1. This notice is made by the Secretary of State under the power in regulation 6(12) of the Regulations. It takes effect from 27 September 2019 and supersedes all previous radioactivity notices issued under the Water Supply (Water Quality) Regulations 2000, as amended. It will expire on 26 September 2024, unless otherwise withdrawn.
  2. Regulation 6(7) to (15) of the Regulations relates to the monitoring by water companies of radioactive parameters in the water supply zones they supply. Specifically, regulation 6 requires water companies to monitor parameters for indicative dose, radon and tritium.
  3. Regulation 6(12) of the Regulations provides that the Secretary of State may notify a water company that a radioactive parameter need not be monitored if he is satisfied that, for the period specified in the notice and for the purposes of regulation 4(1), the water supplied to that zone:
    1. gives risk to a calculated indicative dose that is below the parametric value specified in Schedule 2 to the Regulations;
    2. contains levels of radon that are below the parametric value specified in Schedule 2 to the Regulations;
    3. contains levels of tritium that are below the parametric value specified in Schedule 2 to the Regulations.
  4. Based on the evidence presented by Leep Networks Water, the Secretary of State, is satisfied that the water supplied to the water supply zones listed in the Schedule to the Notice (“the Schedule”) contains levels of total indicative dose , Tritium and Radon that are below the parametric values specified in the relevant part of Schedule 2 to the Regulations.
  5. Accordingly, for the period the Notice has effect, Leep Networks Water need not conduct regulatory monitoring for total indicative dose, Tritium and Radon for the sites listed in the Schedule.
  6. Pursuant to regulation 6(14) of the Regulations, the Secretary of State must, by notice in writing, withdraw this notice if he has reason to believe that water supplied to the zone in question, for regulation 4(1) purposes, gives rise to a calculated indicative dose, or contains levels of radon or tritium which are likely to exceed the parametric value specified in Schedule 2 of the Regulations.
  7. In the event that this notice is withdrawn under regulation 6(14), Leep Networks Water must monitor the relevant parameter in accordance with Tables 2 and 3 in Schedule 3 to the Regulations.


Marcus Rink

Chief Inspector of Drinking Water for the Secretary of State for Environment, Food and Rural Affairs

11 October 2019

Ref: SSE-2019-00001

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