Cholderton and District Water Company
Introduction
Cholderton and District Water Company supplies on average about 0.6 Ml/d of water to about 2,500 consumers in the villages of Cholderton and Shipton Bellinger in Wiltshire. The Company's water supplies come from two deep chalk borehole sources one duty and one standby, the standby borehole was not used during 1999. The Company has one treatment works, and distributes water through 44 km of pipes and two service reservoirs, one of which is considered part of the treatment works and supplies one water supply zone.
Overall water quality
At the water treatment works, the service reservoir and in the water supply zone, the Company carried out a total of 512 determinations in 1999, all of which demonstrated compliance with the relevant PCV.
Microbiological quality of water leaving treatment works
The Company complied with the sampling frequencies required by regulation 17 at its treatment works in 1999.
Table 5.1 shows the Company's performance in 1999, with data for 1998 and 1997 for comparison.
There were no contraventions of the microbiological standards at the Company's water treatment works in 1999.
Table 5.1 Cholderton and District Water Company
MICROBIOLOGICAL QUALITY OF WATER LEAVING TREATMENT WORKS1999 1998 1997 Number of water treatment works 1 1 1 Works with no sampling shortfall 1 1 1 COLIFORMS Total number of determinations 53 53 54 - number containing coliforms 0 0 0 - % containing coliforms 0.0 0.0 0.0 Treatment works with coliforms detected 0 0 0 - % of all works 0.0 0.0 0.0 FAECAL COLIFORMS Total number of determinations 53 53 54 - number containing faecal coliforms 0 0 0 - % containing faecal coliforms 0.0 0.0 0.0 Treatment works with faecal coliforms detected 0 0 0 - % of all works 0.0 0.0 0.0 Microbiological quality of water in service reservoirs
The Company complied with the sampling frequencies required by regulation 18 at its service reservoir in 1999.
Table 5.2 shows the Company's performance in 1999, with data for 1998 and 1997 for comparison.
There were no contraventions of the microbiological standards at the Company's service reservoir in 1999.
Table 5.2 Cholderton and District Water Company
MICROBIOLOGICAL QUALITY OF WATER IN SERVICE RESERVOIRS1999 1998 1997 Number of service reservoirs 1 1 1 Service reservoirs with no sampling shortfall 1 1 1 COLIFORMS Total number of determinations 53 53 54 - number containing coliforms 0 0 0 - % containing coliforms 0.0 0.0 0.0 Service reservoirs with coliforms detected 0 0 0 Service reservoirs with coliforms detected in
more than 5% of samples0 0 0 - % of all service reservoirs 0.0 0.0 0.0 FAECAL COLIFORMS Total number of determinations 53 53 54 - number containing faecal coliforms 0 0 0 - % containing faecal coliforms 0.0 0.0 0.0 Service reservoirs with faecal coliforms detected 0 0 0 - % of all service reservoirs 0.0 0.0 0.0 Water quality in water supply zones
The Company complied with the required sampling frequencies for all parameters in the zone.
Table 5.3 shows the Company's performance for 1999, with data for 1998 and 1997 for comparison.
There were no contraventions of the standards within the Company's supply zone.
Inspection
An inspection of Cholderton and District Water Company was carried out by Mr A Hallas, Inspector on 15 November 1999.
On the basis of his findings and observations during the inspection, he concluded that:
- the Company had arrangements for sampling and monitoring that generally satisfy the requirements of parts IV and V of the Regulations;
- the Company's contractual arrangements for sampling, analytical and reporting services, as audited, were generally satisfactory and the contract was well managed;
- the Company's procedures for reporting compliance data were generally satisfactory except that all references to addresses on the public record should be removed;
- the Company had assessed the potential effect of Year 2000 compliance and there were no systems that are likely to be affected; and
- the Company had still to undertake some contingency planning to minimize the possible effects of third party failures.
Mr Hallas made three recommendations and three suggestions in the light of the inspection for the Company to consider.
Table 5.3 Cholderton and District Water Company
WATER QUALITY IN SUPPLY ZONESColumns 'CBU' show, for determinations, contraventions covered by undertakings and, for zones, the total number of zones covered by undertakings in 1999. Column 'E' shows the number of zones for which new enforcement action is under consideration as a result of contraventions of the PCV in 1999.Please refer to the Introduction to Part 2 for more detailed explanation of this table. PARAMETER DETERMINATIONS in 1999 ZONES (1 in 1999)* Total Contravening PCV Non-compliant No. % CBU CBU E Number in: 1999 1999 1998 1997 Coliforms 12 0 0.0 0 0 0 0 0 0 Faecal coliforms 12 0 0.0 0 0 0 0 0 0 Colour 4 0 0.0 0 0 0 0 0 0 Turbidity 13 0 0.0 0 0 0 0 0 0 Odour 1 0 0.0 0 0 0 0 0 0 Taste 1 0 0.0 0 0 0 0 0 0 Hydrogen ion 13 0 0.0 0 0 0 0 0 0 Nitrate 12 0 0.0 0 0 0 0 0 0 Nitrite 12 0 0.0 0 0 0 0 0 0 Aluminium 4 0 0.0 0 0 0 0 0 0 Iron 5 0 0.0 0 0 0 0 0 0 Manganese 5 0 0.0 0 0 0 0 0 0 Lead 1 0 0.0 0 0 0 0 0 0 PAH 2 0 0.0 0 0 0 0 0 0 Trihalomethanes 1 0 0.0 0 0 0 0 0 0 Total pesticides 12 0 0.0 0 0 0 0 0 0 Other pesticides 72 0 0.0 0 0 0 0 0 0 All others 118 0 0.0 0 0 0 0 0 0 TOTAL 300 0 0.0 0 - - - - - *1 zone in 1998; 1 zone in 1997.
Improvement programmes
The Company currently has no undertakings in respect of improvement programmes.
Incidents
No events regarded as constituting incidents in which drinking water quality demonstrably deteriorated came to the attention of the Inspectorate in 1999.
Enforcement action
No enforcement action needed to be considered for the Company as a result of the Inspectorate's work in, or pertaining to, the calendar year 1999.
[ 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 12 July 2000; Updated 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