Tap WaterIndex

← PR

Tap water quality report

Lago Guajataca

EPA monitoring tested this supplier for 31 contaminants and detected 1. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

31
contaminants tested
1
detected
10,018
people served
314
health-based violations
PR rankingsLead in PRPFAS in PR
Water source
Surface water
Ownership
Local government
Counties served
Isabela Municipio, San Sebastian 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.

314
health-based violations
565
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2022-03-01 → 2022-03-31
TT Health-based Resolved 2022-03-01 → 2022-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2020-01-01 → 2020-03-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31
MCL Health-based Resolved 2019-10-01 → 2019-12-31

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
0.0062 mg/L 41%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2016
30 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
LAGO GUAJATACA
Phone
787-620-2277

Frequently asked questions about Lago Guajataca

Is Lago Guajataca tap water safe to drink?

EPA monitoring detected 1 contaminant in Lago Guajataca'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 Lago Guajataca's water?

EPA monitoring detected Lead. The full list with the level and data source for each is above.

How many people does Lago Guajataca serve?

Lago Guajataca reports serving 10,018 people in PR, per its EPA record.

Has Lago Guajataca had any water quality violations?

The EPA has 565 violations on file for Lago Guajataca, of which 314 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.