Approved products for use in the UK's public water supply

13194: 2000

Acetic acid

None

1302: 1999

Aluminium based co-agulants - Analytical methods

None

881: 2004

Aluminium chloride, aluminium chloride hydroxide and aluminium chloride hydroxide sulfate (monomeric)

None

935: 2004

Aluminium iron (III) chloride (monomer) and aluminium iron (III) chloride hydroxide (monomeric)

None

887: 2004

Aluminium iron (III) sulfate

None

878: 2004

Aluminium sulfate

None

12122: 2005

Ammonia solution

None

12123: 2005

Ammonium sulfate

None

1421: 2005

Ammonium chloride

None

1407: 2008

Anionic and nonionic polyacrylamides

(i) no batch must contain more than 0.020% of free acrylamide monomer based on the active ingredient content;

(ii) the dose must average no more than 0.25 mg l ^-1 and never exceed 0.50 mg l ^-1 of the active ingredient;

(iii) an upper limit for the content of free acrylamide monomer must be stated by the supplier for every batch;

(iv) the method used for the analysis for free acrylamide monomer is entitled 'Determination of Acrylamide' published in the series 'Methods for the Examination of Waters and Associated Materials' by the Environment Agency.

1018: 2006

Calcium carbonate

None

12485: 2001

Calcium carbonate, high-calcium lime and half burnt dolomite - Test methods

None

900: 2007

Calcium hypochlorite

None

1204: 2005

Calcium tetrahydrogen bis(orthophosphate)

None

936: 2006

Carbon dioxide

None

1410: 2008

Cationic polyacrylamides

(i) no batch must contain more than 0.020% of free acrylamide monomer based on the active ingredient content;

(ii) the dose must average no more than 0.25 mg l ^-1 and never exceed 0.50 mg l ^-1 of the active ingredient;

(iii) an upper limit for the content of free acrylamide monomer must be stated by the supplier for every batch; and

(iv) the method used for the analysis for free acrylamide monomer is entitled 'Determination of Acrylamide' published in the series 'Methods for the Examination of Waters and Associated Materials' by the Environment Agency.

937: 1999

Chlorine

None

12671: 2000

Chlorine dioxide

The combined concentration of chlorine dioxide, chlorite and chlorate should not exceed 0.5mg l ^-1 as chlorine dioxide in the water entering supply.

12386: 2005

Copper sulfate

None

1202: 2005

Dipotassium hydrogen orthophosphate

None

1199: 2005

Disodium hydrogen orthophosphate

None

1205: 2005

Disodium dihydrogen pyrophosphate

None

13176: 2000

Ethanol

None

1017: 2008

Half-burnt dolomite

None

12175: 2006

Hexafluorosilicic acid

None

12518: 2008

High-calcium lime

None

939: 2000

Hydrochloric acid

Permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from the relevant water service company or Environment Agency, in England and Wales or Scottish Environment Protection Agency ( SEPA) in Scotland as appropriate.

902: 2000

Hydrogen peroxide

Permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from the relevant water service company or Environment Agency in England and Wales or Scottish Environment Protection Agency ( SEPA) in Scotland , as appropriate.

Products conforming to EN902 shall not contain stabilising or activation agents. If a product contains such agents it requires approval under the relevant regulations .

Prior to introduction into supply all residual hydrogen peroxide must be demonstrably removed/destroyed

888: 2004

Iron(III) chloride

None

891: 2004

Iron(III) chloride sulfate

None

15029:2006

Iron (III) hydroxide oxide

Under consideration - please seek advice from DWI

889: 2004

Iron(II) sulfate

None

890: 2004

Iron(III) sulphate liquid

None

14664: 2004

Iron(III) sulphate, solid

None

12126: 2005

Liquefied ammonia

None

13177: 2002

Methanol

None

1406: 1998

Modified starches

The dose must not exceed 5 mg l ^-1 of active ingredient.

1204: 2005

Monocalcium phosphate

None

1201: 2005

Monopotassium hydrogen orthophosphate

None

1197: 2006

Monozinc phosphate solution

None

12876: 2000

Oxygen

None

1278: 1999

Ozone

None

974: 2003

Phosphoric acid

Permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from the relevant water service company or Environment Agency in England and Wales or Scottish Environment Protection Agency ( SEPA) in Scotland, as appropriate.

15040:2006

Phosphonic acids and salts

Under consideration - please seek advice from DWI

1408: 2008

Poly(diallyldimethylammonium chloride)

The dose used must not exceed 10 mg l ^-1 of active ingredient.

883: 2004

Polyaluminium chloride hydroxide and polyaluminium chloride hydroxide sulfate

None

885: 2004

Polyaluminium chloride hydroxide silicate

None

886: 2004

Polyaluminium hydroxide silicate sulfate

None

1409: 2008

Polyamines

(i) The average dose should be 2.5 mg l ^-1 and never exceed 5 mg l ^-1 of active ingredient;

(ii) no batch must contain more than 40 mg of 3-monochloropropane 1,2-diol per kg of active ingredient;

(iii) the analytical system used for determining the batch content must have a limit of detection no greater than 4 mg kg ^-1 and a maximum total standard deviation no greater than 4 mg kg ^-1 at 40 mg kg ^-1. Both estimates must have at least 10 degrees of freedom and have been determined from batches of analyses carried out on not less than five separate days; and

(iv) the supplier must state for every batch an upper limit for the content of 3-monochloropropane 1,2-diol.

