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Puerto Rico: drinking water records

EPA lists 402 community water systems serving homes in Puerto Rico. 96 took part in EPA's national PFAS survey (UCMR 5), and 37 found at least one PFAS above the level laboratories can measure.

In focus402community water systems
Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

0
ZIP reports published
402
community water systems
313
systems with a health-based violation since 2016
16
systems that reached the lead action level since 2016

PFAS in EPA’s final survey

37 of the 96 Puerto Rico systems in EPA’s national PFAS survey found at least one PFAS, and 15 had a PFOA or PFOS yearly average at or above EPA’s limit. See Puerto Rico’s PFAS results by system and compound.

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Sources

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

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