PlainWater
States → Puerto Rico

EXPERIMENTAL

PWS ID: PR0004604 · JUANA DIAZ, Puerto Rico 00795

PFAS Detected

7 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
6,427
Total Violations
60
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,407
County
Juana Diaz Municipio
School/Daycare
No
MCL Violations
4
Monitoring Violations
48
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 15 2016
Nitrate MCL 4 2003
Consumer Confidence Rule Other 4 2020
TTHM MR 3 2014
Total Haloacetic Acids (HAA5) MR 3 2014
BHC-GAMMA MR 2 2024
Hexachlorocyclopentadiene MR 2 2024
Heptachlor epoxide MR 2 2024
HEXACHLOROBENZENE MR 2 2024
Endrin MR 2 2024
Heptachlor MR 2 2024
Nitrate MR 2 2024
Toxaphene MR 2 2024
Methoxychlor MR 2 2024
Chlordane MR 2 2024
Total Polychlorinated Biphenyls (PCB) MR 1 2019
Atrazine MR 1 2019
Glyphosate MR 1 2019
Benzo(a)pyrene MR 1 2019
Simazine MR 1 2019
LASSO MR 1 2019
Di(2-ethylhexyl) adipate MR 1 2019

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 24 of 300 samples detected PFAS.

Contaminant Date Result MRL Status
6:2 FTS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 8/20/2024 0.1100 µg/L 0.003 µg/L Detected
PFMBA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/20/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 8/20/2024 <9 µg/L 9 µg/L Not Detected
4:2 FTS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/20/2024 0.0540 µg/L 0.005 µg/L Detected
PFPeS 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/20/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 8/20/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 8/20/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 8/20/2024 0.0420 µg/L 0.003 µg/L Detected
PFHpA 8/20/2024 0.0130 µg/L 0.003 µg/L Detected
PFNA 8/20/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/20/2024 0.0047 µg/L 0.004 µg/L Detected
9Cl-PF3ONS 8/20/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/20/2024 0.2600 µg/L 0.003 µg/L Detected
PFUnA 8/20/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/20/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 8/20/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 8/20/2024 0.0220 µg/L 0.004 µg/L Detected
PFPeA 7/10/2024 0.0716 µg/L 0.003 µg/L Detected
PFBS 7/10/2024 0.0301 µg/L 0.003 µg/L Detected
PFHpA 7/10/2024 0.0083 µg/L 0.003 µg/L Detected
PFOS 7/10/2024 0.0041 µg/L 0.004 µg/L Detected
PFOA 7/10/2024 0.0129 µg/L 0.004 µg/L Detected
PFHxA 7/10/2024 0.1534 µg/L 0.003 µg/L Detected
PFBA 7/10/2024 0.0384 µg/L 0.005 µg/L Detected
PFBS 5/17/2023 0.0035 µg/L 0.003 µg/L Detected
PFDoA 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/17/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/17/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 5/17/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/17/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/17/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/17/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/17/2023 <0.002 µg/L 0.002 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.