Bristol Water PLC
Overall Water Quality supplied by Bristol Water in 2000
A total of 43,287 tests were carried out by Bristol Water in 2000. Of these tests, 99.90% complied with the Regulations.
Company Information Amount of Water Supplied: 290 Ml/d Consumers Supplied: 1,086,000 Areas of Supply: Bristol and surrounding parts of Somerset, Gloucestershire and Wiltshire Water Composition: 75% from rivers and reservoirs
25% from boreholes and aquifersTreatment Works: 15 Service Reservoirs: 181 Km of Mains: 6,500 Water Supply Zones: 52 Water Quality in Water Supply Zones, at Treatment Works, and in Service Reservoirs
Water supply zones
- In general, to be wholesome, water must comply with the standards set out in the Regulations. The Company carried out a total of 18,981 tests on samples taken in its 52 water supply zones. The table below includes only the parameters that breached the standard. All other parameters fully complied with the standards. Parameter meanings can be found at the beginning of this section.
- The last column indicates the number of failures in zones already covered by legally binding undertakings given by the Company to carry out remedial works to overcome the difficulty in meeting the individual standard.
Parameter
Total samples taken
Samples not meeting the standard
Percentage
Number of failures already covered by undertakings
Total coliforms
2,997
11
0.37
-
Iron
556
3
0.54
2
PAH
303
13
4.29
9
Treatment works
Of the Company's 15 treatment works, 11 (73%) complied fully with the relevant standards. Failure of the standard at one works resulted in consideration of enforcement action. All other failures at treatment works were considered trivial and unlikely to recur. Differences over the last three years in the number of treatment works, and samples from treatment works, in which coliforms or faecal coliforms were detected are not considered significant. Service reservoirs
At all of the Company's 181 service reservoirs, coliforms were absent from at least 95% of samples. Failures of the standard for faecal coliforms at two service reservoirs were considered trivial. Differences in the last three years in the number of service reservoirs, and samples from service reservoirs, in which coliforms or faecal coliforms were detected are not considered significant. Company Audit and Inspection Link to expanded information (web site version)
- The Company was inspected or audited by DWI or its appointed consultants on five occasions in 2000. Where relevant, report summaries are available in the ‘Business and Technical’ section of DWI’s web site under ‘Audit and Inspection’.
Audit or Inspection
Date
Annual assessment of 1999 compliance data
April/May
Audit trails of five samples
September
Audit of plumbosolvency treatment and control programmes of work
November
Review of procedures for operation and maintenance of the distribution network
December
Inspection of distribution system improvement programme progress.
Ongoing
No major deficiencies were identified but a number of recommendations were made, in relation to the Audit of plumbosolvency treatment and control programmes of work. Incidents
- The Inspectorate did not regard any of the events notified during 2000 by the Company as incidents in which drinking water quality demonstrably deteriorated.
Improvement Programmes Carried Out by the Company
- No remedial programmes of work were due for full completion during 2000.
- The ongoing distribution system improvement programmes due for completion in 2002, which have been implemented by the Company, have been progressing satisfactorily.
Enforcement Action
- The table below indicates areas where DWI is considering, or has taken enforcement action for, breaches of regulations.
Parameter/Area
Number
Regulation Breached
Total coliforms
1 works
Regulation 3(7)
[ Previous ] [ Contents ] [ Next ]
| 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
Published 11 July 2001
Return to Publications and Reports 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
