ARIZONA WATER CO - SUPERIOR vs PHOENIX CITY OF
Water quality comparison — risk levels, violations, PFAS records, and contaminants
Quick Answer
Both utilities share the same risk level (safe). ARIZONA WATER CO - SUPERIOR has 0 open health-based violations and 58 PFAS records. PHOENIX CITY OF has 0 open health-based violations and 1512 PFAS records.
Arizona · AZ0411021
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
58
PFAS records
Arizona · AZ0407025
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
1512
PFAS records
Head-to-Head Comparison
| Metric | ARIZONA WATER CO - SUPERIOR | PHOENIX CITY OF |
|---|---|---|
| State | Arizona | Arizona |
| Risk Level | No Concerns Detected | No Concerns Detected |
| Population Served | 4,393 | 1,695,000 |
| Open Health Violations | 0 | 0 |
| Total Violations | 0 | 6 |
| PFAS Records | 58 | 1512 |
| Ownership | Private | Local |
| Service Type | Groundwater | Surface water |
| City Served | Superior | Phoenix |
Contaminants in Violation Records
ARIZONA WATER CO - SUPERIOR
No named contaminants in violation records.
PHOENIX CITY OF
- Total Coliform
- Cryptosporidium
- Coliform (TCR)
Key Differences
ARIZONA WATER CO - SUPERIOR has 58 PFAS records vs. 1512 for PHOENIX CITY OF.
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 — ARIZONA WATER CO - SUPERIOR or PHOENIX CITY OF?
Both utilities share the same risk level (safe). Both utilities have similar violation profiles — review the full data above to decide based on specific contaminants that concern you.
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.