San Rafael water and sewer rates
Who supplies water to San Rafael houses, what it costs, and how the sewer charge works.
Marin Water
Marin Water rates effective July 1, 2026; most customers are billed every other month.
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $46.04 a month |
| 0 to 7.5 units | $11.52 |
| 7.5 to 12.5 units | $14.85 |
| 12.5 to 40 units | $23.58 |
| 40 to more | $35.73 |
Sewer
San Rafael Sanitation District charges $1,062.72 per year for each single-family home for 2026-27 ($88.56 a month), shown on the Marin County property tax bill. Questions go to the District Office at (415) 485-4001.
Sources
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.