MILLSTREAM WATER RESERVE —
1563. Hon JACQUI BOYDELL to the minister representing the
Minister for Water:
I refer to the Millstream Water
Reserve water supply in the Pilbara.
(1) What volume
of water is currently servicing Karratha, and how many gigalitres are being
sourced from —
(a) the Millstream aquifer;
(b) Harding Dam; and
(c) other sources?
(2) What percentage of that volume
(a) residential use; and
(b) industrial use?
(3) What has been the yield taken from the Millstream
aquifer each year for 2016, 2017, 2018 and 2019 to date?
(4) What is the predicted demand on
the water reserve for the next five years?
(5) Have any
potential new bore fields been investigated; and, if yes, can the minister
please provide details?
ALANNAH MacTIERNAN replied:
I thank the member for the
question. The Minister for Water has provided the following answer.
(1) Karratha is supplied from the west Pilbara water
supply scheme. The volumes provided relate to the overall supply to the
west Pilbara water supply scheme. For the year to date, 1 May 2019 to 30 November
(a) Millstream aquifer, 2.8
(b) Harding Dam, 1.35 gigalitres; and
(c) other sources, Bungaroo bore
field, 4.4 gigalitres.
(2) Of the water supplied, 68 per
cent is for —
(a) residential use, 57 per cent; and
(b) industrial use, 11 per cent.
(3) The following
volumes are based on water year, 1 May to 30 April: 2016–17, 6.17
gigalitres; 2017–18, 3.25 gigalitres; 2018–19, 2.67 gigalitres;
and 2019–20 to date, 2.8 gigalitres.
(4) If Harding
Dam receives rainfall recharge and is available to be used over the next five
years, the demand on the Millstream reserve will be approximately 2.5
gigalitres per year. If Harding Dam does not receive rainfall recharge and
continues to be offline from the end of this month, the demand on the reserve
will be approximately six gigalitres per year.
(5) The Water
Corporation is investigating a range of other water sources. Site investigations
have not yet taken place.