Lead Pipe Map

Lead pipes in Puerto Rico

Puerto Rico's 404 community water systems reported 4 lead and 139 galvanized-requiring-replacement service lines, plus 511,836 of unknown material. That ranks #51 among states for confirmed lead lines.

4Lead
139Galvanized, replace
511,836Unknown
56Systems with lead

<0.1% of the service lines Puerto Rico utilities reported are lead or galvanized requiring replacement, well below the national share of 3.1%. 36% are still unidentified (national: 21%). The largest counts are in Caguas Norte (8), Regional Villalba Toa Vaca (6), Quebradillas Urbano (6). 241 systems haven't reported counts yet.

Since 2025 Q1, reported lead and galvanized lines in Puerto Rico went from 142 to 143 (up 1). See which systems made the most progress.

Systems with confirmed lead lines (56)

Water systemLeadGalv.Unknown% leadPeople
Caguas NorteCaguas447,693<0.1%47,352
Regional Villalba Toa VacaVillalba064,813<0.1%34,259
Quebradillas UrbanoQuebradillas064,169<0.1%27,760
Coamo UrbanoCoamo061,2800.2%4,603
Lares UrbanoLares061315%12,138
AguadillaAguada0517,822<0.1%124,782
Sabana GrandeSabana Grande054,466<0.1%25,832
RoncadorUtuado056140.2%4,734
YaucoYauco046,777<0.1%35,639
Santa Isabel UrbanoPonce045,023<0.1%39,925
Lares EspinoLares044,127<0.1%16,896
SantanaArecibo043,247<0.1%19,657
Manati EastManati042,234<0.1%13,580
Ponce de LeonMayaguez042,180<0.1%11,139
MetropolitanoBayamon03190,837<0.1%1,084,637
Arecibo UrbanoArecibo039,865<0.1%61,626
Aibonito la PlataAibonito032,931<0.1%16,354
Cotto LaurelPonce031,587<0.1%12,979
Aibonito UrbanoAibonito039080.1%5,580
Ciales UrbanoCiales037260.2%4,841
Ponce UrbanoPenuelas0223,012<0.1%113,972
Rio Blanco,vieques,culedraLas Piedras0212,875<0.1%79,822
Las Piedras HumacaoHumacao024,068<0.1%38,897
Hatillo-CamuyHatillo024,031<0.1%28,935
Cayey UrbanoCayey024,031<0.1%18,335
San SebastianSan Sebastian023,585<0.1%25,752
Orocovis UrbanoOrocovis022,515<0.1%16,992
Morovis UrbanoMorovis022,507<0.1%20,927
Utuado UrbanoUtuado022,151<0.1%13,070
Guayanilla UrbanoGuayanilla021,744<0.1%7,302
Cabo RojoCabo Rojo021,733<0.1%20,356
HormigueroHormiguero021,681<0.1%10,587
Salinas UrbanoSalinas021,619<0.1%8,977
QuebradaCamuy021,417<0.1%9,377
Barranquitas UrbanoBarranquitas021,244<0.1%3,538
Jayuya UrbanoJayuya021,166<0.1%7,746
Las MariasLas Marias021,137<0.1%7,193
PugnadoPugnado025940.1%3,591
Fajardo CeibaFajardo019,464<0.1%59,044
IsabelaIsabela016,841<0.1%49,937
Guayama UrbanoArroyo015,898<0.1%37,076
MaguayoDorado014,783<0.1%30,235
Vega Baja UrbanoVega Baja014,671<0.1%26,935
FarallonCayey014,470<0.1%39,388
Juncos - Ceiba SurJuncos014,043<0.1%36,835
Cidra UrbanoCidra013,944<0.1%34,424
San Lorenzo UrbanoSan Lorenzo013,381<0.1%26,470
PenuelasPenuelas013,156<0.1%17,326
Comerio UrbanoComerio012,790<0.1%14,912
Gurabo UrbanoGurabo012,599<0.1%25,469
Guanica UrbanoGuanica011,630<0.1%6,881
Santa IsabelUtuado01342<0.1%3,402
AmeliaJuana Diaz013190.1%2,390
San RafaelArecibo012410.2%1,426
RancheraRancheras012170.2%1,218
CanalizoJayuya011110.3%700

No confirmed lead, but unknown lines remain (103)

