Water Bill Calculator
Calculate water bill by usage and region.
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Overview
The Water Bill Calculator estimates the total water charges for households and businesses based on water consumption, including waterworks fees, sewage fees, and water-use surcharges. South Korea's water rates vary by region and usage type (residential, commercial, industrial) and apply a progressive pricing structure based on consumption volume. This tool helps you understand the bill structure and find ways to save.
Formula
Water Bill = Waterworks Fee (Base Fee + Usage × Progressive Rate) + Sewage Fee (Usage × Sewage Rate) + Water-Use Surcharge (Usage × KRW 160/㎥). Progressive tiers for Seoul residential: 1–30 ㎥ at KRW 360/㎥, 31–50 ㎥ at KRW 550/㎥, 51+ ㎥ at KRW 790/㎥. Sewage fees and water-use surcharges are billed separately.
How to Use
- 1Enter your monthly water consumption in cubic meters (㎥), found on the meter reading notice.
- 2Select your residential region (province/city).
- 3Select the usage type (residential, commercial, industrial, etc.).
- 4Click 'Calculate' to see the waterworks fee, sewage fee, water-use surcharge, and total bill.
Tips
- ✔Water rates follow a progressive structure where higher consumption means higher per-unit costs, so keeping usage in the lower tiers yields significant savings.
- ✔Sewage fees are billed separately from waterworks fees and account for roughly 40–50% of the total bill.
- ✔The water-use surcharge of KRW 160 per cubic meter is a nationwide charge for upstream water quality improvement.
- ✔Installing water-saving showerheads, toilets, and washing machines can significantly reduce consumption.
FAQ
Q. How do I read my water bill?
The bill itemizes waterworks fees (base fee + usage fee), sewage fees, and water-use surcharges. It shows the meter reading period, consumption in cubic meters, individual charges, and the total amount due.
Q. Do water rates differ by region?
Yes, water rates are set by each local government and vary across major cities like Seoul, Busan, and Daegu as well as smaller cities and rural areas. Rates also differ by usage type (residential vs. commercial) within the same region.
Q. How can I reduce my water bill?
Use water-saving fixtures (showerheads, toilets, washing machines), wash dishes in a basin instead of under running water, consolidate laundry loads, and use a bucket instead of a hose for car washing. The key is managing usage to stay within lower progressive tiers.
Q. Why is the sewage fee billed separately?
Sewage fees cover the cost of treating used water at wastewater treatment plants. They follow a separate rate structure from waterworks fees and are calculated based on the same consumption volume as your water usage.
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