irrigation controller turned off to lower water bill

Want to know how to lower your sewer service charge on your bill?

Wouldn’t it be great if you had a say in how much you’re charged for sewer service? Wait a minute, you actually do! That’s because SAWS sewer charges are based on your average winter water use. So, the less water you use during the winter, the lower your monthly sewer charge will be for the next billing year.

How winter averaging works

SAWS averages your water use over three consecutive billing periods between mid-November and mid-March to calculate the monthly sewer charges for the year.

Why winter? Most winter water use occurs indoors, and therefore leaves your home via the sewer pipes. Since there are no sewer meters to measure the outgoing flow, winter averaging is a fairly accurate way to estimate your sewer use.

Bottom line: Saving water now can add up to big savings throughout the next year.

Check the schedule

The chart shows the approximate start and end dates of the winter averaging period for each SAWS billing cycle. Your billing cycle is shown in the blue “Current Bill Summary” section on the upper left portion of your bill. SAWS will begin billing you at the newly calculated sewer rate in the month shown.

The schedule changes yearly, so be sure to come back here or check Water in the News, your monthly bill insert, in the fall for the updated winter average period.

Current bill summary example. How to find your billing cycle.

winter averaging period for 2025-2026 by billing cycle