California-American Water Company - Duarte Service Area

Provider briefing

How this utility’s billing works

California-American Water Company - Duarte Service Area operates as a private investor-owned utility serving Duarte Service Area, including Bradbury, Duarte, portions of Irwindale and Monrovia, and vicinity. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.

The published water-rate framework is described as The 2026 CPUC Schedule SOU-1 for the Southern Division Los Angeles Service Area covering Duarte, San Marino, and Rio Plaza uses increasing residential block rates per 100 gallons (CGL): the first 85 CGL at $0.6657, the next 50 at $0.7766, the next 163 at $0.8727, and all use over 298 CGL at $0.9844. A 5/8 x 3/4-inch residential meter has a $25.95 monthly readiness-to-serve charge; larger meters have higher charges. The bill can also include the $0.0670 per-CGL Duarte purchase-water surcharge, the $0.0024 per-CGL purchase-power surcharge, CPUC reimbursement, CAP, franchise-fee, and other authorized tariff items.. Bills are generated residential accounts may be billed monthly or quarterly according to the account and meter-reading route. california american water describes regular meter readings and says residential customers can receive monthly or quarterly bills; the statement's service dates and due date control the individual account., and a typical residential cost reference is For a typical 5/8 x 3/4-inch meter using 5,000–7,000 gallons per month (50–70 CGL, still within the first tier), the 2026 base calculation is approximately $59.24–$72.55 before the Duarte purchase-water and purchase-power surcharges, CAP surcharge, 2% Duarte franchise fee, CPUC reimbursement, taxes, and any other bill items. Including the two published quantity surcharges but excluding percentage-based and account-specific items gives an indicative $62.71–$77.41 range; the actual bill should be calculated from the current statement and all tariff schedules.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.

Wastewater and sewer calculation

A dedicated this detail was not publicly posted. For active CWS CA1910186. The Duarte Service Area is California American Water potable-water service; the reviewed California American Water Southern Division tariff and billing materials do not bill municipal wastewater, publish a winter-average sewer formula, or tie a sewer percentage to water intake. A separate sewer charge on a property statement belongs to the applicable local wastewater agency unless the customer has a distinct wastewater account.

Meter and infrastructure notes

California American Water describes regular monthly or quarterly meter readings for residential accounts, with the actual schedule depending on the account and route. The company is replacing aging meters with Badger Meter AMI, which can provide detailed usage, near-real-time readings, streamlined meter reading, and possible leak notifications. Customers can request a manual-meter opt-out by calling 1-888-237-1333; the current company information states a $13 monthly opt-out charge plus a $70 initial fee. The Duarte record does not publish a conversion percentage or exact route date, so the local system should be treated as AMI-transitioning with account-specific wireless or manual reads.