - Facsimile : 020 7944 5969
E-mail: dwi_enquiries@detr.gov.uk
Updated 11 July 2001
Return to Current Information Letters Index
Return to Information Letters Index
Return to Drinking Water Inspectorate Home Page
Department for Environment, Food & Rural Affairs (DEFRA)Home Page
The National Assembly for Wales / Cynulliad Cenedlaethol Cymru Home Page
Web site terms
© Crown copyright 2001
