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States → North Carolina

UNION COUNTY WATER SYSTEM

PWS ID: NC0190413 · MONROE, North Carolina 28110

PFAS Detected

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

Population Served
167,554
Total Violations
45
Health-Based Violations
24
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
65,966
County
Union
School/Daycare
No
MCL Violations
24
Monitoring Violations
13
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Haloacetic Acids (HAA5) MCL 15 2017
Revised Total Coliform Rule MCL 7 2020
Coliform (TCR) MR 5 2009
Lead and Copper Rule MR 5 2010
Public Notice Other 4 2004
Coliform (TCR) MCL 2 1993
Revised Total Coliform Rule RPT 1 2018
Consumer Confidence Rule Other 1 2024
Combined Radium (-226 and -228) MR 1 1980
Gross Alpha, Excl. Radon and U MR 1 1980
Gross Beta Particle Activity MR 1 1980

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 19 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
NEtFOSAA 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
lithium 7/3/2023 <9 µg/L 9 µg/L Not Detected
PFOS 7/3/2023 0.0049 µg/L 0.004 µg/L Detected
PFHxS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 7/3/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 7/3/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFDA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/3/2023 0.0035 µg/L 0.003 µg/L Detected
PFUnA 7/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 7/3/2023 <0.008 µg/L 0.008 µg/L Not Detected
NFDHA 7/3/2023 <0.02 µg/L 0.02 µg/L Not Detected
11Cl-PF3OUdS 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/3/2023 0.0036 µg/L 0.003 µg/L Detected
PFMPA 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFPeS 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 7/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/3/2023 <9 µg/L 9 µg/L Not Detected
PFHpA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/3/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFHxA 7/3/2023 0.0067 µg/L 0.003 µg/L Detected
PFEESA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/3/2023 0.0055 µg/L 0.005 µg/L Detected
PFTrDA 7/3/2023 <0.007 µg/L 0.007 µg/L Not Detected
8:2 FTS 7/3/2023 <0.005 µg/L 0.005 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.