Regulation 10 Sampling: further provisionsI1
Northern Ireland
As soon as the Department for Regional Development has reasonable grounds for believing that any element, organism or substance, other than residual disinfectant or a parameter, whether alone or in combination with a parameter or any other element, organism or substance, may cause the supply within any of its water supply zones to be a supply which does not satisfy –
the provisions of Part III or,
if a departure has been authorised under Part VI, those provisions as read with the terms of that authorisation,
it shall take, or cause to be taken, sufficient samples from water within that zone (whether from a service reservoir, a treatment works or otherwise) in respect of that element, organism or substance, in order to establish whether that water is wholesome.