Water Price Singapore: PUB Water Bill Calculator
SP Group national average monthly water use, Sep 2025 to Aug 2026.
The first 40 m³ costs S$3.53 per m³ with GST; anything above costs S$4.79. You have 25.0 m³ of headroom.
- Water tariff15.0 m³ × S$1.43S$21.45
- Water Conservation Tax15.0 m³ × S$0.72S$10.80
- Waterborne Tax15.0 m³ × S$1.09S$16.35
- GST 9%Charged on the full water price, including both taxesS$4.37
Most homes never reach the higher rate: PUB says more than 96% of households use under 40 m³ a month.
Shower-time saver
Showering is one of the biggest uses of water at home. See what a shorter shower is worth.
Cutting 2 min saves 1,620 litres a month (1.62 m³)
S$12.77 /month
S$5.72 water + S$7.04 electricity (22.6 kWh). About S$153 a year.
Estimated monthly water charges
S$52.97
- Before GST
- S$48.60
- GST
- S$4.37
- Per year
- S$636
- Litres per day
- 500
- Average HDB 4-room
- 15.0 m³, S$52.97
Water only. U-Save rebates for HDB households, electricity, gas and refuse removal are not included.
How this works
Since 1 April 2025, PUB's domestic water price is S$3.24 per m³ before GST for the first 40 m³ a month: the water tariff (S$1.43), the Water Conservation Tax (S$0.72, 50% of the tariff) and the Waterborne Tax (S$1.09). Water above 40 m³ a month costs S$4.39 per m³: tariff S$1.81, Water Conservation Tax S$1.18 (65%) and Waterborne Tax S$1.40.
GST at 9% is charged on the whole water price, including both taxes, so the first 40 m³ costs about S$3.53 per m³ and the rest about S$4.79 per m³. The bill is the m³ in each tier × its price, plus GST.
Typical usage is SP Group's national average by home type, averaged over September 2025 to August 2026 (15.0 m³ a month for an HDB 4-room flat). The shower saver multiplies people × minutes saved × the shower head's flow rate × 30 days, using PUB's water efficiency label bands (1 tick up to 9 litres a minute, 2 ticks up to 7, 3 ticks 5 or less). The optional electricity saving assumes water warmed from about 28°C to 40°C.
FAQs
What is the water price in Singapore in 2026?
S$3.24 per m³ before GST (about S$3.53 with 9% GST) for the first 40 m³ a month, and S$4.39 per m³ (about S$4.79 with GST) above 40 m³. These PUB rates have applied since 1 April 2025.
How much is the water bill for a 4-room HDB flat?
About S$52.97 a month: HDB 4-room households used an average of 15.0 m³ a month from September 2025 to August 2026, at S$3.24 per m³ plus GST. A 3-room flat averages 11.9 m³ (about S$42.03) and a 5-room flat 16.6 m³ (about S$58.62).
Is GST charged on the Water Conservation Tax and Waterborne Tax?
Yes. GST at 9% applies to the full water price including both taxes, so 15 m³ costs S$48.60 before GST and S$52.97 with GST.
How much water does a shower use?
A shower head with PUB's 1-tick label uses up to 9 litres a minute, so a 10-minute shower uses about 90 litres. Cutting 2 minutes a day for 3 people saves about 1.6 m³ a month, roughly S$5.72 in water at the first-tier price.