San Francisco water and sewer rates
Who supplies water to San Francisco houses, what it costs, and how the sewer charge works.
San Francisco Public Utilities Commission (SFPUC)
San Francisco Public Utilities Commission, schedule W-1A (single-family), FY 2026-27 rates from July 1, 2026: a monthly service charge by meter size ($19.65 for 5/8 inch) plus $12.20 per unit for the first 4 units a month and $13.55 for all additional units (1 unit = 100 cubic feet = 748 gallons).
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $19.65 a month |
| 0 to 4 units | $12.20 |
| 4 to more | $13.55 |
- Source
- Water from Hetch Hetchy Reservoir accounts for up to 85 percent of the water SFPUC delivers each year; in 2025 about 0.42% groundwater was blended into San Francisco's supply.
- Hardness
- Hardness averaged 62 ppm as calcium carbonate in 2025 (range 8.1-112 ppm).
- Lead and PFAS
- No PFAS were detected. There are no known lead service lines in the system; SFPUC offers lead tests at $25 per tap.
Sewer
SFPUC residential wastewater (Schedule A), FY 2026-27: a $6.62 monthly service charge plus $20.74 per discharge unit. A single-family home's discharge is assumed to be 90% of its metered water use.
Other charges on the utility bill
- Stormwater, residential parcel of 1,701-3,300 sq ft (6 or fewer dwelling units, 6,000 sq ft or less net parcel area): $19.66 a month
Ways to pay less
- Low-income households: SFPUC water and sewer discount. Low-income households with an individually metered single-family SFPUC account in their name can get 25% or 40% off the water and sewer bill. For a 4-person household the 2026 income limits are $81,050 (25%) and $48,650 (40%). The discount lasts 36 months, then you reapply. How: Apply online on SFPUC's Customer Assistance Program page or call (415) 551-3000.
Pay or manage it
Sources
- SFPUC water and sewer bill calculator
- SFPUC water and sewer rate schedules FY 2026-27
- SFPUC 2025 San Francisco water quality report
- SFPUC 2023 water and wastewater rate study
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.