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Community Water System · PWS VA6061200

Marshall Waterworks

Warrenton, Virginia 20187 - drinking water served from groundwater sources to 1,728 people, tracked in EPA SDWIS and UCMR5.

1,728
People served
109
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 109 drinking-water violations at Marshall Waterworks, 10% of them health-based - above the Virginia per-system average.

109
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
1,728
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Marshall Waterworks

Marshall Waterworks is a local-owned community water system that delivers drinking water to 1,728 residents in Warrenton, Virginia (Fauquier County) through 640 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 109 total violations for this system , of which 11 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 90 monitoring and reporting violations are on file. The most recent violation on record dates to 2013.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 11 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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. Statewide, 70 of 171 UCMR5-tested systems have reported PFAS detections (40.9%).

Marshall Waterworks's 109 violations sit above the Virginia average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,728
Total Violations
109
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
640
County
Fauquier
School/Daycare
No
MCL Violations
11
Monitoring Violations
90
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 11 2002
Combined Radium (-226 and -228) MCL 4 2009
Trichloroethylene MCL 4 2013
1,2,4-Trichlorobenzene MR 3 2012
Xylenes, Total MR 3 2012
DICHLOROMETHANE MR 3 2012
o-Dichlorobenzene MR 3 2012
1,1-Dichloroethylene MR 3 2012
Tetrachloroethylene MR 3 2012
CHLOROBENZENE MR 3 2012
Benzene MR 3 2012
Styrene MR 3 2012
trans-1,2-Dichloroethylene MR 3 2012
cis-1,2-Dichloroethylene MR 3 2012
Carbon tetrachloride MR 3 2012
1,2-Dichloropropane MR 3 2012
1,2-Dichloroethane MR 3 2012
Vinyl chloride MR 3 2012
Trichloroethylene MR 3 2012
Ethylbenzene MR 3 2012
1,1,1-Trichloroethane MR 3 2012
Toluene MR 3 2012
1,1,2-Trichloroethane MR 3 2012
p-Dichlorobenzene MR 3 2012
Coliform (TCR) MCL 3 1993
Arsenic MR 2 1984
Cadmium MR 2 1984
Chromium MR 2 1984
Fluoride MR 2 1984
Consumer Confidence Rule Other 2 2004

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 Marshall Waterworks.

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 VA6061200 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 Marshall Waterworks 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
2013 Trichloroethylene MCL 4 SDWIS / VA6061200 / 2984
2012 1,2,4-Trichlorobenzene MR 3 SDWIS / VA6061200 / 2378
2012 Xylenes, Total MR 3 SDWIS / VA6061200 / 2955
2012 DICHLOROMETHANE MR 3 SDWIS / VA6061200 / 2964
2012 o-Dichlorobenzene MR 3 SDWIS / VA6061200 / 2968
2012 1,1-Dichloroethylene MR 3 SDWIS / VA6061200 / 2977
2012 Tetrachloroethylene MR 3 SDWIS / VA6061200 / 2987
2012 CHLOROBENZENE MR 3 SDWIS / VA6061200 / 2989
2012 Benzene MR 3 SDWIS / VA6061200 / 2990
2012 Styrene MR 3 SDWIS / VA6061200 / 2996
2012 trans-1,2-Dichloroethylene MR 3 SDWIS / VA6061200 / 2979
2012 cis-1,2-Dichloroethylene MR 3 SDWIS / VA6061200 / 2380
2012 Carbon tetrachloride MR 3 SDWIS / VA6061200 / 2982
2012 1,2-Dichloropropane MR 3 SDWIS / VA6061200 / 2983
2012 1,2-Dichloroethane MR 3 SDWIS / VA6061200 / 2980

How Marshall Waterworks Compares

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

Metric Marshall Waterworks Virginia avg Federal benchmark
Total violations 109 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 None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,728 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Marshall Waterworks water safe to drink? ▼
Marshall Waterworks (PWS ID: VA6061200) has 109 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,728 people using Groundwater sources.
How many people does Marshall Waterworks serve? ▼
Marshall Waterworks serves 1,728 people in Warrenton, Virginia. It is a Local-owned system using Groundwater water sources with 640 service connections.
What type of violations does Marshall Waterworks have? ▼
Marshall Waterworks has 109 total violations: 11 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Marshall Waterworks water? ▼
No PFAS testing data is available for Marshall Waterworks under the EPA's UCMR5 monitoring program.
What water source does Marshall Waterworks use? ▼
Marshall Waterworks 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.