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States → Virginia

ARLINGTON COUNTY

PWS ID: VA6013010 · ARLINGTON, Virginia 22206

PFAS Detected

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

Population Served
215,000
Total Violations
15
Health-Based Violations
5
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
37,076
County
Arlington
School/Daycare
No
MCL Violations
5
Monitoring Violations
7
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 5 1994
Coliform (TCR) MR 4 2007
Chlorine MR 3 2007

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/6/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/6/2024 0.0033 µg/L 0.003 µg/L Detected
PFDoA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/6/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFOA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 8/6/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/6/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/6/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFHpS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMPA 8/6/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/6/2024 <0.02 µg/L 0.02 µg/L Not Detected
HFPO-DA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 8/6/2024 0.0045 µg/L 0.003 µg/L Detected
lithium 8/6/2024 <9 µg/L 9 µg/L Not Detected
8:2 FTS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/6/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/6/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/14/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 5/14/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/14/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 5/14/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/14/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/14/2024 <0.007 µg/L 0.007 µg/L Not Detected
NFDHA 5/14/2024 <0.02 µg/L 0.02 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.