Puerto Rico tap water, by utility.

105 utilities with a full report, serving 3.1 million people as they report it. Regulated PFAS turned up at 27 of them.

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All 105, by people served

Puerto Rico utilities, All 105, by people served
Utility	Based in	Serves	Regulated PFAS	Health-based violations since 2016
Metropolitano	Bayamon	1,084,637	PFOA, PFOS	90
Mayaguez	Mayaguez	152,342	None found	13
Aguadilla	Moca	124,782	PFOS, PFBS	42
Ponce Urbano	Penuelas	113,972	PFOA, PFOS, PFHxS, PFBS	40
Rio Blanco,vieques,culedra	Las Piedras	79,822	None found	12
El Yunque	Rio Grande	68,114	None found	18
Arecibo Urbano	Arecibo	61,626	PFOS	1
Fajardo Ceiba	Fajardo	59,044	None found	0
Isabela	Isabela	49,937	None found	6
Caguas Norte	Caguas	47,352	PFOS	0
Lajas	Lajas	47,350	None found	13
Santa Isabel Urbano	Ponce	39,925	PFOS, PFHxS, PFBS	0
Farallon	Cayey	39,388	Not sampled	6
Las Piedras Humacao	Humacao	38,897	PFOS	0
Dorado Urbano	Dorado	37,244	PFOS	1
Guayama Urbano	Guayama	37,076	None found	17
Juncos - Ceiba Sur	Juncos	36,835	PFOA	13
Yauco	Yauco	35,639	None found	5
Cidra Urbano	Cidra	34,424	PFOS, PFHxS	6
Caguas Sur	Caguas	34,261	None found	7
Regional Villalba Toa Vaca	Villalba	34,259	None found	20
Patillas Urbano	Patillas	32,222	PFOS, PFBS	10
Maguayo	Dorado	30,235	None found	0
Hatillo - Camuy	Hatillo	28,935	None found	3
Quebradillas Urbano	Quebradillas	27,760	None found	0
Vega Baja Urbano	Vega Baja	26,935	PFOS, PFBS	5
San Lorenzo Urbano	San Lorenzo	26,470	None found	4
Sabana Grande	Sabana Grande	25,832	None found	17
San Sebastian	San Sebastian	25,752	None found	7
Gurabo Urbano	Gurabo	25,469	PFOS	13
Morovis Urbano	Morovis	20,927	PFOS, PFBS	5
Cabo Rojo	Cabo Rojo	20,356	None found	13
Santana	Arecibo	19,657	None found	0
Cayey Urbano	Cayey	18,335	None found	4
Penuelas	Penuelas	17,326	None found	6
Orocovis Urbano	Orocovis	16,992	None found	20
Lares Espino	Lares	16,896	None found	6
Barceloneta Urbano	Barceloneta	16,404	None found	0
Aibonito la Plata	Aibonito	16,354	PFOS, PFHxS, PFBS	5
Sabana Hoyos	Arecibo	15,948	None found	6
Coto Sur	Manati	15,013	Not sampled	0
Negros	Corozal	14,939	None found	0
Comerio Urbano	Comerio	14,912	None found	25
Yabucoa Urbano	Yabucoa	14,728	None found	2
Manati East	Manati	13,580	PFOS	3
Aguas Buenas Urbano	Aguas Buenas	13,233	PFOA, PFOS	12
Utuado Urbano	Utuado	13,070	None found	1
Cotto Laurel	Ponce	12,979	None found	37
Lares Urbano	Lares	12,138	None found	0
Ponce de Leon	Mayaguez	11,139	Not sampled	0
Las Bocas	Barranquitas	11,022	PFOS	22
Hormiguero	Hormiguero	10,587	None found	0
Florida Urbano	Florida	10,405	None found	1
Tierra Nueva Rabanos	Manati	10,077	Not sampled	0
Lago Guajataca	Isabela	10,018	None found	21
Cocos	Salinas	9,930	None found	1
Maunabo Urbano	Maunabo	9,380	PFOS, PFBS	8
Quebrada	Hatillo	9,377	None found	0
Aceitunas	Villalba	9,030	None found	8
Luquillo Urbano	Luquillo	9,001	None found	44
Salinas Urbano	Salinas	8,977	PFOS, PFHxS, PFBS	0
Jayuya Urbano	Jayuya	7,746	None found	13
Garrochales	Garrochales	7,465	None found	0
Guayanilla Urbano	Ponce	7,302	PFOS, PFBS	0
Las Marias	Las Marias	7,193	None found	4
Guanica Urbano	Guanica	6,881	None found	1
Experimental	Juana Diaz	6,445	PFOA, PFOS, PFBS	0
US Army, Fort Buchanan	Guaynabo	6,411	PFOS, PFHxS	0
Alturas	Vega Baja	6,325	Not sampled	0
Coqui	Salinas	6,237	None found	0
Corozal Urbano	Corozal	6,162	None found	13
Ensenada	Guanica	6,130	None found	0
Cerrillos	Ponce	5,658	None found	0
Miraflores	Arecibo	5,612	Not sampled	0
Aibonito Urbano	Aibonito	5,580	PFOS, PFBS	3
Cedro Arriba	Naranjito	5,444	None found	0
Aruz	Juana Diaz	5,105	PFOS, PFBS	0
Bo. Nuevo	Bayamon	4,961	None found	4
Ciales Urbano	Ciales	4,841	None found	6
Roncador	Utuado	4,734	None found	1
Jaguas Pozas	Ciales	4,699	None found	0
Coamo Urbano	Coamo	4,603	None found	1
Quebrada Arenas	Vega Baja	4,472	Not sampled	0
Almirante Norte	Vega Baja	4,285	Not sampled	3
Jacaguas	Juana Diaz	4,261	PFOS, PFHxS, PFBS	0
Jagual	San Lorenzo	4,021	None found	2
Plata I Y II	Moca	3,978	None found	0
Cienega	Camuy	3,952	None found	0
Rayo	Rayo Plata	3,853	Not sampled	0
Pugnado	Vega Baja	3,591	PFBS	0
La Grua	Yabucoa	3,578	None found	0
Barranquitas Urbano	Barranquitas	3,538	None found	9
Maricao	Maricao	3,455	None found	3
Deportivo	Guayanilla	3,420	None found	0
Bajadero	Arecibo	3,402	None found	0
Santa Isabel	Utuado	3,402	None found	0
Garzas	Adjuntas	3,354	None found	1
Piedras Blancas	Guayanilla	3,351	None found	0
Adjuntas Urbano	Adjuntas	2,870	None found	0
El Rosario	San German	2,374	None found	0
Sabana Grande	Utaudo	1,762	None found	3
Asociacion Acueducto Mulas Jagual, Inc.	Patillas	652	None found	2
Veguitas Gripinas	Jayuya	130	None found	1
Bo. Jacaboa - Higuero	Patillas	70	None found	1
Superacueducto	Toa Baja	25	None found	0

Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.