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HAMILTON, TOWN OF

PWS ID: VA6107150 · HAMILTON, Virginia 20158

HAMILTON, TOWN OF serves 2,240 people in HAMILTON, Virginia using Groundwater water sources. It has 37 recorded EPA violations, including 0 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (5 compounds found).

Water Quality Snapshot: HAMILTON, TOWN OF

HAMILTON, TOWN OF is a local-owned community water system that delivers drinking water to 2,240 residents in HAMILTON, Virginia (Loudoun County) through 700 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 37 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 35 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Nitrate-Nitrite, recorded in 12 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 5 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.0061 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Virginia, EPA tracks 2,821 public water systems serving 7,911,199 people, with 146,670 cumulative violations and 25,642 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 52 violations. HAMILTON, TOWN OF's 37 violations sit below the Virginia average. Statewide, 70 of 171 UCMR5-tested systems have reported PFAS detections (40.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

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

Population Served
2,240
Total Violations
37
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
700
County
Loudoun
School/Daycare
No
MCL Violations
0
Monitoring Violations
35
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate-Nitrite MR 12 2021
Revised Total Coliform Rule MON 4 2019
Chlorine MR 4 2019
Gross Alpha, Excl. Radon and U MR 4 2011
Combined Uranium MR 4 2011
Combined Radium (-226 and -228) MR 4 2011
Coliform (TCR) MR 3 2000

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 10 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFMBA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/15/2023 0.0038 µg/L 0.003 µg/L Detected
PFEESA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/15/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/15/2023 0.0060 µg/L 0.003 µg/L Detected
PFHpA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/15/2023 0.0046 µg/L 0.004 µg/L Detected
PFHxS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 8/15/2023 0.0038 µg/L 0.003 µg/L Detected
PFUnA 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 8/15/2023 0.0061 µg/L 0.004 µg/L Detected
8:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 8/15/2023 0.0034 µg/L 0.003 µg/L Detected
PFMBA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/15/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 8/15/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/15/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/15/2023 0.0030 µg/L 0.003 µg/L Detected
PFDoA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 8/15/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/15/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/15/2023 0.0054 µg/L 0.003 µg/L Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for HAMILTON, TOWN OF.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID VA6107150 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Virginia Drinking Water Authority

Virginia Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects HAMILTON, TOWN OF under EPA-delegated authority.

Open VA regulator portal

Source: Virginia Department of Health — Office of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2021 Nitrate-Nitrite MR 12 SDWIS / VA6107150 / 1038
2019 Revised Total Coliform Rule MON 4 SDWIS / VA6107150 / 8000
2019 Chlorine MR 4 SDWIS / VA6107150 / 0999
2011 Gross Alpha, Excl. Radon and U MR 4 SDWIS / VA6107150 / 4000
2011 Combined Uranium MR 4 SDWIS / VA6107150 / 4006
2011 Combined Radium (-226 and -228) MR 4 SDWIS / VA6107150 / 4010
2000 Coliform (TCR) MR 3 SDWIS / VA6107150 / 3100

How HAMILTON, TOWN OF Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric HAMILTON, TOWN OF Virginia avg Federal benchmark
Total violations 37 52 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 9.1 Indicates a contaminant exceeded a federal MCL
PFAS detection 5 compounds 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,240 2,804 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,821 regulated public water systems in Virginia.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is HAMILTON, TOWN OF water safe to drink? ▼
HAMILTON, TOWN OF (PWS ID: VA6107150) has 37 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 5 PFAS compounds found. This system serves 2,240 people using Groundwater sources.
How many people does HAMILTON, TOWN OF serve? ▼
HAMILTON, TOWN OF serves 2,240 people in HAMILTON, Virginia. It is a Local-owned system using Groundwater water sources with 700 service connections.
What type of violations does HAMILTON, TOWN OF have? ▼
HAMILTON, TOWN OF has 37 total violations: 0 health-based violations (MCL exceedances or treatment failures), 35 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in HAMILTON, TOWN OF water? ▼
Yes. UCMR5 testing detected 5 PFAS compounds in HAMILTON, TOWN OF's water supply: PFPeA, PFBS, PFOS, PFHxA, PFOA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does HAMILTON, TOWN OF use? ▼
HAMILTON, TOWN OF uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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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.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial