# The Natural Mineral Water, Spring Water and Bottled Drinking Water Regulations 1999, Part II: Prescribed concentrations or values


TABLE A
{s001} Note(i) If silver is used in a water treatment process, 80 may be substituted for 10.
Column 1
Column 2
Column 3
Column 4
Item
Parameters
Units of Measurement
Concentration or Value (maximum unless otherwise stated)
1.
Colour
mg/l Pt/Co scale
20
2.
Turbidity (including suspended solids)
Formazin turbidity units
4
3.
Odour (including hydrogen sulphide)
Dilution number
3 at 25°C
4.
Taste
Dilution number
3 at 25°C
5.
Temperature
°C
25
6.
Sulphate
Mg SO4/l
250
7.
Magnesium
Mg Mg/l
50
8.
Sodium
Mg Na/l
150
9.
Potassium
Mg K/l
12
10.
Dry residues
Mg/l
1500 (after drying at 180°C)
11.
Nitrate
Mg NO3/l
50
12.
Nitrite
Mg NO2/l
0.1
13.
Ammonium (ammonia and ammonium ions)
Mg NH4/l
0.5
14.
Kjeldahl nitrogen
Mg N/l
1
15.
Oxidizability (permanganate value)
Mg O2/l
5
16.
Total organic carbon
Mg C/l
No significant increase over that normally observed
17.
Dissolved or emulsified hydrocarbons (after extraction with petroleum ether); mineral oils
μg/l
10
18.
Phenols
μg C6H5OH/l
0.5
19.
Surfactants
μg/l (as lauryl sulphate)
200
20.
Aluminium
μg A1/l
200
21.
Iron
μg Fe/l
200
22.
Manganese
μg Mn/l
50
23.
Copper
μg Cu/l
3000
24.
Zinc
μg Zn/l
5000
25.
Phosphorus
μg P/l
2200
26.
Fluoride
μg F/l
1500
27.
Silver
μg Ag/l
10 {s001}(i)
TABLE B
{s002}(i) The sum of the detected concentrations of individual substances.
{s003}(ii) 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.
Column 1
Column 2
Column 3
Column 4
Item
Parameters
Units of Measurement
Maximum Concentration
1.
Arsenic
μg As/l
50
2.
Cadmium
μg Cd/l
5
3.
Cyanide
μg CN/l
50
4.
Chromium
μg Cr/l
50
5.
Mercury
μg Hg/l
1
6.
Nickel
μg Ni/l
50
7.
Selenium
μg Se/l
10
8.
Antimony
μg Sb/l
10
9.
Lead
μg Pb/l
10
10.
Pesticides and related products:
(a)individual substances
μg/l
0.1
(b)total substances {s002}(i)
μg/l
0.5
11.
Polycyclic aromatic Hydrocarbons {s003}(ii)
μg/l
0.2
TABLE D
Column 1
Column 2
Column 3
Column 4
Item
Parameters
Units of Measurement
Maximum Concentration or Value
1.
Conductivity
μS/cm
1500 at 20°C
2.
Chloride
mg Cl/l
400
3.
Calcium
mg Ca/l
250
4.
Substances extractable in chloroform
mg/l dry residue
1
5.
Boron
μg B/l
2000
6.
Barium
μg Ba/l
1000
7.
Benzo 3.4 pyrene
ng/l
10
8.
Tetrachloromethane
μg/l
3
9.
Trichloroethene
μg/l
30
10.
Tetrachloroethene
μg/l
10

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Source: https://www.legislation.gov.uk/uksi/1999/1540/schedule/3/part/II (the official version)
Page: https://openlegislation.uk/natural-mineral-water-spring-water-and-bottled-drinking-water-regulations-1999/schedule-3/part-II
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.