# Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption (recast) (Text with EEA relevance), Part C: Indicator parameters

Extent: E+W+S+N.I.

Parameter
Parametric value
Unit
Notes
Aluminium
200
μg/l
Ammonium
0,50
mg/l
Chloride
250
mg/l
The water should not be corrosive.
Clostridium perfringens including spores
0
number/100 ml
This parameter shall be measured if the risk assessment indicates that it is appropriate to do so.
Colour
Acceptable to consumers and no abnormal change
Conductivity
2 500
μS cm-1 at 20 °C
The water should not be aggressive.
Hydrogen ion concentration
≥ 6,5 and ≤ 9,5
pH units
The water should not be aggressive.
For still water put into bottles or containers, the minimum value may be reduced to 4,5 pH units. For water put into bottles or containers which is naturally rich in or artificially enriched with carbon dioxide, the minimum value may be lower.
Iron
200
μg/l
Manganese
50
μg/l
Odour
Acceptable to consumers and no abnormal change
Oxidisability
5,0
mg/l O2
This parameter need not be measured if the parameter TOC is analysed.
Sulphate
250
mg/l
The water should not be corrosive.
Sodium
200
mg/l
Taste
Acceptable to consumers and no abnormal change
Colony count 22o C
No abnormal change
Coliform bacteria
0
number/100 ml
For water put into bottles or containers, the unit is number/250 ml.
Total organic carbon (TOC)
No abnormal change
This parameter need not be measured for supplies of less than 10 000 m3 a day.
Turbidity
Acceptable to consumers and no abnormal change
Water should not be aggressive or corrosive. This applies particularly to water undergoing treatment (demineralization, softening, membrane treatment, reverse osmosis, etc.).
Where water intended for human consumption is derived from treatment that significantly demineralizes or softens water, calcium and magnesium salts could be added to condition the water in order to reduce any possible negative health impact, as well as to reduce the corrosiveness or aggressivity of water and to improve taste. Minimum concentrations of calcium and magnesium or total dissolved solids in softened or demineralized water could be established taking into account the characteristics of water that enters those processes.

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Source: https://www.legislation.gov.uk/eudr/2020/2184/annex/I/part/C (the official version)
Page: https://openlegislation.uk/eu-directive-2020-2184/annex-I/part-C
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.