Maplewood water and sewer rates
At typical use (8.2 units, about 6,100 gallons a month), a Maplewood house pays about $80 a month for water and about $100 for sewer: about $2,160 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Maplewood houses, what it costs, and how the sewer charge works.
Pay or manage it
Missouri American Water (St. Louis County)
The Rate W Water & Sewer Infrastructure Replacement Surcharge (WSIRA) is effective Aug. 15, 2026.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $12.00 a month |
| 0 to more | $11.13 |
Sewer
For metered homes, MSD bills a base charge plus a volume charge based on winter-quarter water use in CCF.
Sources
- Water tariff
- Water surcharge tariff
- Sewer lateral program policies
- Sewer lateral repair program
- Missouri American Water rates
Checked October 31, 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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