Water Bill Estimator
Estimate your monthly and annual water bill based on household size and usage. Enter people, gallons per person per day and your water rate to get a cumulative spending chart.
How to use this tool
- Enter people in household, gallons per person per day, water rate and period in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your estimated monthly bill and the full breakdown beneath it.
The average American uses about 80–100 gallons of water per day for showering, laundry, cooking and landscaping. US water rates average around $0.006 per gallon, making the typical household water bill $40–$80 per month.
Frequently asked questions
- Why is my actual bill higher than the estimate?
- Most utilities charge tiered rates — the first few thousand gallons are cheap and prices rise as you use more. There are also fixed service fees, sewer charges (often equal to or higher than water) and stormwater fees.
- How can I reduce my water bill?
- Low-flow showerheads ($20–$50) can cut shower use by 40%. Fixing a leaky toilet can save 100+ gallons per day. Watering lawns at dawn reduces evaporation.