Public water system record
Irvine Ranch Water District
Serves Irvine, Lake Forest, Newport Beach and 4 more places, Orange County, CA · 444,800 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Irvine Ranch Water District in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Irvine Ranch Water District draws water from 25 wells and 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by California, April 2010.
- Record on file since 1997, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 122,603 service lines.
Check whether Irvine Ranch Water District serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2020 | Resolved |
Full record since 1997
EPA's records for Irvine Ranch Water District go back to 1997. Before October 19, 2016 they list 2 health-based violations (2 resolved) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2010 to October 18, 2016 | 1 | 0 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began January 2010, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2010 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 1997 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against Irvine Ranch Water District between 1997 and 2010. The most recent was a compliance order (no penalty) in April 2010.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 21, 2010 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Aug 28, 1997 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Irvine Ranch Water District draws water from 25 wells and 1 surface water intake. It also buys water from Metropolitan Water Dist. of So. Cal. and Joint Regional Water Supply System. It also has emergency connections to Trabuco Canyon Water District, City of Orange, Mesa Water District, City of Newport Beach, El Toro Water District, East Orange County WD - WZ, City of Tustin, South Coast Water District, Santa Margarita Water District and Laguna Beach County WD. 3 other community water systems buy water from Irvine Ranch Water District. 8 other public water systems have emergency connections to Irvine Ranch Water District.
Buys water from
- Metropolitan Water Dist. of So. Cal. La Verne, CA
- Joint Regional Water Supply System Laguna Beach, CA
Emergency or part-time connections to
- Trabuco Canyon Water District Trabuco Canyon, CA
- City of Orange Orange, CA
- Mesa Water District Costa Mesa, CA
- City of Newport Beach Newport Beach, CA
- El Toro Water District Lake Forest, CA
- East Orange County WD - WZ Orange, CA
- City of Tustin Tustin, CA
- South Coast Water District Laguna Beach, CA
- Santa Margarita Water District Rancho Santa Margarita, CA
- Laguna Beach County WD Laguna Beach, CA
Community systems that buy water from it
- Santa Margarita Water District Rancho Santa Margarita, CA
- Serrano Water District Villa Park, CA
- Trabuco Canyon Water District Trabuco Canyon, CA
Annual water quality report
Irvine Ranch Water District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells