St. Charles water and sewer rates
At typical use (9 units, about 6,700 gallons a month), a St. Charles house pays about $106 a month for water and about $92 for sewer and other utility-bill charges: about $2,380 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to St. Charles houses, what it costs, and how the sewer charge works.
City of St. Charles
Monthly customer charge for a 3/4-inch meter plus $11.70 per 1000 gallons, for bills issued after June 1, 2026.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $27.17 a month |
| 0 to more | $11.70 |
- Source
- The city’s source of water is ground water from two different aquifers.
- Wells
- Wells number 7, 9, 11, and 13 are drilled into the St. Charles sand and gravel aquifer.
Sewer
Residential sewer charge: monthly demand charge plus a usage charge per 1,000 gallons of water used.
Other charges on the utility bill
- EPA Mandate Fee: $4.45 a month
Sources
Checked October 30, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.
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