Private Investor-Owned Utility
Golden State Water Company – South San Gabriel Customer Service Area
Serving Golden State Water South San Gabriel Customer Service Area, including portions of Arcadia, El Monte, Irwindale, Monrovia, Monterey Park, Rosemead, San Gabriel, and Temple City; active CWS CA1910223
Population served
26,240 residents served by active California community water system CA1910223, according to California Drinking Water Watch. The state registry lists approximately 4,736 residential, 280 commercial, 26 agricultural, and 5 industrial connections. Active sources include a Metropolitan Water District treated connection and groundwater wells and treatment facilities identified as Garvey, San Gabriel, and Saxon.
State system code
FIPS 06
Billing frequency
Monthly or bi-monthly, depending on the account. Golden State Water’s policy covers bills rendered monthly or bimonthly, and its FAQ says customer bills may follow either cycle. The printed statement controls the due date and cycle; the ordinary residential tariff uses monthly readiness-to-serve charges and Ccf usage tiers.
Provider briefing
How this utility’s billing works
Golden State Water Company – South San Gabriel Customer Service Area operates as a private investor-owned utility serving Golden State Water South San Gabriel Customer Service Area, including portions of Arcadia, El Monte, Irwindale, Monrovia, Monterey Park, Rosemead, San Gabriel, and Temple City; active CWS CA1910223. 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 CPUC-regulated increasing block tiers with a meter-size monthly readiness-to-serve charge and separately identified authorized balancing-account, purchased-water/power, conservation, or drought charges when applicable. The January 1, 2026 Region 3 residential tariff applicable to ordinary South San Gabriel residential metered service lists Tier 1 for the first 12 Ccf at $4.921/Ccf, Tier 2 for the next 32 Ccf at $5.659/Ccf, and Tier 3 over 44 Ccf at $6.508/Ccf. The 5/8 x 3/4-inch service charge is $36.76 per month; larger meters cost more. One Ccf equals 748 gallons.. Bills are generated monthly or bi-monthly, depending on the account. golden state water’s policy covers bills rendered monthly or bimonthly, and its faq says customer bills may follow either cycle. the printed statement controls the due date and cycle; the ordinary residential tariff uses monthly readiness-to-serve charges and ccf usage tiers., and a typical residential cost reference is For a 5/8 x 3/4-inch residential meter under the January 1, 2026 Region 3 tariff, the $36.76 monthly service charge plus 5,000–7,000 gallons (approximately 6.68–9.36 Ccf, all Tier 1) produces an estimated water-only monthly bill of about $69.65–$82.82 before taxes, balancing-account items, conservation/drought surcharges, or other charges. Golden State’s San Gabriel rate page publishes a benchmark of $81.05 for 6,732 gallons/9 Ccf under the prior/current comparison and a projected $93.11 for 2028; the actual 2026 amount depends on the tariff items on the bill.. 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 Golden State Water CWS CA1910223. South San Gabriel is a regulated potable-water system; the company’s San Gabriel/South San Gabriel payment and tariff materials do not bill municipal wastewater, publish a winter-average method, or calculate sewer as a percentage of potable intake. A sewer charge on a combined property statement belongs to a separate agency unless the customer confirms otherwise.
Meter and infrastructure notes
Golden State bills residential usage in Ccf, with one Ccf equal to 748 gallons, and explains that the meter reader records cubic feet and removes the final black-background digits for billing. MyGSWater provides consumption history and account information, but the reviewed South San Gabriel materials do not identify an AMI/AMR vendor, transmission interval, or fixed route calendar. The documented customer-facing method is periodic meter reading plus portal history; universal hourly smart-meter telemetry remains unverified.
Emergency water support
Report a leak or water emergency
909-394-2272 is the local 24-hour Golden State Water customer-service and emergency line for the South San Gabriel area; the toll-free 24/7 number is 1-800-999-4033. 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 Golden State Water South San Gabriel Customer Service Area, including portions of Arcadia, El Monte, Irwindale, Monrovia, Monterey Park, Rosemead, San Gabriel, and Temple City; active CWS CA1910223
Golden State Water Company – South San Gabriel Customer Service Area 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.