J. Products and Processes in the Provision of Water Supplies
The Inspectorate on behalf of the Authorities administers the approval of substances, products and processes used in the provision of public water supplies under Regulations 25-28 of the Water Supply (Water Quality) Regulations 1989.
The Committee on Products and Processes (the Committee) advises the Authorities on approval issues.
Approvals Issued in 2000
The purpose of the approval scheme is to ensure that chemicals and construction materials do not cause adverse effects on water quality.
Approval is given solely for the purposes of Regulation 25 and does not imply any recommendation as to the technical merits of products.
The Committee met on six occasions in 2000. The Authorities approved 40 products, but two products were refused approval.
The Authorities also approved the modification of conditions of approval to 15 currently listed products.
During 2000 the Technical Secretariat handled 1060 enquiries. All were answered promptly, in line with the standards set in the DWI Code for Enforcement and the Committee's Charter.
The Secretary of State's list of approved products contains all the currently approved products that may be used in public water supply. The list is posted on the DWI web site address at http://www.dwi.detr.gov.uk/soslist/index.htm.
Biocidal Product Regulations
DWI contributed to the interdepartmental meetings on the Biocidal Products Directive. This Directive was implemented in UK law in May 2000 as the Biocidal Products Regulations (BPR).
All disinfectants, including those previously considered by the Committee for regulatory approval and those considered under the voluntary approval scheme for swimming pool chemicals now fall within the scope of the BPR.
The change in remit led to renaming the Committee to the "Committee on Products and Processes for Use in Public Water Supply".
Regulatory Changes in 2000
Regulatory changes affected certain types of products listed below. Further technical information can be obtained from the DWI web site at http://www.dwi.detr.gov.uk on:
- polyamine flocculants
- epoxy resins
- Epoxy lining - Operational Guidelines and Code of Practice (OG/CP)
- organo-lead stabilisers in PVC-U water supply pipes
- rapid-setting polymeric linings
- products based on activated carbon
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Drinking Water Inspectorate,
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Telephone : 020 7944 5956 - Facsimile : 020 7944 5969
E-mail: dwi_enquiries@detr.gov.uk
Published 11 July 2001
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