18.—(1) If any private supply of water intended for human consumption constitutes a potential danger to human health, a local authority acting under these Regulations must serve a notice under this regulation on the relevant person (as defined in section 80 of the Water Industry Act 1991(1)) instead of a notice under that section.
(2) The notice must —
(a)identify the private supply to which it relates;
(b)state the grounds for serving the notice;
(c)prohibit or restrict the use of that supply;
(d)specify what other action is necessary to protect human health.
(3) The local authority must promptly inform consumers of the notice and provide any necessary advice.
(4) The notice may be subject to conditions and may be amended by further notice at any time.
(5) The local authority must revoke the notice as soon as there is no longer a potential danger to human health.
(6) It is an offence to breach a notice served under this regulation or fail to comply with it.