# The Private Water Supplies Regulations 1991, Part II: PARAMETERS


Basic parameters
Additional Parameters
(1)
(2)
Notes:
(1) Samples need not be analysed for lead if the local authority are satisfied that lead pipework or solder is not present in the plumbing of the property or that naturally occurring lead is not present in the water.
(2) Samples need not be analysed for nitrate if the local authority are satisfied that nitrate levels in the locality concerned are below 25 mg NO3/l.
(3) Samples should not be assessed qualitatively for taste if the person taking the samples has any reason to suspect that the water may give rise to a health hazard.
(4) 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.
Hydrogen ion
Odour (quantitative)
Zinc
Fluoride
Conductivity
Taste (quantitative)
Polycyclic aromatic hydrocarbons(4)
Barium
Total coliforms
Temperature
Silver
Faecal coliforms
Nitric
Chloride
Arsenic
Lead (1)
Ammonium
Sulphate
Cadmium
Nitrate(2)
Iron
Calcium
Cyanide
Odour (qualitative)
Aluminium
Magnesium
Chromium
Taste (qualitative)(3)
Manganese
Sodium
Mercury
Turbidity
Colour
Potassium
Nickel
Trihalomethanes
Dry residues
Antimony
Tetrachloromethane
Oxidazability (permanent value)
Selenium
Trichloroethene
Total hardness
Tetrachloroethene
Totl organic carbon
Alkalinity
Copper
Boron
Residual disinfectant
Surfaciants
Colony counts
Phosphorus

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Source: https://www.legislation.gov.uk/uksi/1991/2790/schedule/4/part/II (the official version)
Page: https://openlegislation.uk/private-water-supplies-regulations-1991/schedule-4/part-II
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.