Public Water Authority
Alameda County Water District (ACWD)
Serving Fremont, Newark, and Union City
Population served
344,000 people served by active CWS PWS CA0110001 in the current EPA SDWIS record; ACWD’s current fact sheet reports approximately 351,000 residents and 88,450 customer accounts across its 105-square-mile Tri-City service area.
State system code
FIPS 06
Billing frequency
Bimonthly, six bills per year. Each statement combines a fixed meter service charge with a commodity charge based on the number of 100-cubic-foot units used during the two-month period. The typical 5/8- or 3/4-inch residential service charge is $68.95 per bimonthly bill as of March 1, 2026, in addition to the consumption charge.
Provider briefing
How this utility’s billing works
Alameda County Water District (ACWD) operates as a public water authority serving Fremont, Newark, and Union City. 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 Uniform commodity rate per 100 cubic feet (748 gallons) plus a bimonthly meter-size service charge. Effective March 1, 2026, the residential 5/8- or 3/4-inch service charge is $68.95 per bill and the typical inside-District commodity charge is $5.38 per unit; outside-District commodity service is $6.15 per unit. ACWD removed its drought surcharge in April 2023. A private fire-service line adds a separate bimonthly meter-size charge.. Bills are generated bimonthly, six bills per year. each statement combines a fixed meter service charge with a commodity charge based on the number of 100-cubic-foot units used during the two-month period. the typical 5/8- or 3/4-inch residential service charge is $68.95 per bimonthly bill as of march 1, 2026, in addition to the consumption charge., and a typical residential cost reference is ACWD’s current rate page states that an average single-family customer uses about 16 units per two-month bill and pays an average bimonthly bill of $155.03. That is approximately $77.52 per month for water alone, before any local sewer charge. For a 5,000–7,000-gallon monthly usage pattern (about 13.4–18.7 units per bimonthly bill), the inside-District water estimate is roughly $65–$84 per month including the fixed service charge; actual use, outside-District status, meter size, and property charges control the statement.. 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
ACWD is a potable-water wholesaler/retail district and does not operate a unified sanitary-sewer billing system for Fremont, Newark, and Union City. Sewer or wastewater charges are administered separately by the applicable municipal or regional sanitation agency and may appear on a separate bill or property-tax assessment. ACWD’s water statement contains the bimonthly meter service and commodity charges only; customers must identify their local sewer agency for winter averaging, flat residential charges, or commercial-strength calculations.
Meter and infrastructure notes
ACWD has installed Advanced Metering Infrastructure that reads meters remotely and sends possible-leak alerts through My Smart Water Connect. The customer portal supports 15-minute, daily, bill-cycle, seasonal, CCF, and gallon usage views; ACWD’s 2026 leak guidance identifies continuous-use thresholds such as residential use above 7.5 gallons for 22 consecutive hours in a 24-hour period. The District’s bimonthly billing cycle is the published schedule, while the public pages do not disclose a route-day calendar or AMI vendor. ACWD also reports that smart-meter installation began in 2021 to provide conservation insights and improve operational efficiency.
Emergency water support
Report a leak or water emergency
(510) 668-6500, ACWD’s 24-hour number for leaks, meter issues, water-quality concerns, water-main breaks, and other water emergencies. Customer-service and billing questions use (510) 668-4200; water-conservation assistance uses (510) 668-4218. ACWD is responsible for the public side of the meter and the meter itself, while the property owner is generally responsible for customer-side plumbing and irrigation.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Fremont, Newark, and Union City
Alameda County Water District (ACWD) is listed here as a public water authority. 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.