Quick answer
Sewer charges can be based on water use, winter averaging, fixed wastewater charges, local formulas, or provider-specific billing rules.
Why sewer can be high
Sewer rates may be higher than water rates, and wastewater charges can rise when water usage rises.
Winter averaging
Some providers use winter months to estimate typical indoor use for sewer billing, but rules vary.
Leaks and sewer charges
A leak may increase both water and wastewater charges unless the provider has a sewer adjustment program.
Review line items
Check whether your bill separates water, sewer, stormwater, trash, taxes, and fixed base charges.
Confirm with your provider
Last reviewed: July 2026
Use this guide for planning and education. Provider rules, payment methods, fees, assistance, and account requirements can change.
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