| Abstract | Water audits were carried out in the Amari Orchid Resort and the Mermaid's Beach
Resort, a medium and a small sized hotel in Pattaya, respectively. The processes of water audit
in this study include water system and management study, meter testing, water consumption
measurement and quantification, water quality evaluation, on-site experiments with water
saving devices, identification of management options, and application of water balance and
distribution models.
The Amari's average water input is 8,356 m3
/month, consisting of well water (76%) and
city water (24%), while the Mermaid's is 1,849 m3
/month and consists of city water (73%)
and truck water (26%). Both hotels have major consumption in guest rooms.
The Amari has treatment systems for both raw water and waste water. Most of its water
quality parameters are within standards. The Mermaid has no treatment system for raw water
but has partial treatment system for waste water. Some of its water quality parameters do not
conform with standards. Fecal coliforms can be detected in tap water from time to time at both
hotels. The fecal coliforms present in the Amari's treated waste water exceed standards by as
much as 2 on the log scale.
Two water saving devices, showerheads and faucet aerators, are tested for their
efficiencies. The inefficiency of the existing showerheads in some of the Amari's guest rooms
was discovered. The experiments conducted indicate a possible saving of 17.03 m3
/roommonth, or 69% of the present consumption, and a pay back period less than 5 months. The
experiments with faucet aerators yielded ambiguous results. Nevertheless, the result at the
Mermaid's rest rooms shows saving result of 0.03 m3
/room-month, or 7% of the water
consumption without the devices installed.
Possible optimum management options for the Amari are : (1) replacement of
showerheads, (2) implementation of a rain water collection system, (3) improvement of garden
irrigation practices and sprinklers, (4) coverage of water storage tanks, and (5) improvement
of the waste water treatment plant and education of operators.
Possible optimum management options for the Mermaid are : ( 1) replacement of
showerheads, (2) improvement of the existing rain water collection system, (3) raw water and
rain water treatment, (4) well water usage change, (5) improvement of the ground water
storage tank, and ( 6) improvement of the existing on-site waste water treatment system. |