San GabrielWhat a house pays

San Gabriel water and sewer rates

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

San Gabriel County Water District

San Gabriel County Water District bills every two months. Rates effective January 1, 2026: a $51.49 bi-monthly capacity charge for a 5/8-inch meter and a commodity rate of $2.71 per unit (one hundred cubic feet, hcf). Bills also carry a Water Quality Authority pass-through charge, $0.53 for a 5/8-inch meter.

Use a monthPrice per unit (CCF, 748 gallons)
Fixed charge$26.01 a month
0 to more$2.71
Source
All of the District's water comes from wells in the Main San Gabriel and Raymond Groundwater Basins and is disinfected with chlorine.
Hardness
Hardness averaged 97.4 ppm (range 17 to 200).
Lead
Lead at the tap: the 90th percentile of 30 sample sites was ND (not detected), and none exceeded the action level.
Chromium 6
Hexavalent chromium averaged 4.2 ppb (range 2.2 to 6.8), below the 10 ppb limit.

California American Water (San Marino system)

California American Water, Southern Division Schedule SOU-1 rates effective January 1, 2026 (its San Marino Service Area includes a portion of San Gabriel): a $25.95 monthly service charge for a 5/8 x 3/4-inch meter plus residential quantity rates per 100 gallons for the first 85, next 50, next 163 and over 298 hundred gallons a month, purchased water and power surcharges of $0.0680 and $0.0029 per 100 gallons from July 1, 2026, two 12-month surcharges of $0.0096 and $0.0027 per 100 gallons from July 1, 2026, and a 1.103% City of San Gabriel franchise fee surcharge.

Use a monthPrice per 1,000 gallons
Fixed charge$26.24 a month
0 to 8.5 thousand gallons$7.57
8.5 to 13.5 thousand gallons$8.69
13.5 to 29.8 thousand gallons$9.66
29.8 to more$10.79
Source
Mostly groundwater from the Main San Gabriel and Raymond Basins (77% from San Marino wells), plus water bought from the Metropolitan Water District (23%).
Standards
California American Water says the San Marino system's water met state and federal drinking water requirements in 2025.
Hardness
Total hardness averaged 113 ppm (6.6 grains per gallon) in the San Marino wells and 234 ppm (14 grains) in the MWD Weymouth supply.
Chromium 6
Hexavalent chromium was not found above the limit; the company says it is working on treatment to comply with the limit by October 1, 2026.

Sewer

City of San Gabriel sewer user fee: $117 a year for a single-family residence (FY 2026-27 fee schedule), collected on the annual property tax bill.

Ways to pay less

  • Water-saving rebates. SGCWD residential customers qualify for rebates from the Upper San Gabriel Valley Municipal Water District to offset the cost of water-saving upgrades. How: Check out the rebates linked from SGCWD's Water Use Efficiency page.
  • Low-income households: California American Water discount. Qualifying low-income California American Water customers can get a discount on their water bill once accepted into the company's low-income program. How: Apply with California American Water.
  • Low-income seniors over 62: Safe, Clean Water parcel tax exemption. Owners over 62 who live in the home and head a low-income household can apply for an exemption from the Safe, Clean Water Program special parcel tax; the FY 2027-28 limit is $106,600 for a 2-person household. How: Submit the claim form to the Safe, Clean Water Program by May 1 each year; call 833-275-7297.
  • Low water use: reduced sanitation district charge. Parcels with significantly lower water usage may be eligible for a reduced rate under the Master Service Charge Ordinance of County Sanitation District No. 2. How: See the reduced-rate terms of County Sanitation District No. 2's Master Service Charge Ordinance.

Dates

WhenWhat
May 1, 2027Deadline for low-income seniors to apply for the Safe, Clean Water Program parcel tax exemption for FY 2027-28.

Pay or manage it

Sources

  1. San Gabriel County Water District: about us
  2. California American Water Schedule SOU-1 (Southern Division)
  3. City of San Gabriel: sewer user fee
  4. City of San Gabriel: sewer
  5. San Gabriel County Water District: SB 998 (billing and shutoff policy)
  6. San Gabriel County Water District: rates and fees
  7. San Gabriel County Water District CY 2025 rate study
  8. San Gabriel County Water District 2025 Consumer Confidence Report
  9. California American Water San Marino rate change notice (2025)
  10. California American Water San Marino 2025 water quality report
  11. Metropolitan Water District Resolution 9397 (FY 2026/27 tax rate)
  12. Upper San Gabriel Valley Municipal Water District
  13. LA County Public Works Safe Clean Water tax layer description
  14. Safe, Clean Water Program: FY 2027-28 low-income senior exemption form
  15. Safe, Clean Water Program: tax appeal procedures and guidelines
  16. Metropolitan Water District FY 2026/27 water standby charge resolution
  17. LA County Public Works Safe Clean Water tax layer: median San Gabriel single-family tax
  18. San Gabriel County Water District: water use efficiency

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.