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States → Virginia

ROUND HILL, TOWN OF

PWS ID: VA6107650 · ROUND HILL, Virginia 20142

PFAS Detected

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

Population Served
5,019
Total Violations
52
Health-Based Violations
22
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,662
County
Loudoun
School/Daycare
No
MCL Violations
22
Monitoring Violations
23
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 22 2005
Coliform (TCR) MR 11 2011
Gross Alpha, Excl. Radon and U MR 4 2012
Combined Uranium MR 4 2012
Combined Radium (-226 and -228) MR 4 2012

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 27 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFOS 7/22/2024 0.0079 µg/L 0.004 µg/L Detected
11Cl-PF3OUdS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/22/2024 10.8000 µg/L 9 µg/L Detected
PFNA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 7/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFOA 7/22/2024 0.0054 µg/L 0.004 µg/L Detected
PFDoA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 7/22/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFHxA 7/22/2024 0.0042 µg/L 0.003 µg/L Detected
PFTA 7/22/2024 <0.008 µg/L 0.008 µg/L Not Detected
8:2 FTS 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/22/2024 0.0077 µg/L 0.003 µg/L Detected
PFPeS 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 7/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/22/2024 0.0044 µg/L 0.003 µg/L Detected
PFMPA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/22/2024 <0.004 µg/L 0.004 µg/L Not Detected
lithium 7/22/2024 14.5000 µg/L 9 µg/L Detected
PFEESA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/22/2024 0.0083 µg/L 0.003 µg/L Detected
PFDoA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/22/2024 0.0073 µg/L 0.004 µg/L Detected
NFDHA 7/22/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeA 7/22/2024 0.0035 µg/L 0.003 µg/L Detected
PFHxS 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFMBA 7/22/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMPA 7/22/2024 <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.