Fontana Water: Advice Letter 632 effective July 20—what may change on bills

Fontana residents who receive water service through the Fontana Water Company Division should start checking for rate schedule updates in their next bills. San Gabriel Valley Water Company lists Advice Letter 632—tied to its CPUC general rate case cycle—for the Fontana division as effective July 20, 2026 (filed July 15, 2026).

Separately, a CPUC customer notice for Application 25-01-001 lays out “example” bill impacts for July 2026—but those figures are presented in an if approved framework. Here’s what Fontana customers should look for and how to estimate what it could mean for their household.

Why this affects Fontana bills

SGV Water’s rate cycle is connected to the CPUC’s General Rate Case process (Application 25-01-001), which includes SGV Water’s Fontana Water Company Division as part of the request. The CPUC customer notice explains how the rate request could impact customer bills over the 2026 period if the CPUC approves the request.

What an “Advice Letter” is (in plain English)

At the CPUC, an Advice Letter is an informal request by a utility for Commission approval, authorization, or other relief—often used as a regulatory step that supports tariff and rate implementation. The CPUC also provides guidance on how advice letters fit into the tariff process.

What the CPUC customer notice says for July 2026 (example bills)

The Fontana division customer notice uses an example customer with a 5/8-inch meter using 12 Ccf per month (the notice specifies 1 Ccf = 748 gallons).

• Residential example (July 2026): an increase of $10.77 (from $79.73 to $90.50), or 13.5%.
• CAP / low-income assistance example (July 2026): an average increase of $8.76 (from $65.39 to $74.15), or 13.4%.

The notice also says customers can reduce or even eliminate the impact of these increases by conserving water.

What Fontana residents should do now

• Match your bill to the example inputs. The notice’s numbers are tied to a 5/8-inch meter and 12 Ccf/month—your meter size and usage could be different.
• Look for how the change appears on your statement. Use the meter information and usage month-to-month to understand whether your account is being billed under the updated tariff schedule for this rate-cycle step.
• If you’re on CAP, still track usage. The notice provides a CAP example, but your bill can vary based on your consumption.
• Consider conservation as the fastest lever. Since the customer notice links bill impact to water use, reducing Ccf during the transition period can blunt what you pay.

Where to verify the filings

• SGV Water regulatory page: confirms Advice Letter 632 (filed July 15, 2026; effective July 20, 2026).
• CPUC customer notice PDF (Application 25-01-001): contains the Fontana division “example” bill-impact language and the conservation takeaway.
• CPUC Public Advocates background: provides docket context for the general rate case cycle that includes the Fontana division.

Sources

• CPUC Public Advocates Office — SGVWC GRC (A.25-01-001) background (includes Fontana Water Company Division request details)
• CPUC customer notice PDF — SGVWC Application 25-01-001 (Fontana Water Company Division) with July 2026 bill impact examples
• SGV Water Company regulatory — Advice letter index showing AL 632 filed 7/15/26, effective 7/20/26