OLAA-MOUNTAIN VIEW vs HNL-WINDWARD-PEARL HARBOR
Water quality comparison — risk levels, violations, PFAS records, and contaminants
Quick Answer
Both utilities share the same risk level (safe). OLAA-MOUNTAIN VIEW has 0 open health-based violations and 116 PFAS records. HNL-WINDWARD-PEARL HARBOR has 0 open health-based violations and 2610 PFAS records.
Hawaii · HI0000112
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
116
PFAS records
Hawaii · HI0000331
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
2610
PFAS records
Head-to-Head Comparison
| Metric | OLAA-MOUNTAIN VIEW | HNL-WINDWARD-PEARL HARBOR |
|---|---|---|
| State | Hawaii | Hawaii |
| Risk Level | No Concerns Detected | No Concerns Detected |
| Population Served | 6,467 | 631,389 |
| Open Health Violations | 0 | 0 |
| Total Violations | 0 | 0 |
| PFAS Records | 116 | 2610 |
| Ownership | Local | Local |
| Service Type | Groundwater | Groundwater |
| City Served | Olaa-Mt.View | Honolulu-Windward-Pearlharbor |
Key Differences
OLAA-MOUNTAIN VIEW has 116 PFAS records vs. 2610 for HNL-WINDWARD-PEARL HARBOR.
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 — OLAA-MOUNTAIN VIEW or HNL-WINDWARD-PEARL HARBOR?
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.