Water Supply (Water Quality) Regulations 1989

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Water Supply Water Quality Regulations 1989
Statutory Instrument
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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 The regulations have been superseded by several later instruments.

Contents

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 ParametersUnits of MeasurementValue (Max)
Aluminium μg Al/litre (l)200
Ammonium (ammonia and ammonium ions) mg NH4/litre0.5
Colourmg/1 Pt/Co scale 20
Copper μg Cu/L3000
Dissolved or emulsified hydrocarbons ( extract with petroleum ether); mineral oils μg/L10
Dry residues mg/l1500 dry at 180 °C
Fluoride μg F/L1500
Hydrogen ion pH value 9.5 - 5.5(min)
Iron μg Fe/L200
Kjeldahl nitrogen mg N/L1
Magnesium mg Mg/L50
Manganese μg Mn/L50
Nitrate mg NO3/litre50
Nitrite mg NO2/litre0.1
Odour (including hydrogen sulphide) Dilution number 3 at 25 °C
Oxidizability (permanganate value)mg O2/litre5
Phenols μg C6H5OH/litre0.5
Phosphorus μg P/L2200
Potassium mg K/L12
Silver μg Ag/L10 (80 If used in treatment process)
Sodium mg Na/L150(*)
Sulphate mg SO4/litre250
Surfactants μg/L (as lauryl sulphate)200
Taste Dilution number 3 at 25 °C
Temperature °C 25
Total organic carbon mg C/LNo higher than normal
Turbidity (including suspended solids) Formazin turbidity units 4
Zinc μg Zn/L5000

Table B

Table B ParametersUnits of MeasurementValue (Max)
Antimony μg Sb/L10
Arsenic μg As/L50
Cadmium μg Cd/L5
Cyanide μg CN/L50
Chromium μg Cr/L50
Mercury μg Hg/L1
Nickel μg Ni/L50
Lead μg Pb/L25
Pesticides (individual substances)μg/L0.1
Pesticides (total substances)μg/L0.5
Polycyclic aromatic hydrocarbons(i)μg/L0.2
Selenium μg Se/L10

(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 ParametersUnits of MeasurementValue (Max)
Total coliforms number/100 mL0
Faecal coliforms number/100 mL0
Faecal streptococcinumber/100 mL0
Sulphite-reducing clostridianumber/20 mL<=1(ii)
Colony countsnumber/1 mL at 22 °C or 37 °CNo significant increase over that normally observed

Table D

Table D ParametersUnits of MeasurementValue (Max)
Barium μg Ba/L1000
Benzo 3,4 pyrene ng/L10
Boron μg B/L2000
Calcium mg Ca/L250
Chloride mg Cl/L400
Conductivity μS/cm1500 at 20 °C
Substances extractable in chloroform mg/L dry residue1
Tetrachloroethene μg/L10
Tetrachloromethane μg/L3
Trichloroethene μg/L30

Table E

Table E ParametersUnits of MeasurementValue (Min)
Total hardness mg Ca/l60
Alkalinity mg HCO3/ litre 30

See also

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References

  1. "Statutory Instrument 1989 No. 1147". The Water Supply (Water Quality) Regulations 1989. legislation.gov.uk. 6 July 1989. Retrieved 26 June 2009.
  2. "Consultation on the draft Water Supply (Water Quality) Regulations 2016". GOV.UK. DEFRA. February 2016. p. 6. Retrieved 15 March 2023.
  3. "Water Supply (Water Quality) Regulations SI 1989/1147". cedrec.com. Retrieved 15 March 2023.
  4. "Water Industry Act 1991". legislation.gov.uk. 25 July 1991. Retrieved 15 March 2023.