15039:2006

Polycarboxylic acids and salts

Under consideration - please seek advice from DWI

15041:2006

Polyphosphates

Under consideration - please seek advice from DWI

1201: 2005

Potassium dihydrogen orthophosphate

None

12672: 2000

Potassium permanganate

None

12678: 2000

Potassium peroxomonosulfate

None

1211: 2005

Potassium tripolyphosphate

None

15030:2006

Silver salts

On advice from HSE - these compounds may not be used in contact with water intended for human consumption.

1205: 2005

Sodium acid pyrophosphate

None

1405: 1998

Sodium alginate

the dose used must not exceed 0.5 mg l ^-1 of active ingredient

882: 2004

Sodium aluminate

None

1208: 2005

Sodium calcium polyphosphate

None

897: 2005

Sodium carbonate

None

15028:2006

Sodium chlorate

Under consideration - please seek advice from DWI

14805:2008

Sodium chloride for OSEC

Under consideration - please seek advice from DWI

973: 2002

Sodium chloride for regeneration of ion exchangers

None

938: 2000

Sodium chlorite

(i) the dose must be such that the combined concentration of chlorine dioxide, chlorite and chlorate does not exceed 0.5 mg l ^-1 as chlorine dioxide in water potentially entering supply; and

(ii) permission or consent for disposal of any wastewater generated to a sewer or water course must be obtained from the relevant water service company or Environment Agency in England and Wales or Scottish Environment Protection Agency ( SEPA) in Scotland, as appropriate.

12931: 2000

12932: 2000

12933: 2000

Sodium dichloroisocyanurate, anhydrous

Sodium dichloroisocyanurate, dihydrate

Trichloroisocyanuric acid

Conditions if product is used as a cleaning agent:

(i) the dose must be such that the final concentration in the water used to wash installations does not exceed 1000 mg l ^-1 of free available chlorine;

(ii) that following cleaning and disinfection, the installation is flushed to ensure that the residual chlorine concentration is acceptable to consumers; and

(iii) permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from the relevant water service company or

Environment Agency in England and Wales or Scottish Environment Protection Agency ( SEPA) in Scotland, as appropriate.

Water companies should check with their suppliers to ensure that products to be cleaned and disinfected will not be adversely affected by the concentration of chlorine to be employed.

Conditions if product is used as an emergency disinfectant:

(i) where circumstances are such that the water being treated is not grossly contaminated and a controlled contact time of not less than 15 minutes between dosing and taking it into use can be maintained, not more than 10 mg l ^-1 of sodium dichloro-isocyanurate compound should be applied and not more than 1mg l ^-1 of free residual chlorine should be present at the end of the relevant contact time. It is recommended that consumers should be exposed to such waters containing chloro-isocyanurates for only as long as is required to restore

conventional treatment, or for no more than 90 days in any period of a year, whichever is applicable;

(ii) under circumstances where water sources may be grossly contaminated, to ensure inactivation of most likely harmful organisms, up to 20 mg l ^-1 sodium

dichloro-isocyanurate may be added, with a recommended contact time of 15 minutes before use. It is recommended that consumption of water dosed at this rate of treatment should be for only as long as is necessary before it is possible to effect control of the residual chlorine after contact to 1 mg l ^-1, and then to follow the requirements set out in condition (i); and

(iii) should it be necessary for specific groups of consumers to be exposed to water containing chloro-isocyanurates for periods greater than 90 days either continuously or in a year, it is recommended that independent medical advice be obtained from a person who is not under the control of the water undertaker.

1198: 2005

Sodium dihydrogen orthophosphate

None

12121: 2005

Sodium disulfite

None

12173: 2005

Sodium fluoride

None

12174: 2006

Sodium hexafluorosilicate

None

898: 2005

Sodium hydrogen carbonate

None

12120: 2005

Sodium hydrogen sulfite

None

896: 2005

Sodium hydroxide

None

901: 2007

Sodium hypochlorite

The method of use and the purity of these products shall be such that, in the case of water for public supply, the water so treated meets the requirements of the relevant regulations .

15482:2007

Sodium Permanganate

Under consideration - please seek advice from DWI

12926: 2000

Sodium peroxodisulfate

None

1212: 2005

Sodium polyphosphate

None

1209: 2003

Sodium silicate

None

12124: 2005

Sodium Sulfite

None

12125: 2005

Sodium thiosulfate

None

1210: 2005

Sodium tripolyphosphate

None

1019: 2005

Sulfur dioxide

None

899: 2003

Sulfuric acid

None

1207: 2005

Tetrapotassium pyrophosphate

None

1206: 2005

Tetrasodium pyrophosphate

None

1203: 2005

Tripotassium orthophosphate

None

1200: 2005

Trisodium orthophosphate

None

12909: 2005

Anthracite

None

12912: 2005

Barite

None

13754: 2003

Bentonite

None

14456: 2004

Bone charcoal

The contact bed containing the product must be adequately back-washed (until backwash water is clear of fines) to remove any readily leachable materials before connection to the supply.

