How much water does a household use per month?
Usage varies by fixtures, shower length, laundry, toilets, irrigation, leaks, and billing days. Use the closest household page as a starting point, then replace the gallons with your bill value.
Household water index
Water bill calculators by household size.
Choose a household size, then adjust gallons, water rate, sewer fees, base fees, stormwater charges, and billing assumptions.
Pages
5
indexed entry points
Best use
Pick the closest page, adjust the calculator assumptions, then compare usage, rates, fixed fees, and billing days.
1-Person Household Water Bill Calculator
Estimate a water bill for a 1-person household using monthly gallons, water rate, base fees, sewer charges, stormwater fees, and billing assumptions.
2,500 gallons starter
2-Person Household Water Bill Calculator
Estimate a water bill for a 2-person household using monthly gallons, water rate, base fees, sewer charges, stormwater fees, and billing assumptions.
5,000 gallons starter
3-Person Household Water Bill Calculator
Estimate a water bill for a 3-person household using monthly gallons, water rate, base fees, sewer charges, stormwater fees, and billing assumptions.
7,500 gallons starter
4-Person Household Water Bill Calculator
Estimate a water bill for a 4-person household using monthly gallons, water rate, base fees, sewer charges, stormwater fees, and billing assumptions.
10,000 gallons starter
5-Person Household Water Bill Calculator
Estimate a water bill for a 5-person household using monthly gallons, water rate, base fees, sewer charges, stormwater fees, and billing assumptions.
12,500 gallons starter
FAQ
Short answers for search visitors and bill-checking moments.
Why does household size not explain the whole bill?
Fixed base fees, sewer charges, stormwater fees, minimum bills, outdoor watering, and leaks can matter as much as the number of people in the home.
Should I compare gallons or dollars?
Compare gallons per billing day first. Dollar totals can differ because of rates, sewer formulas, base fees, and local charges.