# Water Price Singapore: PUB Water Bill Calculator

Your monthly water bill at PUB's water price (S$3.53/m³ with GST up to 40 m³), the average for your flat type and what shorter showers save.

Interactive tool: https://lookup.sg/tools/water-bill-calculator

## 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.

## Sources
- [PUB: Water price to rise from April 2024 (price table to 1 April 2025)](https://www.pub.gov.sg/Resources/News-Room/PressReleases/2023/09/Water-price-to-rise-from-April-2024-Government-to-provide-support)
- [PUB: Water price components](https://www.pub.gov.sg/Public/WaterLoop/Water-Price)
- [MOF: Why Water Conservation Tax is subject to GST](https://www.mof.gov.sg/news-resources/newsroom/why-water-conservation-tax-is-subject-to-gst/)
- [SP Group: Average water consumption by premises type, Sep 2025 to Aug 2026](https://www.spgroup.com.sg/dam/spgroup/docs/our-services/utilities/tariff-information/Average-Water-Consumption--CuM-_Sep-25-to-Aug-26.xlsx)
- [PUB: Potential water savings by water efficiency label](https://www.pub.gov.sg/-/media/Images/Feature/Content-Pages/Resources/Publications/Pdfs/Potential_Water_Savings.pdf)

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Source: Lookup (https://lookup.sg) · Data as of October 2026 · Listings compiled from Singapore government open data (data.gov.sg), OneMap and Overture Maps places. Free listings never show contact details; contact details appear only on Lookup Verified listings.