11. The Act of 2007 is amended by the insertion of the following section after section 53C (inserted by section 10):

“53D. (1) Irish Water shall give a notice to a customer to whom, over a 12 month period, in relation to a dwelling, Irish Water provides water services exceeding the threshold amount.

(2) In the notice under subsection (1) Irish Water shall—

(a) identify the 12 month period concerned,

(b) inform the customer that the threshold amount has been exceeded in that 12 month period, and

(c) inform the customer that subsection (3) shall apply if the threshold amount continues to be exceeded over the 6 month period beginning on the day of the giving of the notice.

(3) A customer in relation to whose dwelling Irish Water provides water services exceeding the threshold amount over the 6 month period commencing on the day of the giving of a notice under subsection (1), shall be liable, in accordance with section 21 (amended by section 15 of the Water Services Act 2017) of the No. 2 Act of 2013, to pay Irish Water for any such water services provided by Irish Water that exceed the threshold amount—

(a) during that 6 month period, and

(b) during any period after the expiration of that 6 month period.”.