CALIF STATE POLYTECHNICAL UNIV - POMONA vs LOS ANGELES-CITY, DEPT. OF WATER & POWER
Water quality comparison — risk levels, violations, PFAS records, and contaminants
Quick Answer
LOS ANGELES-CITY, DEPT. OF WATER & POWER has a lower risk classification (safe). CALIF STATE POLYTECHNICAL UNIV - POMONA has 1 open health-based violation and 0 PFAS records. LOS ANGELES-CITY, DEPT. OF WATER & POWER has 0 open health-based violations and 464 PFAS records.
California · CA1910022
Low Concern
Minor detections below regulatory limits. Routine monitoring adequate.
1
Open violations
0
PFAS records
California · CA1910067
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
464
PFAS records
Head-to-Head Comparison
| Metric | CALIF STATE POLYTECHNICAL UNIV - POMONA | LOS ANGELES-CITY, DEPT. OF WATER & POWER |
|---|---|---|
| State | California | California |
| Risk Level | Low Concern | No Concerns Detected |
| Population Served | 29,854 | 7,751,132 |
| Open Health Violations | 1 | 0 |
| Total Violations | 32 | 4 |
| PFAS Records | None detected | 464 |
| Ownership | State | Local |
| Service Type | Surface water | Surface water |
| City Served | — | Los Angeles |
Contaminants in Violation Records
CALIF STATE POLYTECHNICAL UNIV - POMONA
- Bromate
- Haloacetic Acids (HAA5)
LOS ANGELES-CITY, DEPT. OF WATER & POWER
No named contaminants in violation records.
Key Differences
CALIF STATE POLYTECHNICAL UNIV - POMONA has a low risk rating vs. safe for LOS ANGELES-CITY, DEPT. OF WATER & POWER.
CALIF STATE POLYTECHNICAL UNIV - POMONA has 1 open health-based violation vs. 0 for LOS ANGELES-CITY, DEPT. OF WATER & POWER.
CALIF STATE POLYTECHNICAL UNIV - POMONA has 0 PFAS records vs. 464 for LOS ANGELES-CITY, DEPT. OF WATER & POWER.
What Should I Do?
If either utility shows open violations or elevated PFAS records, consider:
- Installing a reverse osmosis filter — removes PFAS, lead, arsenic, nitrates, and most heavy metals.
- Requesting your utility’s annual Consumer Confidence Report (CCR) for the most current test results.
- Ordering a certified lab water test if you want contaminant-specific data for your address.
Frequently Asked Questions
Which is safer — CALIF STATE POLYTECHNICAL UNIV - POMONA or LOS ANGELES-CITY, DEPT. OF WATER & POWER?
LOS ANGELES-CITY, DEPT. OF WATER & POWER has a lower risk classification (safe). LOS ANGELES-CITY, DEPT. OF WATER & POWER has 0 open health-based violations compared to 1 for the other system.
What does "open health-based violation" mean?
An open health-based violation means a water system has exceeded an EPA Maximum Contaminant Level (MCL) or failed to meet a treatment technique — and the violation has not yet been resolved. These are the most serious type of water quality violations.
How current is this data?
Violation data comes from EPA's Safe Drinking Water Information System (SDWIS), which is updated as utilities report. PFAS data comes from EPA's UCMR 5 monitoring (2023–2025). Risk levels are recalculated daily.
What does PWSID mean?
PWSID stands for Public Water System ID — a unique federal identifier assigned to each community water system. You can use it to look up a system in EPA's ECHO database.