ACQUINTON/HAMILTON HOLMES

Q: Is ACQUINTON/HAMILTON HOLMES water safe to drink?

ACQUINTON/HAMILTON HOLMES (PWS ID: VA4101010) has 45 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 1,760 people using Groundwater sources.

Q: What type of violations does ACQUINTON/HAMILTON HOLMES have?

ACQUINTON/HAMILTON HOLMES has 45 total violations: 11 health-based violations (MCL exceedances or treatment failures), 34 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in ACQUINTON/HAMILTON HOLMES water?

Yes. UCMR5 testing detected 1 PFAS compound in ACQUINTON/HAMILTON HOLMES's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does ACQUINTON/HAMILTON HOLMES use?

ACQUINTON/HAMILTON HOLMES uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: VA4101010 · KING WILLIAM, Virginia 23086

ACQUINTON/HAMILTON HOLMES serves 1,760 people in KING WILLIAM, Virginia using Groundwater water sources. It has 45 recorded EPA violations, including 11 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: ACQUINTON/HAMILTON HOLMES

ACQUINTON/HAMILTON HOLMES is a local-owned non-transient non-community water system that delivers drinking water to 1,760 residents in KING WILLIAM, Virginia (King William County) through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 45 total violations for this system , of which 11 (24%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 34 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 16 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 14.7 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. ACQUINTON/HAMILTON HOLMES's 45 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

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

Population Served

1,760

Total Violations

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Non-Transient Non-Community
Owner Type: Local
Connections: 4
County: King William
School/Daycare: Yes
MCL Violations: 11
Monitoring Violations: 34
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	16	2016
Coliform (TCR)	MCL	11	1999
Lead and Copper Rule	MR	8	2013
Total Haloacetic Acids (HAA5)	MR	4	2015
TTHM	MR	3	2015
Revised Total Coliform Rule	MON	3	2017

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFHpS	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NFDHA	8/23/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFHxS	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	8/23/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	8/23/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOA	8/23/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	8/23/2023	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	8/23/2023	<0.002 µg/L	0.002 µg/L	Not Detected
ADONA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBA	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBS	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
4:2 FTS	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFMPA	8/23/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFPeA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	8/23/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	8/23/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFTA	8/23/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFTrDA	8/23/2023	<0.007 µg/L	0.007 µg/L	Not Detected
NEtFOSAA	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	8/23/2023	<0.006 µg/L	0.006 µg/L	Not Detected
lithium	8/23/2023	11.0000 µg/L	9 µg/L	Detected
HFPO-DA	8/23/2023	<0.005 µg/L	0.005 µg/L	Not Detected
11Cl-PF3OUdS	2/21/2023	<0.005 µg/L	0.005 µg/L	Not Detected
lithium	2/21/2023	14.7000 µg/L	9 µg/L	Detected
NEtFOSAA	2/21/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTA	2/21/2023	<0.008 µg/L	0.008 µg/L	Not Detected
NMeFOSAA	2/21/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFBS	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	2/21/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	2/21/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOA	2/21/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	2/21/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFUnA	2/21/2023	<0.002 µg/L	0.002 µg/L	Not Detected
8:2 FTS	2/21/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeS	2/21/2023	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	2/21/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFEESA	2/21/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	2/21/2023	<0.003 µg/L	0.003 µg/L	Not 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 ACQUINTON/HAMILTON HOLMES.

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 VA4101010 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 ACQUINTON/HAMILTON HOLMES 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
2017	Revised Total Coliform Rule	MON	3	SDWIS / VA4101010 / 8000
2016	Coliform (TCR)	MR	16	SDWIS / VA4101010 / 3100
2015	Total Haloacetic Acids (HAA5)	MR	4	SDWIS / VA4101010 / 2456
2015	TTHM	MR	3	SDWIS / VA4101010 / 2950
2013	Lead and Copper Rule	MR	8	SDWIS / VA4101010 / 5000
1999	Coliform (TCR)	MCL	11	SDWIS / VA4101010 / 3100

How ACQUINTON/HAMILTON HOLMES Compares

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

Metric	ACQUINTON/HAMILTON HOLMES	Virginia avg	Federal benchmark
Total violations	45	52	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	11	9.1	Indicates a contaminant exceeded a federal MCL
PFAS detection	1 compound	40.9%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	1,760	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 ACQUINTON/HAMILTON HOLMES water safe to drink? ▼

ACQUINTON/HAMILTON HOLMES (PWS ID: VA4101010) has 45 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 1,760 people using Groundwater sources.

How many people does ACQUINTON/HAMILTON HOLMES serve? ▼

ACQUINTON/HAMILTON HOLMES serves 1,760 people in KING WILLIAM, Virginia. It is a Local-owned system using Groundwater water sources with 4 service connections.

What type of violations does ACQUINTON/HAMILTON HOLMES have? ▼

ACQUINTON/HAMILTON HOLMES has 45 total violations: 11 health-based violations (MCL exceedances or treatment failures), 34 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in ACQUINTON/HAMILTON HOLMES water? ▼

Yes. UCMR5 testing detected 1 PFAS compound in ACQUINTON/HAMILTON HOLMES's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does ACQUINTON/HAMILTON HOLMES use? ▼

ACQUINTON/HAMILTON HOLMES uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

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.

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