Ann Arbor water and sewer rates
Who supplies water to Ann Arbor houses, what it costs, and how the sewer charge works.
Pay or manage it
City of Ann Arbor Water
City water rates effective July 1, 2026 for a single-meter residence: a quarterly customer charge plus four tiers per CCF
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $11.25 a month |
| 0 to 3 units | $2.86 |
| 3 to 6 units | $4.58 |
| 6 to 12 units | $10.61 |
| 12 to more | $22.76 |
- Source
- Ann Arbor’s source water comes from both surface sources (Huron River) and groundwater wells
- Lead
- The City of Ann Arbor has no known homes with lead service lines, but some customers do have lead components in internal plumbing
- Hardness
- Average hardness in the 2025 Water Quality Report is 126 ppm as CaCO3 (7.4 gpg), range 74 - 180 ppm
Sewer
City sewer effective July 1, 2026: a quarterly customer charge plus $6.92 per CCF
Other charges on the utility bill
- Stormwater (impervious-area fee, middle tier): $22.84 a month
Ways to pay less
- Pay the water bill by the due date. The City's rate chart lists a 10% savings for a bill paid by the due date. How: Pay the City water bill by its due date.
Sources
- Ann Arbor: water, sewer and stormwater rates effective July 1, 2026
- Ann Arbor: 2025 Water Quality Report
Checked October 22, 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.