Fremont water and sewer rates
Who supplies water to Fremont houses, what it costs, and how the sewer charge works.
Alameda County Water District (ACWD)
ACWD rates for water service inside the District, effective March 1, 2026: a bimonthly service charge of $68.95 for a 5/8 or 3/4 inch meter plus $5.38 per unit (100 cubic feet) for all usage; ACWD bills every other month
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $34.48 a month |
| 0 to more | $5.38 |
- Source
- ACWD supplies the Tri-City area from four sources: imported Delta and Lake Del Valle water treated at its plant, purchased San Francisco water (from Hetch Hetchy Reservoir or the local Calaveras and San Antonio reservoirs), local groundwater, and desalinated brackish groundwater from its Newark plant.
- Lead
- In 2025 lead and copper sampling, 1 of 58 samples was above the lead action level; the 90th percentile was not detected.
Sewer
Union Sanitary District's annual sewer service charge is collected on the Alameda County property tax bill as "Union Sewer Svc": $661.15 per single-family residence for FY27 (July 1, 2026 to June 30, 2027).
Ways to pay less
- Low-income households: ACWD Help on Tap. Income-qualified residential customers get a credit equal to 100% of the bimonthly water service charge, currently $68.95. A household of 1-2 qualifies with income of $67,900 or less. Approval lasts three years. How: Complete and return ACWD's Help on Tap application, or call 510-668-4200 to have one mailed.
- ACWD lawn conversion rebate. ACWD pays single-family homes up to $2 per square foot of lawn converted to a water-efficient landscape with plants, up to a $3,000 rebate. How: Apply through ACWD's Single-Family Residential Water-Efficient Landscape Rebate Program.
Pay or manage it
Sources
Checked October 21, 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.