Private Investor-Owned Utility
Golden State Water Company - South Arcadia System
Serving South Arcadia System, including portions of Temple City, Arcadia, El Monte, Irwindale, Monrovia, and adjacent unincorporated Los Angeles County
Population served
27,072 people served; the active California Drinking Water Watch record lists 7,344 residential, 276 commercial, 45 agricultural, and 1 industrial metered connection.
State system code
FIPS 06
Billing frequency
Golden State Water's residential accounts may be billed monthly or bimonthly depending on the route and account. Bills are due on presentation, and the printed statement controls the service period, meter read, amount due, and due date.
Provider briefing
How this utility’s billing works
Golden State Water Company - South Arcadia System operates as a private investor-owned utility serving South Arcadia System, including portions of Temple City, Arcadia, El Monte, Irwindale, Monrovia, and adjacent unincorporated Los Angeles County. 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 CPUC 2026 Region 3 Schedule R3-1-R applies to the South Arcadia territory and uses increasing residential Ccf blocks: the first 12 Ccf at $4.502 per Ccf, the next 32 Ccf at $5.177, and use over 44 Ccf at $5.954. A 5/8 x 3/4-inch residential meter has a $33.65 monthly readiness-to-serve charge. The bill can also include authorized temporary balancing-account, CAP, conservation, reimbursement, and other CPUC tariff surcharges or surcredits; one Ccf equals 748 gallons.. Bills are generated golden state water's residential accounts may be billed monthly or bimonthly depending on the route and account. bills are due on presentation, and the printed statement controls the service period, meter read, amount due, and due date., and a typical residential cost reference is For a typical 5/8 x 3/4-inch meter using 5,000–7,000 gallons monthly (about 6.68–9.36 Ccf, all within the first tier), the 2026 base estimate is approximately $63.73–$75.80 before authorized surcharges and account-specific charges: $33.65 monthly service charge plus $4.502 per Ccf. South Arcadia groundwater supply and the current bill's reimbursement, CAP, conservation, or balancing-account items can change the final amount.. 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 CWS CA1910212. Golden State Water's South Arcadia System is a potable-water provider and its CPUC tariff does not calculate or collect municipal wastewater by winter averaging or a percentage of intake. If a combined property statement includes sewer, that charge is from the applicable local wastewater agency or another account and is not part of the South Arcadia water tariff.
Meter and infrastructure notes
Golden State Water bills from account meter readings and may render monthly or bimonthly residential statements. The reviewed South Arcadia materials do not publish a local AMI conversion percentage or fixed route day. Customers should use the current bill's previous/current read, service dates, and meter number; MyGSWater provides account history and usage information, while the company should be contacted for the exact meter technology and any leak-alert capability at a particular premise.
Emergency water support
Report a leak or water emergency
1-800-999-4033 is Golden State Water's toll-free 24-hour customer-service and emergency line for South Arcadia leaks, main breaks, bursts, and water-quality emergencies; the local number is 909-394-2272. Customers can also submit an authorized service request online. Call 911 for immediate life-safety emergencies.
Official starting point
Choose the right next step
Reading this profile
A practical reference for South Arcadia System, including portions of Temple City, Arcadia, El Monte, Irwindale, Monrovia, and adjacent unincorporated Los Angeles County
Golden State Water Company - South Arcadia System is listed here as a private investor-owned utility. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.