Cambridge Water Company
Overall Water Quality supplied by Cambridge Water in 2000
A total of 11,206 tests were carried out by Cambridge Water in 2000. Of these tests, 99.81% complied with the Regulations.
Company Information Amount of Water Supplied: 70 Ml/d Consumers Supplied: 291,700 Areas of Supply: Cambridge and surrounding areas Water Composition: 100% from boreholes and aquifers Treatment Works: 23 Service Reservoirs: 33 Km of Mains: 2,194 Water Supply Zones: 14 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 4,480 tests on samples taken in its 14 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
854
7
0.82
-
Iron
142
1
0.70
-
PAH
95
1
1.05
-
Treatment works
Of the Company's 23 treatment works, 18 (78%) complied fully with the relevant standards. Failures of the standards at two works have 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 were detected are not considered significant. Service reservoirs
At all of the Company's 33 service reservoirs, coliforms were absent from at least 95% of samples. There were no failures of the standard for faecal coliforms. Differences over the last three years in the number of service reservoirs, and samples from service reservoirs, in which 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 four 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
Investigation of Computer Systems and associated Data Management for drinking water quality information appearing on the Public Record
March
Annual assessment of 1999 compliance data
April/May
Audit trails of five samples
October
Audit of plumbosolvency treatment and control programs of work
November
No major deficiencies were identified but a number of recommendations were made, in relation to computer systems and data management. Incidents
- No events significantly affecting the quality of drinking water were notified to the Inspectorate by the Company during 2000.
Improvement Programmes Carried Out by the Company
- There were no programmes of work due for full completion during 2000.
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
2 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
