Irvine Ranch Water District (IRWD)

Provider briefing

How this utility’s billing works

Irvine Ranch Water District (IRWD) operates as a public water authority serving City of Irvine, portions of Lake Forest, Tustin, Orange, Newport Beach, Costa Mesa, and nearby unincorporated 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 Budget-Based Rate Structure with four residential potable tiers tied to each customer’s monthly water budget. The budget uses household occupants, home type, irrigated landscape area, local weather/evapotranspiration, and billing-period length. FY 2026–27 effective July 1, 2026 rates are $2.18/CCF for Low Volume up to 40% of budget, $2.92/CCF for Base use from 41–100%, $8.03/CCF for Inefficient use from 101–140%, and $19.32/CCF for Wasteful use at 141% or more; a 5/8-by-3/4-inch meter has a $15.60 monthly water service charge, with area-based pumping surcharges where applicable.. Bills are generated monthly, generally about a 30-day period. irwd says the exact number of days can vary with meter-read timing and is printed on the bill; fixed charges are prorated when a cycle is longer or shorter than 30 days. water, sewer, recycled-water, pumping-surcharge, credits, and applicable setup or restoration charges can appear on the monthly account summary., and a typical residential cost reference is For a typical 5,000–7,000-gallon monthly household using about 6.7–9.4 CCF and remaining within the Low Volume/Base allocation, the FY 2026–27 water-only planning range is approximately $31–$43 before any pumping surcharge: $15.60 fixed service plus roughly $15–$27 of tiered commodity use. If the home exceeds its budget, the $8.03 or $19.32 penalty tiers can materially increase the bill. Sewer service, which is usually billed by IRWD where applicable, is additional; a precise household total requires the customer’s budget, meter, sewer collection/treatment category, and location.. 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 residential single-family and multifamily units, IRWD’s FY 2026–27 sewer collection-and-treatment service charge is based on the average of the actual lowest three months of water usage during the prior calendar year, charged on a 30-day basis. Customers with less than a full calendar year of history are charged the 90% rate. The schedule lists $29.85/month for average use under 5.0 CCF (75% rate), $38.10/month for 5.01–10.0 CCF (90%), and $44.60/month above 10.0 CCF (100%). Collection-only is $13.65/month and treatment-only is $24.45/month for the listed residential category. Commercial sewer quantity charges assume 90% of water use returns to sewer, with alternate discharge measurement possible by request.

Meter and infrastructure notes

IRWD meters are read monthly by Alexander’s Contract Services using an automated handheld meter-reading system whose data is downloaded and transferred electronically into IRWD’s billing system. The District states that customers’ meters record each 100 cubic feet (one CCF equals 748 gallons), and the bill shows the monthly read dates and number of days, which can vary around a 30-day period. IRWD manages an Advanced Meter Infrastructure program and permits real-time usage-alert devices inside the home or on customer-side piping, but does not permit unauthorized add-on devices inside the District-owned meter box.