Singapore's tap water is perfectly safe to drink without any further filtration. You can add a filter to the tap water if you wish.
Use reusable cups!
x1,000 cheaper
Tap water is approximately $3 per 1,000 litres, comparatively to bottled water, which is approximately $3 per litre.
(The University of Queensland)
x1,500 more energy intensive
It takes 1,500 times more energy to produce a bottled water than to treat & distribute tap water.
(The University of Queensland)
Singapore’s tap water quality is good within the Singapore Environmental Public Health Regulations (Water Suitable for Drinking) and World Health Organisation (WHO) Guidelines for Drinking-water Quality.
Over 500,000 tests are conducted annually on physical, organic, inorganic, radiological and microbiological parameters.