Public water system record
City of Chino Hills
Serves Chino Hills, San Bernardino County, CA · 76,414 people served
Federal records show no health-based violations and no monitoring or reporting issues for City of Chino Hills 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
- 0
Key facts
- City of Chino Hills draws water from 4 wells.
- Record on file since 1984, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 21,648 service lines.
Check whether City of Chino Hills 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, and no monitoring or reporting violations either.
Full record since 1984
EPA's records for City of Chino Hills go back to 1984. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 1994, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Sep 1, 1984 | Archived |
Where the water comes from
City of Chino Hills draws water from 4 wells. It also buys water from Chino Basin Desalter Auth. - Desalter 1, Water Facilities Authority-Jpa and Monte Vista WD. 1 other community water system buys water from City of Chino Hills.
Buys water from
- Chino Basin Desalter Auth. - Desalter 1 Ontario, CA
- Water Facilities Authority-Jpa Upland, CA
- Monte Vista WD Montclair, CA
Community systems that buy water from it
- Monte Vista WD Montclair, CA
Annual water quality report
City of Chino Hills 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