Lake Saint Louis water and sewer rates
At typical use (6.4 units, about 4,800 gallons a month), a Lake Saint Louis house pays about $60 a month for water and about $57 for sewer: about $1,400 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Lake Saint Louis houses, what it costs, and how the sewer charge works.
Public Water Supply District #2
For bills issued on or after June 1, 2026: $23.77 Service Availability Charge per month plus $7.46 per 1,000 gallons.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $23.77 a month |
| 0 to more | $7.46 |
- Billing
- Customers who buy both water and sewer service from PWSD #2 get both charges on one bill.
Sewer
Lake St. Louis service area, billings on or after June 1, 2026: User Charge $3.50 per month plus $11.21 per 1,000 gallons or portion thereof.
Ways to pay less
- Water service line insurance. Most residential properties are covered by a water service line program with an $8 annual assessment paid with real estate taxes. How: Call Public Works at 636-695-4221 if you suspect a leak in your water service.
- Sewer lateral insurance. The sewer lateral program costs $20 for an annual assessment paid with real estate taxes and covers repairs from the exterior building foundation wall to the public sewer. How: See the city's Sewer Lateral Insurance page.
Sources
- Water rate tariff (PWSD #2)
- Wastewater rate tariff (PWSD #2)
- City water service insurance
- City sewer lateral insurance
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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