Last updated 7 th December 2007
Uncontrolled If Printed
ISBN 978 0 7559 1638 2 (Web only publication)
This document is also available in pdf format (296k)
Contents
INTRODUCTION
1. Introduction
The Approval Process
Basis of Approval
Review of Approved Products
The Annual List of Approved Products
THE ANNUAL LIST OF APPROVED SUBSTANCES AND PRODUCTS UNDER REGULATION 31
INTRODUCTION TO THE LIST OF APPROVED PRODUCTS
PART A - CHEMICALS AND FILTER MEDIA
A. 1 Flocculants and Coagulants
A.1.1 Products based on tannin
A.1.2 Products based on aluminium and iron
A.1.3 Products based on iron
A. 2 Adsorbents
A. 3 Ion Exchange Resins Systems
A.3.1 Ion exchange resins
A.3.2 Ion exchange resin based processes
A. 4 Disinfestation, Disinfection or Cleaning Agents of Waterworks Apparatus and Distribution Systems
A. 5 Disinfection or Cleaning Agents of Membranes
A. 6 Disinfectants for Emergency Use
A. 7 Products Based on Traditional Chemicals
A.7.1 Traditional Chemicals
A.7.2 On-site electrolytic generation of chlorine ( OSEC)
A. 8 Disinfestation Agents
A. 9 Other Chemicals
A.10 Filter Media
PART B - PRODUCTS USED FOR THE CONVEYANCE OF WATER
B. 1 Pipes
B.1.1 Polyethylene ( PE) pipes
B.1.2 Barrier and Laminated pipes
B.1.3 Polyvinylchloride ( PVC) pipes
B.1.4 Acrylonitrile-butadiene-styrene copolymer ( ABS)
B.1.5 Polyethylene terephthalate ( PET)
B.1.6 Glass reinforced plastic ( GRP) pipes
B.1.7 Cement mortar lined pipes
B.1.8 Pipes coated with factory applied nylon resins
B.1.9 Pipes coated with factory applied epoxy resin
B.1.10 Stainless steel pipes
B. 2 Products for Emergency Use
B.2.1 Hoses
B.2.2 Bowsers/tanks
B.2.3 Liner bags
B.2.4 Treatment chemicals
PART C - LINING /COATINGS AND SEALANT & REPAIR MATERIALS
C.1 In-situ Installed (tubular) pipe linings
C.2 In-situ applied Pipe Coatings
C.2.1 Coatings based on epoxy resins
C.2.2 Coatings based on polyurethane
C.3 Site applied coatings for water retaining structures
C.3.1 Coatings based on epoxy resins
C.3.2 Coatings based on polyurethane
C.3.3 Coatings based on ebonite
C.4 Flexible covers and linings for water retaining structures
C.5 Cementitious coatings
C.6 Sealant & Repair Materials
PART D - MEMBRANE AND FILTRATION SYSTEMS
D.1 Membrane and Filtration Elements/Systems
D.2 Vessels and Containers for Membrane and Filtration Elements
D.3 Electrodialysis Water Treatment Units
PART E - OTHER WATER TREATMENT WORKS INSTALLATIONS
E.1 Tanks
E.2 Underdrains
E.3 Pressure vessels
E.4 Other Products used for the treatment of water
ANNEXES
Annex 1 Recent Changes to Approvals and Amendments to the List of Approved Products
1.1 Modified conditions of approval
1.2 List of products refused approval
1.3 Prohibition of use of substances and products
1.4 Revocation of approval
1.5 Approval of processes
1.6 Deletions from the list of approved products
1.6.1 Products deleted because they are no longer supplied or their approval has lapsed
1.6.2 Products deleted because they are covered by a BSEN
1.7 Changes in ownership or designation of approved products
1.7.1 Change in company name or ownership
1.7.2 Change in product designation
1.8 Additional Products approved since December 2006 (which have been consolidated into the main text of this list)
Annex 2 List of Relevant European Standards and authorised Components
2.1 British standards ( BSEN) for chemicals used for treatment of water
2.2 British Standards ( BSEN) for inorganic supporting and filtering materials
2.3 British Standards ( BSEN) on the influence of organic Materials on water
2.4 List of Authorised Cement Admixtures
Annex 3 Manufacturers' and suppliers' addresses
Errors and corrections:
Please email us if you find any errors or if corrections are needed
Email: reg31.enquiries@defra.gsi.gov.uk
