PlainWater
States → Puerto Rico

SANTA ISABEL URBANO

PWS ID: PR0003904 · SANTA ISABEL, Puerto Rico 00757

PFAS Detected

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

Population Served
39,884
Total Violations
443
Health-Based Violations
24
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
14,938
County
Santa Isabel Municipio
School/Daycare
No
MCL Violations
24
Monitoring Violations
408
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 37 2024
Coliform (TCR) MCL 22 2008
Total Polychlorinated Biphenyls (PCB) MR 12 2019
Chlordane MR 10 2019
Endothall MR 10 2019
Endrin MR 10 2019
ETHYLENE DIBROMIDE MR 10 2010
Heptachlor MR 10 2019
HEXACHLOROBENZENE MR 10 2019
Hexachlorocyclopentadiene MR 10 2019
BHC-GAMMA MR 10 2019
Methoxychlor MR 10 2019
OXAMYL MR 10 2010
Simazine MR 10 2019
1,2-DIBROMO-3-CHLOROPROPANE MR 10 2010
LASSO MR 10 2019
Toxaphene MR 10 2019
Carbofuran MR 10 2010
Diquat MR 10 2019
Heptachlor epoxide MR 10 2019
2,4,5-TP MR 9 2010
2,4-D MR 9 2010
Atrazine MR 9 2010
Benzo(a)pyrene MR 9 2010
Dalapon MR 9 2010
Di(2-ethylhexyl) adipate MR 9 2010
Dinoseb MR 9 2010
Glyphosate MR 9 2010
Pentachlorophenol MR 9 2010
Di(2-ethylhexyl) phthalate MR 9 2010

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 510 samples detected PFAS.

Contaminant Date Result MRL Status
PFUnA 9/26/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 9/26/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 9/26/2023 0.0047 µg/L 0.003 µg/L Detected
PFBA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 9/26/2023 0.0064 µg/L 0.003 µg/L Detected
PFHpA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/26/2023 0.0103 µg/L 0.004 µg/L Detected
lithium 9/26/2023 <9 µg/L 9 µg/L Not Detected
NMeFOSAA 9/26/2023 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/26/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFEESA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/26/2023 <0.008 µg/L 0.008 µg/L Not Detected
8:2 FTS 9/26/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 9/26/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/26/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/26/2023 <0.02 µg/L 0.02 µg/L Not Detected
NEtFOSAA 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/19/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/19/2023 <9 µg/L 9 µg/L Not Detected
PFTrDA 9/19/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 9/19/2023 <0.006 µg/L 0.006 µg/L Not Detected
8:2 FTS 9/19/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/19/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFUnA 9/19/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHpA 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/19/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/19/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/19/2023 <0.004 µg/L 0.004 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.