Water treatment chemicals and filter media used for the preparation of drinking water by water suppliers in the UK must be show to comply with the European Standards published as the BS:EN series. This is a requirement of the Drinking Water Inspectorate (Regulation 25 Letter 11/2000).

The standards specify the purity criteria for chemicals in terms of the contents of active ingredient and impurities and by-products. The same general layout has been used for standards for all chemicals. This covers:
   Identification;
   Physical and chemical properties;
   Purity criteria;
   Test methods;
   Labelling,
   Transportation and storage; and
   Informative

material relating to product manufacture, use in water treatment and emergency procedures. Similarly, a common layout has been adopted for inorganic supporting and filtering materials. Currently, over 80 standards have been produced and published as BS:ENs. A few remaining standards are in the final stages of preparation.

Treatment chemicals and filter media for use by water undertakers not covered by European Standards require Regulation 31 approval for use in the UK.

Copies of these standards can be obtained from BSi.

For further information on these standards please contact Mr Peter Jackson.


Number	Title

BS EN 878:2004	Chemicals used for treatment of water intended for human consumption. Aluminium sulfate
BS EN 881:2004	Chemicals used for treatment of water intended for human consumption. Aluminium chloride (monomeric), aluminium chloride hydroxide (monomeric) and aluminium chloride hydroxide sulfate (monomeric)
BS EN 882:2004	Chemicals used for treatment of water intended for human consumption. Sodium aluminate
BS EN 883:2004	Chemicals used for treatment of water intended for human consumption. Polyaluminium chloride hydroxide and polyaluminium chloride hydroxide sulfate
BS EN 885:2004	Chemicals used for treatment of water intended for human consumption. Polyaluminium chloride hydroxide silicate
BS EN 886:2004	Chemicals used for treatment of water intended for human consumption. Polyaluminium hydroxide silicate sulfate
BS EN 887:2004	Chemicals used for treatment of water intended for human consumption. Aluminium iron (III) sulfate
BS EN 888:2004	Chemicals used for treatment of water intended for human consumption. Iron (III) chloride
BS EN 889:2004	Chemicals used for treatment of water intended for human consumption. Iron (II) sulfate
BS EN 890:2004	Chemicals used for treatment of water intended for human consumption. Iron (III) sulfate liquid
BS EN 891:2004	Chemicals used for treatment of water intended for human consumption. Iron (III) chloride sulfate
BS EN 896:1999	Chemicals used for treatment of water intended for human consumption. Sodium hydroxide
BS EN 897:1999	Chemicals used for treatment of water intended for human consumption. Sodium carbonate
BS EN 898:1998	Chemicals used for treatment of water intended for human consumption. Sodium hydrogen carbonate
BS EN 899:2003	Chemicals used for treatment of water intended for human consumption. Sulfuric acid
BS EN 900:2000	Chemicals used for treatment of water intended for human consumption. Calcium hypochlorite
BS EN 901:2000	Chemicals used for treatment of water intended for human consumption. Sodium hypochlorite
BS EN 902:2000	Chemicals used for treatment of water intended for human consumption. Hydrogen peroxide
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)
BS EN 936:1998	Chemicals used for treatment of water intended for human consumption. Carbon dioxide
BS EN 937:1999	Chemicals used for treatment of water intended for human consumption. Chlorine
BS EN 938:2000	Chemicals used for treatment of water intended for human consumption. Sodium chlorite
BS EN 939:2000	Chemicals used for treatment of water intended for human consumption. Hydrochloric acid
BS EN 973:2002	Chemicals used for treatment of water intended for human consumption. Sodium chloride for regeneration of ion exchangers
BS EN 974:2003	Chemicals used for treatment of water intended for human consumption. Phosphoric acid
BS EN 1017:1998	Chemicals used for treatment of water intended for human consumption. Half-burnt dolomite
