FairfieldWhat a house pays

Fairfield water and sewer rates

Who supplies water to Fairfield houses, what it costs, and how the sewer charge works.

City of Fairfield

City of Fairfield water rates from January 1, 2026 (Resolution No. 2025-217): a fixed service charge of $1.04 per day per dwelling unit plus $2.79 per hundred cubic feet (hcf) for homes in Zones 1-2, where most residential customers are; Zones 3-5 pay $3.82

Use a monthPrice per unit (CCF, 748 gallons)
Fixed charge$31.63 a month
0 to more$2.79
Source
Fairfield's water comes from Lake Berryessa and the Sacramento Delta, carried for treatment through the Putah South Canal and the North Bay Aqueduct.
Hardness
Total hardness averaged 156 ppm as CaCO3 (range 82 to 219) in 2025 testing.
PFAS
29 PFAS chemicals were not detected in any sample under EPA's UCMR 5 monitoring.

Sewer

The Fairfield-Suisun Sewer District's residential sewer service charge is $54.91 a month from July 1, 2026. The City of Fairfield collects it on its water bill.

Ways to pay less

  • Seniors 62+ or disabled, low income: $171 water refund. Heads of household age 62 or older, 100% disabled, or on a VA non-service-connected disability pension, with 2025 household income under $54,950 and a Fairfield Municipal Utilities account in their name all of 2025, could get a $171 refund for 2025 water service. How: Return the Low Income Senior/Disabled Water Refund form to Fairfield Municipal Utilities; 2026 applications were accepted January 1 through May 31, 2026.
  • Water-wise lawn rebate up to $1,500. Through the Solano County Water Agency, Fairfield residents can get up to $1,500 to replace a lawn with a water-wise landscape, up to $300 for a smart irrigation controller and up to $100 for a high-efficiency washer. How: Contact the Solano County Water Agency before you start: scwa2.com or 707-454-9936.

Pay or manage it

Sources

  1. Fairfield-Suisun Sewer District fee schedule FY 2026-27
  2. Fairfield-Suisun Sewer District rates, charges and fees
  3. City of Fairfield Prop 218 water rate notice
  4. City of Fairfield Prop 218 water rates page
  5. City of Fairfield 2025 Water Rate Study (Bartle Wells Associates)
  6. City of Fairfield adopted 2026-2030 water rates (Exhibit A)
  7. City of Fairfield 2025 Water Quality Report
  8. City of Fairfield Low Income Senior/Disabled Water Refund
  9. Low Income Senior/Disabled Water Refund form
  10. City of Fairfield water conservation rebates
  11. City of Fairfield water and sewer services

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.