Washington water and sewer rates
At typical use (9 units, about 6,700 gallons a month), a Washington house pays about $64 a month for water and about $91 for sewer: about $1,850 a year. Estimated from public rates, not anyone's actual bill.
Who supplies water to Washington houses, what it costs, and how the sewer charge works.
Pay or manage it
City of Washington
Rates as of May 1, 2026, Regular (Resident), single meter.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $23.08 a month |
| 0 to more | $6.02 |
- Source
- Washington's community water supply wells draw groundwater.
- Reporting
- The 2025 report lists a Consumer Confidence Rule violation for failing to provide the annual report, July 1 to September 5, 2025.
Sewer
Sewer charges are based on water consumption.
Ways to pay less
- Seniors 62+ who are retired: reduced water and sewer rates. The City's Senior Citizen Affidavit has the applicant state they are a Washington resident, a qualified senior citizen 62 or older, retired and receiving Social Security and/or a retirement pension, receive water or sewer service or both from the City, and will make the service available to no one else except a spouse and/or dependent. The Senior Citizen rates are $5.42 per 1,000 gallons for water and $11.28 per 1,000 gallons for sewer. How: Fill out the City's Senior Citizen Affidavit and drop it at or mail it to the Water/Sewer Department, 301 Walnut Street.
Dates
| When | What |
|---|---|
| Each May 1 | The current water and sewer charges are effective on May 1st each year. |
Sources
- Washington water and sewer rates, May 1 2026
- Washington 2025 water quality report
- Illinois EPA water system detail
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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