Public Water Authority
Santa Margarita Water District
Serving Rancho Santa Margarita, Mission Viejo, Ladera Ranch, Coto de Caza, Las Flores, Rancho Mission Viejo, San Juan Capistrano, Dove Canyon, and surrounding South Orange County communities
Population served
Approximately 210,000 residents according to the District’s current rate-study and customer materials; older official operating-period records reported approximately 159,632–168,289 residents. Active California CWS CA3010101 is well above the 3,300-person qualification threshold and provides drinking water, wastewater, and recycled-water service across nine South Orange County communities.
State system code
FIPS 06
Billing frequency
Monthly; the District’s residential rate schedule and water-budget bills are calculated on monthly metered usage, although the number of days in a particular read period can vary.
Provider briefing
How this utility’s billing works
Santa Margarita Water District operates as a public water authority serving Rancho Santa Margarita, Mission Viejo, Ladera Ranch, Coto de Caza, Las Flores, Rancho Mission Viejo, San Juan Capistrano, Dove Canyon, and surrounding South Orange County communities. 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 Increasing block tiers based on an individualized water budget, with four conservation tiers and a location-based power surcharge. Effective March 1, 2026, residential commodity rates are $3.11/CCF for Low Volume use, $3.45/CCF for Base use, $4.33/CCF for Inefficient use, and $7.27/CCF for Wasteful use; a 5/8-by-3/4-inch or 1-inch residential meter has a $26.16 monthly fixed water charge. Power surcharges vary by zone, currently shown as $0.16, $0.27, or $0.45 per CCF.. Bills are generated monthly; the district’s residential rate schedule and water-budget bills are calculated on monthly metered usage, although the number of days in a particular read period can vary., and a typical residential cost reference is For a typical single-family customer using 5,000–7,000 gallons per month (about 6.7–9.4 CCF), staying within the Low Volume/Base budget, water service is approximately $48–$63 per month before the location-specific power surcharge. Adding the standard single-family wastewater charge produces a rough combined water-and-wastewater range of about $88–$106 per month, subject to the customer’s conservation budget, meter size, power zone, billing days, and wastewater category. Exceeding the water budget can move usage into the $4.33 or $7.27 tiers and materially increase the total.. 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
For a single-family residence, wastewater has a $31.96 monthly fixed base charge plus $1.24 per CCF of wastewater commodity use, with commodity billing capped at 9 CCF. Multifamily single-meter service uses a $28.60 monthly fixed charge and a 7-CCF commodity cap; common meters use $13.07 per account plus $15.53 per unit. The public residential schedule does not describe a winter-average calculation; wastewater quantity is billed under the District’s published category and cap, while collection or treatment arrangements can differ by service area.
Meter and infrastructure notes
SMWD bills metered water usage monthly and the current public residential materials describe water-budget billing, meter readings, and customer usage review, but do not identify a universal AMI vendor, hourly transmission interval, or smart-meter rollout schedule for every service address. The current rules include an official meter-testing process and the District’s customer portal provides account usage and bill information. Customers needing the exact read date, meter type, or leak-alert capability for a particular address should call 949-459-6420.
Emergency water support
Report a leak or water emergency
949-459-6420, available 24 hours; outside regular hours, follow the automated instructions and District staff are notified immediately. The District identifies normal customer-service hours as Monday through Friday, 8:00 a.m. to 5:00 p.m., at 26111 Antonio Parkway, Rancho Santa Margarita.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Rancho Santa Margarita, Mission Viejo, Ladera Ranch, Coto de Caza, Las Flores, Rancho Mission Viejo, San Juan Capistrano, Dove Canyon, and surrounding South Orange County communities
Santa Margarita Water District 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.