# The Private Water Supplies (Scotland) Regulations 2006, Part Table D: Microbiological and Chemical Parameters: Type B Supplies


National Requirements
(1)Item
(2)Parameters
(3)Concentration or Value (maximum)
(4)Units of Measurement
1.
Coliform Bacteria
0
number/100ml
2.
Conductivity (i)
2500
µS/cm at 20°C
3.
Enterococci
0
number/100ml
4.
Escherichia coli (E.coli)
0
number/100ml
5.
Hydrogen ion
9.5
6.5 (minimum)
pH value
6.
Lead
(a) 25, from 3/7/06 until 24/12/13
(b) 10, from 25/12/13
µgPb/l
7.
Nitrate
50
mgNO3/l
8.
Odour-qualitative
-
-
9.
Taste-qualitative
-
-
10.
Turbidity
4
NTU

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Source: https://www.legislation.gov.uk/ssi/2006/209/schedule/1/part/4 (the official version)
Page: https://openlegislation.uk/private-water-supplies-scotland-regulations-2006/schedule-1/part-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.