Irvine water and sewer rates
Who supplies water to Irvine houses, what it costs, and how the sewer charge works.
Irvine Ranch Water District
Irvine Ranch Water District bills monthly: a fixed water service charge by meter size plus budget-based rates per CCF (748 gallons), with tiers set as a percentage of your monthly water budget (FY 2026-27 rates, effective July 1, 2026).
| Use a month | Price per unit (CCF, 748 gallons) |
|---|---|
| Fixed charge | $15.60 a month |
| 0 to 4.8 units | $2.18 |
| 4.8 to 12 units | $2.92 |
| 12 to 16.8 units | $8.03 |
| 16.8 to more | $19.32 |
- Source
- Your drinking water is a blend of local groundwater, groundwater from the Orange County Groundwater Basin managed by the Orange County Water District and, to a lesser degree, surface water imported by the Metropolitan Water District from the State Water Project and the Colorado River Aqueduct.
- Lead
- In 2025, lead and copper tap samples were collected from 72 residences; lead was detected in zero homes, and no sample exceeded the action level.
- Service lines
- IRWD has no lead pipes or galvanized service lines in its water distribution system, confirmed by a 2024 inventory.
- Standards
- In 2025, IRWD drinking water met or exceeded all state and federal standards.
Sewer
IRWD's monthly sewer service charge for a home is set by the average of your three lowest months of water use in the prior calendar year: $44.60 above 10 CCF, $38.10 for 5 to 10 CCF and $29.85 below 5 CCF.
Ways to pay less
- Bigger household or larger yard: ask IRWD for a water budget variance. IRWD sets your water budget assuming 4 residents and 1,300 square feet of landscape for a single-family home; variances are available for more people living in the home, larger landscaped areas or special medical needs, and must be renewed every year. How: Apply online at irwd.com (Request a Water Variance) or call IRWD Customer Service at (949) 453-5300.
- IRWD turf replacement rebate. IRWD customers can receive $2 per square foot for replacing lawn irrigated with drinking or recycled water. Rebate amounts are subject to change and funding availability. How: See IRWD's residential rebates page for program terms and applications.
Pay or manage it
Sources
- IRWD: residential water rates
- IRWD: sewer rates
- IRWD 2026 Water Quality Report (2025 data)
- IRWD: water quality
Checked October 21, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.