4. In section 76HA of the 1980 Act (Application of sections 76G and 76H to certain private supplies)—
(a)after subsection (2)(b) insert—
“(ba)after subsection (3) insert—
“(3A) Where a local authority consider that a Type A supply falling within subsection (1)(a) above (including a supply which falls within subsection (1)(a) because of a failure in relation to an indicator parameter) constitutes a potential risk to human health, the local authority must require such steps under subsection (2)(b) above as are necessary to protect human health.
(3B) In requiring such steps as may be necessary to comply with subsection (3A) above, the local authority must take into account the risks to human health which would be caused by an interruption of the supply or a restriction in the use of water intended for human consumption purposes.””; and
(b)in subsection (2)(f) after “2006;” insert—
““indicator parameter” means a parameter listed in Part II of Table B or in Table C in Schedule 1 to those Regulations;”.