Water Supply (Water Quality) Regulations 1989
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
Wholesomeness -- Table D
The Water Supply Water Quality Regulations 1989 (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. Schedule 2 of the regulations prescribes concentrations for substances that affect wholesomeness.