Tap WaterIndex

Tap water quality report

Metropolitano

EPA monitoring tested this supplier for 31 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

31
contaminants tested
9
detected
1,084,637
people served
778
health-based violations
Water source
Surface water
Ownership
Local government
Counties served
Bayamon Municipio, San Juan Municipio, Toa Alta Municipio

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

778
health-based violations
1,622
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-05-01 → 2025-05-31
TT Health-based Resolved 2025-03-01 → 2025-03-31
TT Health-based Resolved 2025-03-01 → 2025-03-31
TT Health-based Resolved 2024-12-01 → 2024-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0078 µg/L 10/20 2025
Pfba 0.0086 µg/L 6/20 2025
Pfhxa 0.0035 µg/L 2/20 2025
PFOA 0.0109 µg/L 2/20 2025
Pfpea 0.0040 µg/L 2/20 2025
6:2 Fts 0.0490 µg/L 1/20 2025
8:2 Fts 0.0153 µg/L 1/20 2025
Pfda 0.0075 µg/L 1/20 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 31/31 LCR 2016
22 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPFBSPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaLithium

Frequently asked questions about Metropolitano

Is Metropolitano tap water safe to drink?

EPA monitoring detected 9 contaminants in Metropolitano's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Metropolitano's water?

EPA monitoring detected Lead, PFOS, Pfba, Pfhxa, PFOA, and others. The full list with the level and data source for each is above.

How many people does Metropolitano serve?

Metropolitano reports serving 1,084,637 people, per its EPA record.

Has Metropolitano had any water quality violations?

The EPA has 1622 violations on file for Metropolitano, of which 778 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.