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States → Puerto Rico

GURABO URBANO

PWS ID: PR0005096 · GURABO, Puerto Rico 00778

PFAS Detected

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

Population Served
24,967
Total Violations
540
Health-Based Violations
274
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
9,351
County
Gurabo Municipio
School/Daycare
No
MCL Violations
141
Monitoring Violations
244
Treatment Tech Violations
133

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 94 2005
CARBON, TOTAL TT 59 2014
Interim Enhanced Surface Water Treatment Rule TT 42 2010
TTHM MCL 34 2020
Surface Water Treatment Rule TT 32 2000
Cryptosporidium MR 20 2018
Turbidity MR 16 2018
E. COLI MR 16 2018
Total Haloacetic Acids (HAA5) MCL 13 2010
Coliform (TCR) MR 12 2014
Beryllium, Total MR 10 2007
Lead and Copper Rule MR 8 2015
Surface Water Treatment Rule MR 7 2025
Arsenic MR 7 2010
TTHM MR 6 2016
Total Haloacetic Acids (HAA5) MR 6 2016
Chromium MR 4 2007
Mercury MR 4 2007
Nickel MR 4 2007
Antimony, Total MR 4 2007
Thallium, Total MR 4 2007
Selenium MR 4 2007
DICHLOROMETHANE MR 4 2007
Endrin MR 4 2012
BHC-GAMMA MR 4 2012
Toxaphene MR 4 2012
HEXACHLOROBENZENE MR 4 2012
Chlordane MR 4 2012
Methoxychlor MR 4 2012
Heptachlor MR 4 2012

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 13 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 7/24/2023 0.0072 µg/L 0.005 µg/L Detected
PFHxA 7/24/2023 0.0032 µg/L 0.003 µg/L Detected
PFUnA 7/24/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/24/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/24/2023 0.0044 µg/L 0.003 µg/L Detected
lithium 7/24/2023 <9 µg/L 9 µg/L Not Detected
PFEESA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/24/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFDoA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 7/24/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 7/24/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/24/2023 0.0043 µg/L 0.004 µg/L Detected
NMeFOSAA 7/24/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFPeA 7/24/2023 0.0048 µg/L 0.003 µg/L Detected
NMeFOSAA 7/24/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFHpS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 7/24/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 7/24/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 7/24/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHpA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
lithium 7/24/2023 <9 µg/L 9 µg/L Not Detected
PFOS 7/24/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/24/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/24/2023 0.0034 µg/L 0.003 µg/L Detected
PFUnA 7/24/2023 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 7/24/2023 <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.