BS EN 1018:1998	Chemicals used for treatment of water intended for human consumption. Calcium carbonate
BS EN 1019:1996	Chemicals used for treatment of water intended for human consumption. Sulfur dioxide
BS EN 1197:2000	Chemicals used for treatment of water intended for human consumption. Monozinc phosphate solution
BS EN 1198:1998	Chemicals used for treatment of water intended for human consumption. Sodium dihydrogen orthophosphate
BS EN 1199:1998	Chemicals used for treatment of water intended for human consumption. Disodium hydrogen orthophosphate
BS EN 1200:1998	Chemicals used for treatment of water intended for human consumption. Trisodium orthophosphate
BS EN 1201:1998	Chemicals used for treatment of water intended for human consumption. Monopotassium dihydrogen orthophosphate
BS EN 1202:1998	Chemicals used for treatment of water intended for human consumption. Dipotassium hydrogen orthophosphate
BS EN 1203:1998	Chemicals used for treatment of water intended for human consumption. Tripotassium orthophosphate
BS EN 1204:1998	Chemicals used for treatment of water intended for human consumption. Monocalcium phosphate
BS EN 1205:1998	Chemicals used for treatment of water intended for human consumption. Sodium acid pyrophosphate
BS EN 1206:1998	Chemicals used for treatment of water intended for human consumption. Tetrasodium pyrophosphate
BS EN 1207:1998	Chemicals used for treatment of water intended for human consumption. Tetrapotassium pyrophosphate
BS EN 1208:1998	Chemicals used for treatment of water intended for human consumption. Sodium calcium polyphosphate
BS EN 1209:2003	Chemicals used for treatment of water intended for human consumption. Sodium silicate
BS EN 1210:1998	Chemicals used for treatment of water intended for human consumption. Sodium tripolyphosphate
BS EN 1211:1998	Chemicals used for treatment of water intended for human consumption. Potassium tripolyphosphate
BS EN 12120:1999	Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfite
BS EN 12121:1999	Chemicals used for treatment of water intended for human consumption. Sodium disulfite
BS EN 12122:1999	Chemicals used for treatment of water intended for human consumption. Ammonia solution
BS EN 12123:1999	Chemicals used for treatment of water intended for human consumption. Ammonium sulfate
BS EN 12124:1999	Chemicals used for treatment of water intended for human consumption. Sodium sulfite
BS EN 12125:1999	Chemicals used for treatment of water intended for human consumption. Sodium thiosulfate
BS EN 12126:1999	Chemicals used for treatment of water intended for human consumption. Liquefied ammonia
BS EN 1212:1998	Chemicals used for treatment of water intended for human consumption. Sodium polyphosphate
BS EN 12173:1999	Chemicals used for treatment of water intended for human consumption. Sodium fluoride
BS EN 12174:2001	Chemicals used for treatment of water intended for human consumption. Sodium hexafluorosilicate
BS EN 12175:2001	Chemicals used for treatment of water intended for human consumption. Hexafluorosilicic acid
BS EN 12386:1999	Chemicals used for treatment of water intended for human consumption. Copper sulfate
BS EN 12485:2001	Chemicals used for treatment of water intended for human consumption. Calcium carbonate, high-calcium lime and half-burnt dolomite. Test methods
BS EN 12518:2000	Chemicals used for treatment of water intended for human consumption. High-calcium lime
BS EN 12671:2000	Chemicals used for treatment of water intended for human consumption. Chlorine dioxide
BS EN 12672:2000	Chemicals used for treatment of water intended for human consumption. Potassium permanganate
BS EN 12678:2000	Chemicals used for treatment of water intended for human consumption. Potassium peroxomonosulfate
BS EN 1278:1999	Chemicals used for treatment of water intended for human consumption. Ozone
BS EN 12876:2000	Chemicals used for treatment of water intended for human consumption. Oxygen
BS EN 12901:1999	Products used for treatment of water intended for human consumption. Inorganic supporting and filtering materials. Definitions
BS EN 12902:2004	Products used for treatment of water intended for human consumption. Inorganic supporting and filtering materials. Methods of test