Water systemLeadGalv.Unknown% leadPeople
MayaguezAnasco0024,4720%152,342
LajasLajas008,8030%47,350
El YunqueRio Grande007,4000%68,114
Caguas SurCaguas005,9290%34,261
Dorado UrbanoDorado004,5850%37,244
Patillas UrbanoPatillas004,5690%32,222
Yabucoa UrbanoYabucoa002,8460%14,728
Coto SurManati002,4370%15,013
Barceloneta UrbanoBarceloneta002,2850%16,404
NegrosCorozal002,2840%14,939
Aguas Buenas UrbanoAguas Buenas002,0360%13,233
Sabana HoyosArecibo001,9710%15,948
CerrillosPonce001,6950%5,658
Maunabo UrbanoMaunabo001,5640%9,380
Lago GuajatacaIsabela001,5180%10,018
Florida UrbanoFlorida001,5040%10,405
AceitunasVillalba001,4770%9,030
CocosBo Cocos001,4670%9,930
Luquillo UrbanoLuquillo001,2890%9,001
Tierra Nueva RabanosManati001,1640%10,077
GarrochalesArecibo001,1250%7,465
EnsenadaGuanica001,0730%6,130
Las BocasBarranquitas009660%11,022
AruzJuana Diaz009170%5,105
AlturasVega Baja008700%6,325
Corozal UrbanoCorozal008500%6,162
Cedro ArribaNaranjito008300%5,444
DeportivoGuayanilla007740%3,420
BajaderoArecibo006980%3,402
Bo. NuevoBayamon006750%4,961
Jaguas PozasCiales006560%4,699
Adjuntas UrbanoAdjuntas006510%2,870
Piedras BlancasGuayanilla006320%3,351
Quebrada ArenasVega Baja006290%4,472
MirafloresArecibo006220%5,612
JacaguasJuana Diaz006110%4,261
RayoRayo Plata006070%3,853
GarzasAdjuntas005910%3,354
Almirante SurAlmirante005570%2,830
MaricaoMaricao005090%3,455
JagualJagual004990%4,021
CoquiCoqui004800%6,237
Sabana HoyosVega Alta004770%2,360
YahuecasAdjuntas004600%2,665
JacaboasBo Jacaboa004550%2,678
CienegaCamuy004530%3,952
Barrancas NuevoBarrancas004490%2,520
ExperimentalJuana Diaz004420%6,445
Almirante NorteVega Baja004280%4,285
Cain AltoSan German004260%2,416

Showing 50. See all

No lead or unknown lines reported (16)

Systems serving 1,000 or more people. Systems without counts on file are listed as 0.

Water systemLeadGalv.Unknown% leadPeople
Guardia Nacional de PR, Fort AllenJuana Diaz000–3,000
Anones CentroNaranjito000–1,800
Acued. Com. Bo. QuebradillasBarranquitas000–1,762
Acueducto Rural de Tejas de Yabucoa, INCYabucoa000–1,735
Corea MetrallaPenuelas000–1,650
Acued. Bo. GuayabotaYabucoa000–1,608
Corp. de Servicios de Acued. Anones MayaNaranjito000–1,600
Rio LocoGuanica000–1,501
Com. Rancho GrandeNaguabo000–1,428
LavaderoSan Sebastian Municipio County000–1,265
ZamasJayuya000–1,200
CoparCorozal000–1,120
Acued. Correccional GuerreroAguadilla000–1,100
PericheSan German000–1,100
Calabazas Arriba, IncorporadoYabucoa000–1,068
Acued. Com. Sector la SierraCaguas000–1,015

Lead pipes by county in Puerto Rico

Puerto Rico lead pipe questions

How many lead pipes are in Puerto Rico?

Puerto Rico's community water systems reported 4 lead service lines and 139 galvanized lines that must be replaced, for 143 in total. Another 511,836 lines are of unknown material.

Which Puerto Rico water systems have the most lead pipes?

Caguas Norte (8), Regional Villalba Toa Vaca (6), Quebradillas Urbano (6). Counts are lead plus galvanized-requiring-replacement lines.

What share of Puerto Rico service lines are lead?

<0.1% of reported service lines in Puerto Rico are lead or galvanized requiring replacement, well below the national figure of 3.1%. 36% are still unknown, compared with 21% nationally.

How do I find out if my Puerto Rico home has a lead service line?

Search for your water system or ZIP code above, then open your utility's address-level inventory map. You can also check the pipe where it enters your home with a scratch and magnet test.

Source: EPA SDWIS service line inventory, 2026 Q3. Smaller systems with no lead or unknown lines are omitted. See also national rankings.