Municipal Department
City of Corona Utilities Department – Water Division
Serving Corona and the City’s water-service area in Riverside County
Population served
168,575 permanent residents served by active CWS PWS CA3310037 according to the California Drinking Water Watch record. The City describes its community as more than 160,000 residents and its water division as serving over 160,000 customers across approximately 45 square miles.
State system code
FIPS 06
Billing frequency
Regular water and sewer bills are generally monthly, although the municipal code permits billing at regular intervals as infrequently as bimonthly. The City posts same-business-day payment credit for online, drop-box, and other payments received before the applicable cutoff; customers should rely on the due date shown on the individual bill.
Provider briefing
How this utility’s billing works
City of Corona Utilities Department – Water Division operates as a municipal department serving Corona and the City’s water-service area in Riverside 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 Tiered water-budget pricing plus a fixed Ready to Serve charge. Effective January 1, 2026, residential potable consumption is $2.13 per unit for Tier 1 efficient indoor use, $3.60 for Tier 2 efficient outdoor use, $4.77 for Tier 3 usage 1%–50% over the assigned water budget, and $5.69 for Tier 4 usage 51% or more over budget. The 5/8-inch potable Ready to Serve charge is $35.75 per month. A single-family indoor budget defaults to four residents at 47 gallons per person per day, or 188 gallons per day, while the outdoor budget uses irrigated-landscape area; residents can request a variance for household size, a repaired leak, or a filled pool.. Bills are generated regular water and sewer bills are generally monthly, although the municipal code permits billing at regular intervals as infrequently as bimonthly. the city posts same-business-day payment credit for online, drop-box, and other payments received before the applicable cutoff; customers should rely on the due date shown on the individual bill., and a typical residential cost reference is Approximately $100–$106 per month for water plus the standard residential sewer charge for a 5,000–7,000-gallon household, before trash, EMS, taxes, or unusual budget overages. At 6.7–9.4 units, water is about $50.03–$55.77 when usage remains in the $2.13 Tier 1 range, consisting of the $35.75 5/8-inch Ready to Serve charge plus commodity use; the 2026 residential sewer fixed charge is $50.01 per dwelling. Actual water cost depends on the assigned indoor/outdoor budget, season, meter size, and whether use enters Tiers 2–4.. 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
Corona bills sewer service with a $50.01 monthly residential fixed charge per dwelling effective January 1, 2026. The fixed charge includes an 8-unit monthly allowance for all customers; non-residential customers pay a $6.05 variable charge for water used above 8 units in a billing period. The City’s bill explanation says sewer charges are generally based on residential units served or meter size rather than a winter-average clean-water formula. Sewer and water may appear on the same consolidated bill, but the wastewater charge is set by the separate sewer schedule.
Meter and infrastructure notes
Corona is upgrading water meters citywide to smart AMI meters. The City says the upgrade will provide hourly water-use data, leak alerts, and improved billing through MyAccount.CoronaCA.gov; the customer usage portal is identified with WaterSmart branding. During deployment, meters still need to be accessible for billing reads and the portal may show historical or newly transmitted usage depending on installation status. Customers should use the portal’s hourly data and leak alerts, compare them with the monthly bill, and call Customer Care when a read appears inconsistent or a leak alert persists.
Emergency water support
Report a leak or water emergency
(951) 736-2234 is the Utilities Department emergency line for water outages, main breaks, and urgent water issues. During Monday–Thursday working hours, call the same number; after hours and on weekends, call and press option 4 for standby emergency assistance. Routine billing and account issues use (951) 736-2321. Call 911 for an immediate life-threatening emergency.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Corona and the City’s water-service area in Riverside County
City of Corona Utilities Department – Water Division is listed here as a municipal department. 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.