BS EN 12903:2003	Products used for the treatment of water intended for human consumption. Powdered activated carbon
BS EN 12904:1999	Products used for treatment of water intended for human consumption. Sand and gravel
BS EN 12905:1999	Products used for treatment of water intended for human consumption. Expanded aluminosilicate
BS EN 12906:1999	Products used for treatment of water intended for human consumption. Pumice
BS EN 12907:2003	Products used for the treatment of water intended for human consumption. Pyrolyzed coal material
BS EN 12909:1999	Products used for treatment of water intended for human consumption. Anthracite
BS EN 12910:1999	Products used for treatment of water intended for human consumption. Garnet
BS EN 12911:1999	Products used for treatment of water intended for human consumption. Manganese greensand
BS EN 12912:1999	Products used for treatment of water intended for human consumption. Barite
BS EN 12913:1999	Products used for treatment of water intended for human consumption. Powdered diatomaceous earth
BS EN 12914:1999	Products used for treatment of water intended for human consumption. Powdered perlite
BS EN 12915-1:2003	Products used for the treatment of water intended for human consumption. Granular activated carbon. Virgin granular activated carbon
BS EN 12915-2:2003	Products used for the treatment of water intended for human consumption. Granular activated carbon. Reactivated granular activated carbon
BS EN 12926:2000	Chemicals used for treatment of water intended for human consumption. Sodium peroxodisulfate
BS EN 12931:2000	Chemicals used for treatment of water intended for human consumption. Chemicals for emergency use. Sodium dichloroisocyanurate, anhydrous
BS EN 12932:2000	Chemicals used for treatment of water intended for human consumption. Chemicals for emergency use. Sodium dichloroisocyanurate, dihydrate
BS EN 12933:2000	Chemicals used for treatment of water intended for human consumption. Chemicals for emergency use. Trichloroisocyanuric acid
BS EN 1302:1999	Chemicals used for treatment of water intended for human consumption. Aluminium-based coagulants. Analytical methods
BS EN 13176:2000	Chemicals used for treatment of water intended for human consumption. Ethanol
BS EN 13177:2002	Chemicals used for treatment of water intended for human consumption. Methanol
BS EN 13194:2000	Chemicals used for treatment of water intended for human consumption. Acetic acid
BS EN 13752:2003	Products used for treatment of water intended for human consumption. Manganese dioxide
BS EN 13753:2002	Products used for treatment of water intended for human consumption. Granular activated alumina
BS EN 13754:2003	Products used for treatment of water intended for human consumption. Bentonite
BS EN 1405:1998	Chemicals used for treatment of water intended for human consumption. Sodium alginate
BS EN 1406:1998	Chemicals used for treatment of water intended for human consumption. Modified starches
BS EN 1407:1998	Chemicals used for treatment of water intended for human consumption. Anionic and non-ionic polyacrylamides
BS EN 1408:1998	Chemicals used for treatment of water intended for human consumption. Poly diallyldimethylammonium chloride)
BS EN 1409:1998	Chemicals used for treatment of water intended for human consumption. Polyamines
BS EN 1410:1998	Chemicals used for treatment of water intended for human consumption. Cationic polyacrylamides
BS EN 1421:1996	Chemicals used for treatment of water intended for human consumption. Ammonium chloride
BS EN 14368:2003	Products used for treatment of water intended for human consumption. Manganese dioxide coated limestone
BS EN 14369:2003	Products used for treatment of water intended for human consumption. Iron-coated granular activated alumina
BS EN 14456:2004	Products used for treatment of water intended for human consumption. Bone charcoal
BS EN 14664:2004	Chemicals used for treatment of water intended for human consumption. Iron (III) sulfate, solid
PD CR 14269:2001	Chemicals used for treatment of water intended for human consumption. Guidelines for the purchase of products

Last Updated: 04 January 2010

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