What's in your
tap water?
Enter your ZIP code to see real EPA data about contaminants, violations, and safety concerns, explained in plain English.
Safety Grade
We compute an overall water quality grade based on violations and health risks, not just legal compliance.
Health Context
Every contaminant comes with plain-English health effects, who's most at risk, and what to do.
Violation History
See every time your water exceeded legal limits or missed required testing, up to 10 years back.
Recommendations
Get specific, actionable suggestions: a filter type, a test kit, or nothing at all.
About this data: ClearWater uses the EPA's Safe Drinking Water Information System (SDWIS). Data is for public water systems only; private wells are not included. Legal limits (MCLs) are minimum standards; some contaminants may still pose health risks below legal thresholds.
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Water systems near
Select the utility that serves your address. Check your water bill if you're unsure.
METROPOLITANO
SAN JUAN, PR · 1,077,332 people served · Surface Water
Data last updated: 2026-05-02
501 total violations on record. No currently active health-based violations.
Health-Based Violations
- Contaminant #2950: MCL (Resolved)
- Contaminant #2950: MCL (Resolved)
- Contaminant #2456: MCL (Resolved)
- Contaminant #2456: MCL (Resolved)
- Contaminant #2456: MCL (Resolved)
- Contaminant #2456: MCL (Resolved)
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PFAS / Forever Chemicals
EPA UCMR5 monitoring data (2023–2025). 8 PFAS compounds detected.
| Compound | Detected | EPA MCL | Status |
|---|---|---|---|
| 6:2 FTS | 0.049 µg/L | - | No federal MCL |
| 8:2 FTS | 0.0153 µg/L | - | No federal MCL |
| PFOA | 0.0109 µg/L | 0.004 µg/L | OVER LIMIT |
| PFBA | 0.0086 µg/L | - | No federal MCL |
| PFOS | 0.0078 µg/L | 0.004 µg/L | OVER LIMIT |
| PFDA | 0.0075 µg/L | - | No federal MCL |
| PFPeA | 0.004 µg/L | - | No federal MCL |
| PFHxA | 0.0035 µg/L | - | No federal MCL |
Source: EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5). MCLs finalized April 2024. Values shown are the maximum detected concentration across all sampling events.
Lead & Copper
What To Do
Violations
No water systems found
We couldn't find a public water system for ZIP code .
- Double-check the ZIP code
- Some rural areas are served by private wells, which are not in the EPA database
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