12905: 2005

Expanded aluminosilicate

None

12910: 2005

Garnet

None

13753: 2002

12915 - 1: 2003

12915 - 2: 2003

12907: 2003

Granular activated alumina

Granular activated carbon. Part 1: Virgin GAC

Granular activated carbon. Part 2: Reactivated GAC

Pyrolised coal material

(i) the contact bed containing the product must be adequately back-washed (until backwash water is clear of fines) to remove any readily leachable materials before

connection to the supply; and

(ii) before connection to the supply, the water undertaker or their appointed agent must carry out tests on the filtrate water to establish that use of the contact bed will

not cause any adverse effect on the quality of water to be put into supply. These tests must include measurement of chlorine demand and a qualitative odour assessment, as well as tests to confirm that leaching of activating agents or any other substance used in the preparation or regeneration of the product will not cause a contravention of the standards prescribed in the relevant regulations .

12901: 1999

Inorganic supporting and filtering materials - Definitions

None

12902: 2004

Inorganic supporting and filtering materials - Methods of test

None

14369: 2003

Iron-coated granular activated alumina

None

13752: 2003

Manganese dioxide

None

12911: 2006

Manganese greensand

None

12903: 2003

Powered activated carbon

The dose must not exceed 100 mg l ^-1.

12913: 2005

Powdered diatomaceous earth

None

12914: 2005

Powdered perlite

None

12906: 2005

Pumice

None

12904: 2005

Silica sand and silica gravel

None

1420-1: 1999

Influence of organic materials on water intended for human consumption - Determination of odour and flavour assessment of water in piping systems

12873-1: 2003

Influence of materials on water intended for human consumption - Influence due to migration - Part 1: Test method for non-metallic and non-cementitious factory made products

12873-2: 2005

Influence of materials on water intended for human consumption - Influence due to migration - Part 2: Test method for non-metallic and non-cementitious site - applied materials

12873-3: 2006

Influence of materials on water intended for human consumption - Influence due to migration - Part 3: Test method for ion exchange and adsorbent resins

12873-4: 2006

Influence of materials on water intended for human consumption - Influence due to migration - Part 4: Test method for water treatment membranes

13052-1: 2001

Influence of materials on water intended for human consumption - Organic materials - Determination of colour and turbidity of water in piping systems - Part 1: Test method

14395-1: 2004

Influence of materials on water intended for human consumption - Organoleptic assessment of water in storage systems - Part 1: Test method

14718: 2006

Influence of organic materials on water intended for human consumption - Determination of the chlorine demand - Test Method

14944-1: 2006

Influence of factory made cementitious products on organoleptic parameters - Test methods - Part 1: Influence of factory made cementitious products on organoleptic parameters

14944-3: 2007

Influence of factory made cementitious products on organoleptic parameters - Test methods - Part 3: Migration of substances from factory-made cementitious products

15664: 2008

Influence of metallic materials on water intended for human consumption - Dynamic rig test for assessment of metal release - Part 1: Design and operation

Abietic acid salts

Air entrainer

Aluminates, sodium or potassium

Accelerator

Aluminium hydroxides, amorphic

Accelerator

Anionic surfactants

Air entrainer

Butyl stearate

Waterproofer/ water repellent

Carbonate, sodium or potassium

Accelerator

Cellulose ethers

Stabiliser/pumping aid

Citric acid

Retarder

Decanoate, sodium

Air entrainer

Dimethylsiloxane, poly-

Defoamer agent for plasticisers/ superplasticisers

Dodecyl benzene sulphonate, sodium

Air entrainer

Fatty acid soaps

Waterproofer/ water repellent

Formate, calcium

Accelerator

Gluconic and Heptonic acid salts

Retarder/ water reducer/ plasticiser

Lauryl ether sulphate, sodium

Air entrainer

Lignosulphonates

Water reducer/ plasticiser

Mono and di saccharides, eg sucrose, xylose

Retarder

Nitrate, calcium, sodium or potassium

Accelerator

Oleic acid and salts

Waterproofer/ water repellent

Oxalate, lithium

Accelerator

Polysaccharides

Water reducer/ plasticiser

Phosphate, dibutyl

Defoamer agent for plasticisers/ superplasticisers

Phosphate, tributyl

Defoamer agent for plasticisers/ superplasticisers

Phosphates (inorganic)

Retarder

Phosphonates (organic)

Retarder

Polycarboxylate/ polyether copolymer

Superplasticiser

Silicates, sodium

Accelerator

Starch ethers

Stabiliser/pumping aid

Stearate salts

Waterproofer/ water repellent

Sulphonated melamine formaldehyde condensate

Superplasticiser

Sulphonated naphthalene formaldehyde condensate

Superplasticiser

Tartaric acid

Retarder

Thiocyanate, sodium

Accelerator

Triethanolamine

Water reducer/ plasticiser