# The Private Water Supplies (Wales) Regulations 2017, Part 3: Radioactive substances parameters

Extent: E+W

TABLE D:
Prescribed values for radon, tritium and indicative dose of water intended for human consumption
Parameters
Maximum concentration or value
Units of Measurement
(1)Enforcement action by the local authority is deemed justified on radiological protection grounds without further consideration where radon concentrations exceed 1,000 Bq/1.
(2)If tritium concentration exceeds its parametric value, an investigation (which may include analysis) of the presence of artificial radionuclides must be carried out.
Indicative dose (for radioactivity)
0.10
mSv
Radon
100
Bq/l
Tritium (for radioactivity)
100
Bq/l

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Source: https://www.legislation.gov.uk/wsi/2017/1041/schedule/1/part/3 (the official version)
Page: https://openlegislation.uk/private-water-supplies-wales-regulations-2017/schedule-1/part-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.