Tustin water and sewer rates
Who supplies water to Tustin houses, what it costs, and how the sewer charge works.
City of Tustin Water Services
City of Tustin water rates effective 1/1/2026: a bimonthly fixed service charge of $59.09 for a 5/8" or 3/4" meter plus a bimonthly consumption charge of $4.26 per unit (1 unit = 100 cubic feet = 748 gallons).
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $29.55 a month |
| 0 to more | $4.26 |
- Source
- Local groundwater, plus treated surface water purchased from MWDSC and treated groundwater purchased from East Orange County Water District.
- PFAS
- State drinking water standards for PFAS in groundwater led the City to turn off several groundwater wells and replace that supply with imported water.
- Public health goals
- The City's 2025 Public Health Goals report lists bromate and gross alpha among constituents detected above a public health goal at one or more locations.
Sewer
OC San's regional sewer service fee for a single family residence is $397 a year (July 1, 2026 to June 30, 2027), an annual charge on the property tax bill.
Dates
| When | What |
|---|---|
| Jan 1, 2027 | City of Tustin water rates rise: $64.41 bimonthly fixed service charge for a 5/8" or 3/4" meter and $4.65 per unit. |
Pay or manage it
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.