| Statutory Instrument | |
 | |
| Citation | SI 1989/3184 |
|---|---|
| Text of the Water Supply (Water Quality) Regulations 1989 as in force today (including any amendments) within the United Kingdom, from legislation.gov.uk. | |
The Water Supply Water Quality Regulations 1989[1] (SI No. 1147) are regulations imposed on the England and Wales Water industry by statutory instrument. The regulations were signed jointly by Peter Walker, Secretary of State for Wales and Michael Howard who, as Minister for Water and Planning, was responsible for implementing water privatization in England and Wales during 1988/89. Most of the measures came into force on 1 September 1989, and the rest on 1 January 1990. The regulations have been superseded by several later instruments.
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Transcription
Revocation
The 1989 regulations were revoked in England by the Water Supply (Water Quality) Regulations (SI 2000/3184) and in Wales by the Water Supply (Water Quality) Regulations (SI 2001/3911).[2][3] Further changes were made by the Water Industry Act 1991.[4]
Wholesomeness
Schedule 2 of the regulations prescribes concentrations for substances that affect wholesomeness.
Table A
| Table A Parameters | Units of Measurement | Value (Max) |
|---|---|---|
| Aluminium | μg Al/litre (l) | 200 |
| Ammonium (ammonia and ammonium ions) | mg NH4/litre | 0.5 |
| Colour | mg/1 Pt/Co scale | 20 |
| Copper | μg Cu/L | 3000 |
| Dissolved or emulsified hydrocarbons ( extract with petroleum ether); mineral oils | μg/L | 10 |
| Dry residues | mg/l | 1500 dry at 180 °C |
| Fluoride | μg F/L | 1500 |
| Hydrogen ion | pH value | 9.5 - 5.5(min) |
| Iron | μg Fe/L | 200 |
| Kjeldahl nitrogen | mg N/L | 1 |
| Magnesium | mg Mg/L | 50 |
| Manganese | μg Mn/L | 50 |
| Nitrate | mg NO3/litre | 50 |
| Nitrite | mg NO2/litre | 0.1 |
| Odour (including hydrogen sulphide) | Dilution number | 3 at 25 °C |
| Oxidizability (permanganate value) | mg O2/litre | 5 |
| Phenols | μg C6H5OH/litre | 0.5 |
| Phosphorus | μg P/L | 2200 |
| Potassium | mg K/L | 12 |
| Silver | μg Ag/L | 10 (80 If used in treatment process) |
| Sodium | mg Na/L | 150(*) |
| Sulphate | mg SO4/litre | 250 |
| Surfactants | μg/L (as lauryl sulphate) | 200 |
| Taste | Dilution number | 3 at 25 °C |
| Temperature | °C | 25 |
| Total organic carbon | mg C/L | No higher than normal |
| Turbidity (including suspended solids) | Formazin turbidity units | 4 |
| Zinc | μg Zn/L | 5000 |
Table B
| Table B Parameters | Units of Measurement | Value (Max) |
|---|---|---|
| Antimony | μg Sb/L | 10 |
| Arsenic | μg As/L | 50 |
| Cadmium | μg Cd/L | 5 |
| Cyanide | μg CN/L | 50 |
| Chromium | μg Cr/L | 50 |
| Mercury | μg Hg/L | 1 |
| Nickel | μg Ni/L | 50 |
| Lead | μg Pb/L | 25 |
| Pesticides (individual substances) | μg/L | 0.1 |
| Pesticides (total substances) | μg/L | 0.5 |
| Polycyclic aromatic hydrocarbons(i) | μg/L | 0.2 |
| Selenium | μg Se/L | 10 |
(i) The sum of the detected concentrations of fluoranthene, benzo 3.4 fluoranthene, benzo 11.12 fluoranthene, benzo 3.4 pyrene, benzo 1.12 perylene and indeno (1,2,3-cd) pyrene.
Table C
| Table C Parameters | Units of Measurement | Value (Max) |
|---|---|---|
| Total coliforms | number/100 mL | 0 |
| Faecal coliforms | number/100 mL | 0 |
| Faecal streptococci | number/100 mL | 0 |
| Sulphite-reducing clostridia | number/20 mL | <=1(ii) |
| Colony counts | number/1 mL at 22 °C or 37 °C | No significant increase over that normally observed |
Table D
| Table D Parameters | Units of Measurement | Value (Max) |
|---|---|---|
| Barium | μg Ba/L | 1000 |
| Benzo 3,4 pyrene | ng/L | 10 |
| Boron | μg B/L | 2000 |
| Calcium | mg Ca/L | 250 |
| Chloride | mg Cl/L | 400 |
| Conductivity | μS/cm | 1500 at 20 °C |
| Substances extractable in chloroform | mg/L dry residue | 1 |
| Tetrachloroethene | μg/L | 10 |
| Tetrachloromethane | μg/L | 3 |
| Trichloroethene | μg/L | 30 |
Table E
| Table E Parameters | Units of Measurement | Value (Min) |
|---|---|---|
| Total hardness | mg Ca/l | 60 |
| Alkalinity | mg HCO3/ litre | 30 |
See also
- List of statutory instruments of the United Kingdom, 1989
- Drinking water quality standards
- Hard water
- Water purification
- Water quality
- Water softening
- Water treatment
References
- ^ "Statutory Instrument 1989 No. 1147". The Water Supply (Water Quality) Regulations 1989. legislation.gov.uk. 6 July 1989. Retrieved 26 June 2009.
- ^ "Consultation on the draft Water Supply (Water Quality) Regulations 2016". GOV.UK. DEFRA. February 2016. p. 6. Retrieved 15 March 2023.
- ^ "Water Supply (Water Quality) Regulations SI 1989/1147". cedrec.com. Retrieved 15 March 2023.
- ^ "Water Industry Act 1991". legislation.gov.uk. 25 July 1991. Retrieved 15 March 2023.
External links
- "Statutory Instrument 2000 No. 3184". The Water Supply (Water Quality) Regulations 2000. legislation.gov.uk. 4 December 2000. Retrieved 26 June 2009. – later legislation
This page was last edited on 15 January 2024, at 21:17