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The Private Water Supplies (England) Regulations 2016
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PART 3Indicator parameters (radioactive substances)
Table D
Parametric values for indicative does, randon and tritium of water intended for human consumption
| Parameters | Maximum concentration or value or state (unless otherwise stated) | Units of measurements |
|---|---|---|
(i) Where treatment to reduce the level of radionuclides in water intended for human consumption has been taken, monitoring must be carried out under Part 1 of Schedule 2 to ensure the continued efficacy of the treatment. | ||
(ii) Enforcement action by a local authority is deemed justified on radiological protection grounds without further consideration where randon concentrates exceed 1,000 Bq/1. | ||
(iii) 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(i) | 0.10 | mSv |
| Gross alpha | 0.1 | Bq/1 |
| Gross beta | 1.0 | Bq/1 |
| Radon(ii) | 100 | Bq/1 |
| Tritium (for radioactivity)(iii) | 100 | Bq/1 |
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