Without prejudice to the provisions laid down in point a of Article 6(3) of Directive 96/29/Euratom9, Member States shall take all measures necessary to establish an appropriate monitoring programme for water intended for human consumption, to ensure that in the event of non-compliance with the parametric values laid down pursuant to this Directive:

1. (a)

   it shall be assessed whether that poses a risk to human health which requires action and,

2. (b)

   remedial action shall be taken, where necessary, to improve the quality of water to a level which complies with requirements for the protection of human health from a radiation protection point of view.