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BEAM P
LUS
I
NTERIORS
C
OMMERCIAL
, R
ETAIL
A
ND
I
NSTITUTIONAL
W
ATER
U
SE
(WU)
WU 1 W
ATER
Q
UALITY
S
URVEY
Copyright © BEAM Society Limited. All rights reserved. Page 93
6 W
ATER
U
SE
WU1 W
ATER
Q
UALITY
S
URVEY
E
XCLUSION
None
O
BJECTIVE
Ensure that the quality of potable water is satisfactory.
C
REDIT ATTAINABLE
1
C
REDIT
R
EQUIREMENT
1 credit for demonstrating that the quality of potable water meets the
referenced drinking water quality standards at all points of use.
A
SSESSMENT
Criteria
Potable water sampling should be systematic, such as described in
ISO 5667 [
1]. Sample(s) shall be taken at the farthest point(s) of use
in the distribution system within the project space from the storage
tank of the host building. If water sample(s) can comply with the
seven (7) parameters including pH, colour, turbidity, conductivity, iron,
E.Coli and total coliform as stipulated in the Quality Water
Recognition Scheme for Buildings [
2] administered by the Water
Supplies Department, the credit can be achieved.
Alternative:
Where the water service installation is not provided in th
e project space ,the credit can still be attained provided that the Applicant can
demonstrate:
i.
host building is already awarded with at least Blue Certificate
under the Quality Water Recognition Scheme issued by
Water Supplies Department for potable and flushing water
or
ii.
twin-tank system is installed in the host building for potable
water;
Documentation
Credit shall be achieved when the Applicant provides the
documentation stated below, to demonstrate compliance:
i.
summary table:
ii.
drawings, with plumbing schematic, layout drawings;
iii.
Laboratory test report(s) including details of the analysis of
sample(s) taken from potable water outlets used to supply for
human consumption.
Alternative I:
i.
Certificate(s) for host building;
ii.
Record photographs;
Alternative II:
i.
drawings, schematic for twin tank system;
1
ISO 5667-5:2006 Water quality -- Sampling -- Part 5: Guidance on sampling of drinking water from treatment works
and piped distribution systems
2
Water Supplies Department. Quality Water Recognition Scheme for Buildings
http://www.wsd.gov.hk/en/customer_services_and_water_bills/application_for_licence_certificate/quality_water_reco gnition_scheme_for_buildings/index.html