For a typical 5/8 x 3/4-inch residential customer, the proposal would raise the monthly Fontana bill from $84.01 to $90.78 in 2026-27. It would then rise to $94.02 in 2027-28 and $96.93 in 2028-29, for a total increase of $12.92 over the three-year period.

What changes

The proposed decision would authorize less than the company asked for in its original filing. It also would raise the customer assistance program subsidy from $1.65 to $12 a month for each division, which would soften the impact for qualifying customers.

For Fontana households and small businesses, the practical point is simple: this is another utility cost to watch. Even a modest monthly increase can add up over a year, especially for customers already managing higher prices elsewhere.

What happens next

The commission can approve, modify, or delay the proposal. If adopted as written, the new rates would take effect July 1, 2026, under the proposed decision.

For now, Fontana water customers should treat this as a pending rate decision, not a finished one.

Sources

• CPUC proposed decision for San Gabriel Valley Water Company general rate increase
• CPUC public forums notice on San Gabriel Valley Water rate application
• Fontana Water general rate case fact sheet