Fontana water and sewer rates

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

Fontana Water Company

Fontana Water Company (San Gabriel Valley Water Company), Schedule FO-1C residential conservation rates effective July 20, 2026: a monthly service charge by meter size plus three tiers per Ccf (first 11, next 13, over 24); a $0.3605 per Ccf surcharge applies to customers not on the Customer Assistance Program.

Use a month	Price per unit (CCF, 748 gallons)
Fixed charge	$24.01 a month
0 to 11 units	$5.15
11 to 24 units	$5.86
24 to more	$7.51

Source: In 2025 about 73% of Fontana Water Company's water was groundwater from the Chino, Rialto and Lytle basins, 12% local surface water from Lytle Creek and 15% State Water Project water.
Hardness: Groundwater hardness averaged 151.35 ppm as calcium carbonate (range 97.8 to 187) in 2025 testing; surface water averaged 134 ppm.
Lead: Lead at household taps (2024 sampling of 50 samples): 90th percentile not detected, 0 samples over the action level; the company found no lead or galvanized service lines requiring replacement.
Perchlorate: Perchlorate in groundwater sources ranged from not detected to 3.9 ppb (average 0.7 ppb) in 2025, against a 6 ppb limit.

West Valley Water District

West Valley Water District, rates effective January 1, 2026, billed monthly: a monthly service charge by meter size plus three tiers per hundred cubic feet (1-10 units, 11-30 units, over 30 units).

Use a month	Price per unit (CCF, 748 gallons)
Fixed charge	$23.82 a month
0 to 10 units	$2.33
10 to 30 units	$2.54
30 to more	$2.73

Source: In 2025, 44.0% of WVWD's supply came from its own groundwater wells, 13.1% was groundwater bought from San Bernardino Valley Municipal Water District, 24.5% was Lytle Creek surface water and 18.4% was State Water Project water.
Lead: Lead at household taps (2024 sampling at 40 sites): 90th percentile not detected, 0 sites over the action level.

Cucamonga Valley Water District

Cucamonga Valley Water District: a monthly meter charge by meter size plus four tiers per HCF (tier allotments for a 3/4-inch meter: 6, 18 and 36 HCF a month), with IEUA and MWD pass-through charges.

Use a month	Price per unit (CCF, 748 gallons)
Fixed charge	$33.66 a month
0 to 6 units	$1.88
6 to 18 units	$2.33
18 to 36 units	$4.46
36 to more	$4.70

Source: In 2025, 51% of CVWD's water was groundwater from the Cucamonga and Chino basins, 41% was imported from Northern California through the State Water Project, and 8% was local canyon and tunnel water.
Hardness: Total hardness averaged 125.5 ppm as calcium carbonate (range 109 to 142) in the 2025 water quality report.

Sewer

The City of Fontana bills sewer service as a flat monthly charge per equivalent dwelling unit; for the Regular class, which covers a typical residential customer, that is the City's collection charge of $14.55 plus the IEUA treatment charge of $29.45, $44.00 in total from July 1, 2026. Homes whose sewage is treated by the City of Rialto pay a higher treatment charge.

Ways to pay less

Low income: Fontana Water Company CAP. Qualifying low-income households with a 1-inch or smaller meter get a $12.00 monthly discount on Fontana Water Company bills. The income limit (valid June 1, 2026 to May 31, 2027) is $43,280 for 1-2 people and $66,000 for 4; CARE customers for gas or electric may also qualify. How: Fill out the CAP application form and hand-deliver, mail or email it to Fontana Water Company.

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.