British Standards Institution - Committee

If you have difficulty in submitting comments on draft standards you can use a commenting template and email it to admin.start@bsigroup.com. The commenting template can be found here.

B/504/10 - Chemicals and filtering media for water treatment

Sector: Construction

Categories: Water. Drinking | Chemical technology | Chemicals. Water purification | Water. Industrial use | Salts | Chemical industry. Products | Water quality | Chemical analysis | Water heating | Water supply | Aldehydes and ketones | Explosives. Pyrotechnics and fireworks | Environment. Health protection. Safety | Food industry. Plants and equipment

Overview: Under the direction of the Standards Policy and Strategy Committee provides the UK input to CEN/TC 164/WG 9

Committee standards activity

In Progress (18)

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS EN 936	Chemicals used for treatment of water intended for human consumption - Carbon dioxide Categories: Chemicals. Water purification Public comment begins : 2021-02-25	Public comment
BS EN 891	Chemicals used for treatment of water intended for human consumption - Iron (III) chloride sulfate Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 890	Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 889	Chemicals used for treatment of water intended for human consumption - Iron (II) sulfate Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 888	Chemicals used for treatment of water intended for human consumption - Iron (III) chloride Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 887	Chemicals used for treatment of water intended for human consumption - Aluminium iron (III) sulfate Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 882	Chemicals used for treatment of water intended for human consumption - Sodium aluminate Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 878	Chemicals used for treatment of water intended for human consumption - Aluminium sulfate Categories: Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 18268	Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Citric Acid Categories: Water. Drinking \| Chemicals. Water purification Comment resolution begins : 2026-10-14	Comment resolution
BS EN 15040	Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Phosphonic acids and salts Categories: Unclassified documents Drafting begins : 2021-09-11	Drafting

Published (141)

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CR 14269:2001	Chemicals used for treatment of water intended for human consumption. Guidelines for the purchase of products Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2002-05-29	Published standard
BS EN 974:2003	Chemicals used for treatment of water intended for human consumption. Phosphoric acid Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2004-02-09	Published standard
BS EN 973:2009	Chemicals used for treatment of water intended for human consumption. Sodium chloride for regeneration of ion exchangers Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2009-11-25	Published standard
BS EN 939:2016	Chemicals used for treatment of water intended for human consumption. Hydrochloric acid Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2016-06-01	Published standard
BS EN 938:2016	Chemicals used for treatment of water intended for human consumption. Sodium chlorite Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2016-06-01	Published standard
BS EN 937:2016	Chemicals used for treatment of water intended for human consumption. Chlorine Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2016-08-16	Published standard
BS EN 936:2013	Chemicals used for treatment of water intended for human consumption. Carbon dioxide Categories: Chemicals. Water purification Published standard begins : 2013-12-13	Published standard
BS EN 935:2004	Chemicals used for treatment of water intended for human consumption. Aluminium iron(III) chloride (monomeric) and aluminium iron(III) chloride hydroxide (monomeric) Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2004-12-02	Published standard
BS EN 902:2016	Chemicals used for treatment of water intended for human consumption. Hydrogen peroxide Categories: Water. Drinking \| Chemicals. Water purification Published standard begins : 2016-06-01	Published standard
BS EN 901:2024	Chemicals used for treatment of water intended for human consumption. Sodium hypochlorite Categories: Chemicals. Water purification Published standard begins : 2025-01-13	Published standard

Withdrawn (172)

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
WD/AMD14733 (TO BSEN973 : 2002)	BSEN973 : 2002 Chemicals used for treatment of water intended for human consumption - Sodium chloride for regeneration of ion exchangers Categories: Chemicals. Water purification Withdrawn begins : 2009-11-25	Withdrawn
BS EN 973:2002	Chemicals used for treatment of water intended for human consumption. Sodium chloride for regeneration of ion exchangers Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2009-11-25	Withdrawn
BS EN 939:2009	Chemicals used for treatment of water intended for human consumption. Hydrochloric acid Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2016-06-01	Withdrawn
BS EN 939:2000	Chemicals used for treatment of water intended for human consumption. Hydrochloric acid Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2009-06-18	Withdrawn
BS EN 938:2009	Chemicals used for treatment of water intended for human consumption. Sodium chlorite Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2016-06-01	Withdrawn
BS EN 938:2000	Chemicals used for treatment of water intended for human consumption. Sodium chlorite Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2009-06-18	Withdrawn
BS EN 937:2009	Chemicals used for treatment of water intended for human consumption. Chlorine Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2016-08-16	Withdrawn
BS EN 937:1999	Chemicals used for treatment of water intended for human consumption. Chlorine Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2009-11-25	Withdrawn
BS EN 936:2006	Chemicals used for treatment of water intended for human consumption. Carbon dioxide Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2013-12-13	Withdrawn
BS EN 935:2001	Chemicals used for treatment of water intended for human consumption. Aluminium iron (III) chloride (monomeric) and aluminium iron (III) chloride hydroxide (monomeric) Categories: Water. Drinking \| Chemicals. Water purification Withdrawn begins : 2004-12-02	Withdrawn

Message Committee Become a committee member

Committee members

Nominating organizations

16.10.20 name changed from Dept. of the Environment for Northern Ireland
British Association for Chemical Specialities
Committee Manager
D E F R A - Drinking Water Inspectorate
Department of Agriculture, Environment & Rural Affairs
Dwr Cymru Welsh Water
MPA Lime
S P A T A - Swimming Pool and Allied Trades Association Ltd
Water UK

Liaisons with other committees

Individual Capacity - Manufacturer of activated carbon products
Individual capacity – Analytical expert
Individual Capacity – Citric Acid Expert
Individual Capacity – Glass filtering media
Liaison - SW/136/8
UK Expert – CEN/TC 164/WG 16

BSI roles

Committee Chair