PFAS in PR drinking water
84 community water systems tested
25%
of tested systems detected PFOA or PFOS
(21/84)
(21/84)
Water systems
PFAS value per system, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Systems that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| System | City | Population | PFAS (ug/L) |
|---|---|---|---|
| AIBONITO LA PLATA | AIBONITO | 16,354 | 0.0467 ug/L |
| EXPERIMENTAL | JUANA DIAZ | 6,445 | 0.0220 ug/L |
| PATILLAS URBANO | PATILLAS | 32,222 | 0.0143 ug/L |
| JACAGUAS | JUANA DIAZ | 4,261 | 0.0124 ug/L |
| SANTA ISABEL URBANO | PONCE | 39,925 | 0.0103 ug/L |
| CIDRA URBANO | CIDRA | 34,424 | 0.0098 ug/L |
| SALINAS URBANO | SALINAS | 8,977 | 0.0096 ug/L |
| CAGUAS NORTE | CAGUAS | 47,352 | 0.0074 ug/L |
| LAS BOCAS | BARRANQUITAS | 11,022 | 0.0072 ug/L |
| ARUZ | JUANA DIAZ | 5,105 | 0.0071 ug/L |
| MOROVIS URBANO | MOROVIS | 20,927 | 0.0067 ug/L |
| MANATI EAST | MANATI | 13,580 | 0.0067 ug/L |
| LAS PIEDRAS HUMACAO | HUMACAO | 38,897 | 0.0054 ug/L |
| AGUADILLA | AGUADA | 124,782 | 0.0053 ug/L |
| JUNCOS - CEIBA SUR | JUNCOS | 36,835 | 0.0048 ug/L |
| MAUNABO URBANO | MAUNABO | 9,380 | 0.0048 ug/L |
| US ARMY, FORT BUCHANAN | GUAYNABO | 6,411 | 0.0046 ug/L |
| VEGA BAJA URBANO | VEGA BAJA | 26,935 | 0.0044 ug/L |
| GURABO URBANO | GURABO | 25,469 | 0.0044 ug/L |
| AIBONITO URBANO | AIBONITO | 5,580 | 0.0043 ug/L |
| AGUAS BUENAS URBANO | AGUAS BUENAS | 13,233 | 0.0042 ug/L |
| MAYAGUEZ | ANASCO | 152,342 | Not detected |
| RIO BLANCO,VIEQUES,CULEDRA | LAS PIEDRAS | 79,822 | Not detected |
| EL YUNQUE | RIO GRANDE | 68,114 | Not detected |
| FAJARDO CEIBA | FAJARDO | 59,044 | Not detected |
| ISABELA | ISABELA | 49,937 | Not detected |
| LAJAS | LAJAS | 47,350 | Not detected |
| GUAYAMA URBANO | ARROYO | 37,076 | Not detected |
| YAUCO | YAUCO | 35,639 | Not detected |
| CAGUAS SUR | CAGUAS | 34,261 | Not detected |
| REGIONAL VILLALBA TOA VACA | VILLALBA | 34,259 | Not detected |
| QUEBRADILLAS URBANO | QUEBRADILLAS | 27,760 | Not detected |
| SAN LORENZO URBANO | SAN LORENZO | 26,470 | Not detected |
| SABANA GRANDE | SABANA GRANDE | 25,832 | Not detected |
| SAN SEBASTIAN | SAN SEBASTIAN | 25,752 | Not detected |
| CABO ROJO | CABO ROJO | 20,356 | Not detected |
| SANTANA | ARECIBO | 19,657 | Not detected |
| CAYEY URBANO | CAYEY | 18,335 | Not detected |
| PENUELAS | PENUELAS | 17,326 | Not detected |
| OROCOVIS URBANO | OROCOVIS | 16,992 | Not detected |
| LARES ESPINO | LARES | 16,896 | Not detected |
| BARCELONETA URBANO | BARCELONETA | 16,404 | Not detected |
| NEGROS | COROZAL | 14,939 | Not detected |
| COMERIO URBANO | COMERIO | 14,912 | Not detected |
| UTUADO URBANO | UTUADO | 13,070 | Not detected |
| LARES URBANO | LARES | 12,138 | Not detected |
| HORMIGUERO | HORMIGUERO | 10,587 | Not detected |
| FLORIDA URBANO | FLORIDA | 10,405 | Not detected |
| LAGO GUAJATACA | ISABELA | 10,018 | Not detected |
| QUEBRADA | CAMUY | 9,377 | Not detected |
| ACEITUNAS | VILLALBA | 9,030 | Not detected |
| LUQUILLO URBANO | LUQUILLO | 9,001 | Not detected |
| JAYUYA URBANO | JAYUYA | 7,746 | Not detected |
| GARROCHALES | ARECIBO | 7,465 | Not detected |
| GUAYANILLA URBANO | GUAYANILLA | 7,302 | Not detected |
| LAS MARIAS | LAS MARIAS | 7,193 | Not detected |
| GUANICA URBANO | GUANICA | 6,881 | Not detected |
| COQUI | COQUI | 6,237 | Not detected |
| COROZAL URBANO | COROZAL | 6,162 | Not detected |
| ENSENADA | GUANICA | 6,130 | Not detected |
| CERRILLOS | PONCE | 5,658 | Not detected |
| CEDRO ARRIBA | NARANJITO | 5,444 | Not detected |
| BO. NUEVO | BAYAMON | 4,961 | Not detected |
| CIALES URBANO | CIALES | 4,841 | Not detected |
| RONCADOR | UTUADO | 4,734 | Not detected |
| JAGUAS POZAS | CIALES | 4,699 | Not detected |
| COAMO URBANO | COAMO | 4,603 | Not detected |
| JAGUAL | JAGUAL | 4,021 | Not detected |
| PLATA I Y II | MOCA | 3,978 | Not detected |
| CIENEGA | CAMUY | 3,952 | Not detected |
| PUGNADO | PUGNADO | 3,591 | Not detected |
| MARICAO | MARICAO | 3,455 | Not detected |
| DEPORTIVO | GUAYANILLA | 3,420 | Not detected |
| BAJADERO | ARECIBO | 3,402 | Not detected |
| SANTA ISABEL | UTUADO | 3,402 | Not detected |
| GARZAS | ADJUNTAS | 3,354 | Not detected |
| PIEDRAS BLANCAS | GUAYANILLA | 3,351 | Not detected |
| ADJUNTAS URBANO | ADJUNTAS | 2,870 | Not detected |
| EL ROSARIO | SAN GERMAN | 2,374 | Not detected |
| SABANA GRANDE | UTAUDO | 1,762 | Not detected |
| ASOCIACION ACUEDUCTO MULAS JAGUAL, INC. | PATILLAS | 652 | Not detected |
| VEGUITAS GRIPINAS | JAYUYA | 130 | Not detected |
| BO. JACABOA- HIGUERO | PATILLAS | 70 | Not detected |
| SUPERACUEDUCTO | SAN JUAN | 25 | Not detected |