BSEN | Chemical | Additional National Conditions of Use |
|---|
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: 1999 | Ammonia solution | None |
12123: 2005 | Ammonium sulfate | None |
1421: 2005 | Ammonium chloride | None |
1407: 1998 | 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: 1998 | Calcium carbonate | None |
12485: 2001 | Calcium carbonate, high-calcium lime and half burnt dolomite - Test methods | None |
900: 2000 | Calcium hypochlorite | None |
1204: 2005 | Calcium tetrahydrogen bis(orthophosphate) | None |
936: 1998 | Carbon dioxide | None |
1410: 1998 | 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: 1999 | 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: 1998 | Half-burnt dolomite | None |
12175: 2001 | Hexafluorosilicic acid | None |
12518: 2000 | 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 Scottish Water or Scottish Environment Protection Agency, as appropriate. |
902: 2000 | Hydrogen peroxide | Permission or consent for disposal of any wastewater generated to a sewer or watercourse must be obtained from Scottish Water or Sottish Environment Protection Agency, as appropriate. Current approval for the use of products containing silver salts in relation to emergency disinfection of water intended for human consumption is subject to the following conditions of approval: - the concentration of silver in the water does not exceed 80 µg l -1; and
- consumers are exposed to water containing silver for only as long as necessary to restore conventional treatment, and for no more than a total of 90 days in any period of a year.
These conditions ensure that there is only a limited exposure of the consumer to silver. |
888: 2004 | Iron(III) chloride | None |
891: 1994 | Iron(III) chloride sulfate | None |
889: 2004 | Iron(II) sulfate | None |
890: 2004 | Iron(III) sulphate liquid | None |
14664: 2004 | Iron(III) sulphate, solid | None |
12126: 1999 | Liquefied ammonia | None |
13177: 2002 | Methanol | None |
1406: 1998 | Modified starches | The dose must not exceed 5 mg l -1 of active ingredient. |
1204: 1998 | Monocalcium phosphate | None |
1201: 1998 | Monopotassium hydrogen orthophosphate | None |
1197: 2000 | 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 Scottish Water or Scottish Environment Protection Agency, as appropriate. |
1408: 1998 | 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: 1998 | 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. |
1201: 2005 | Potassium dihydrogen orthophosphate | None |
12672: 2000 | Potassium permanganate | None |
12678: 2000 | Potassium peroxomonosulfate | None |
1211: 2005 | Potassium tripolyphosphate | None |
1205: 1998 | 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: 1999 | Sodium carbonate | None |
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 Scottish Water or Scottish Environment Protection Agency, 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 Scottish Water or Scottish Environment Protection Agency, as appropriate. Scottish Water should check with its 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 Scottish Water. |
1198: 2005 | Sodium dihydrogen orthophosphate | None |
12121: 1999 | Sodium disulfite | None |
12173: 2005 | Sodium fluoride | None |
12174: 2001 | Sodium hexafluorosilicate | None |
898: 1998 | Sodium hydrogen carbonate | None |
12120: 1999 | Sodium hydrogen sulfite | None |
896: 1999 | Sodium hydroxide | None |
901: 2000 | 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 Water Supply (Water Quality) (Scotland) Regulations 2001. |
12926: 2000 | Sodium peroxodisulfate | None |
1212: 2005 | Sodium polyphosphate | None |
1209: 1998 | Sodium silicate | None |
12124: 1999 | Sodium Sulfite | None |
12125: 1999 | Sodium thiosulfate | None |
1210: 2005 | Sodium tripolyphosphate | None |
1019: 1996 | 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 |
For all of the products listed the following general national condition of use applies;
BSEN | Title | Additional National Conditions of Use |
12909: 1999 | 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: 1999 | Expanded aluminosilicate | None |
12910: 1999 | 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, Scottish Water 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 Water Supply (Water Quality)(Scotland) Regulations 2001. |
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 |
13752: 2003 | Manganese dioxide | None |
12911: 1999 | 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: 1999 | Pumice | None |
12904: 2005 | Silica sand and silica gravel | None |
Regulation 25 letters 1/2001 and 4/2003 gave details of the arrangements for authorisation of civil engineering use of concrete in water retaining structures in treatment and distribution systems. The following list gives the chemical identity of admixture components considered acceptable for use in cement admixtures for use in concrete in contact with water in water retaining structures, providing the admixture is not added to the concrete at a concentration exceeding the manufacturer's recommended dose.
Admixture component | Used as |
|---|
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 acid salts | Water reducer/ plasticiser |
Heptonic acid salts | Water reducer/ plasticiser |
Lauryl ether sulphate, sodium | Air entrainer |
Lignosulphonates | Water reducer/ plasticiser |
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 |
Sucrose | Retarder |
Sulphonated melamine formaldehyde condensate | Superplasticiser |
Sulphonated naphthalene formaldehyde condensate | Superplasticiser |
Tartaric acid | Retarder |
Thiocyanate, sodium | Accelerator |
Triethanolamine | Water reducer/ plasticiser |