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Community Water System · PWS VA4085525

Mayfield Farms

Rockville, Virginia 23146 - drinking water served from surface water sources to 1,444 people, tracked in EPA SDWIS and UCMR5.

1,444
People served
200
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 200 drinking-water violations at Mayfield Farms - above the Virginia per-system average.

200
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
1,444
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mayfield Farms

Mayfield Farms is a private-owned community water system that delivers drinking water to 1,444 residents in Rockville, Virginia (Hanover County) through 414 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 200 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 200 monitoring and reporting violations are on file. The most recent violation on record dates to 2006.

The most frequently cited contaminant at this system is HEXACHLOROBENZENE, recorded in 4 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%).

Mayfield Farms's 200 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
1,444
Total Violations
200
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
414
County
Hanover
School/Daycare
No
MCL Violations
0
Monitoring Violations
200
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
HEXACHLOROBENZENE MR 4 1996
Methoxychlor MR 4 1996
LASSO MR 4 1996
Dinoseb MR 4 1996
Picloram MR 4 1996
Benzo(a)pyrene MR 4 1996
Di(2-ethylhexyl) adipate MR 4 1996
Di(2-ethylhexyl) phthalate MR 4 1996
Aldicarb MR 4 1996
Aldicarb sulfone MR 4 1996
OXAMYL MR 4 1996
Vinyl chloride MR 4 1998
Benzene MR 4 1998
Atrazine MR 4 1996
Trichloroethylene MR 4 1998
1,1-Dichloroethylene MR 4 1998
p-Dichlorobenzene MR 4 1998
Ethylbenzene MR 4 1998
CHLOROBENZENE MR 4 1998
o-Dichlorobenzene MR 4 1998
trans-1,2-Dichloroethylene MR 4 1998
Xylenes, Total MR 4 1998
Chlordane MR 4 1996
BHC-GAMMA MR 4 1996
Total Polychlorinated Biphenyls (PCB) MR 4 1996
Lead and Copper Rule MR 4 2006
Heptachlor epoxide MR 4 1996
2,4-D MR 4 1996
1,1,1-Trichloroethane MR 4 1998
cis-1,2-Dichloroethylene MR 4 1998

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 Mayfield Farms.

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 VA4085525 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 Mayfield Farms 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
2006 Lead and Copper Rule MR 4 SDWIS / VA4085525 / 5000
2002 Coliform (TCR) MR 4 SDWIS / VA4085525 / 3100
1998 Vinyl chloride MR 4 SDWIS / VA4085525 / 2976
1998 Benzene MR 4 SDWIS / VA4085525 / 2990
1998 Trichloroethylene MR 4 SDWIS / VA4085525 / 2984
1998 1,1-Dichloroethylene MR 4 SDWIS / VA4085525 / 2977
1998 p-Dichlorobenzene MR 4 SDWIS / VA4085525 / 2969
1998 Ethylbenzene MR 4 SDWIS / VA4085525 / 2992
1998 CHLOROBENZENE MR 4 SDWIS / VA4085525 / 2989
1998 o-Dichlorobenzene MR 4 SDWIS / VA4085525 / 2968
1998 trans-1,2-Dichloroethylene MR 4 SDWIS / VA4085525 / 2979
1998 Xylenes, Total MR 4 SDWIS / VA4085525 / 2955
1998 1,1,1-Trichloroethane MR 4 SDWIS / VA4085525 / 2981
1998 cis-1,2-Dichloroethylene MR 4 SDWIS / VA4085525 / 2380
1998 1,2-Dichloropropane MR 4 SDWIS / VA4085525 / 2983

How Mayfield Farms Compares

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

Metric Mayfield Farms Virginia avg Federal benchmark
Total violations 200 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 None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,444 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 Mayfield Farms water safe to drink? ▼
Mayfield Farms (PWS ID: VA4085525) has 200 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,444 people using Surface Water sources.
How many people does Mayfield Farms serve? ▼
Mayfield Farms serves 1,444 people in Rockville, Virginia. It is a Private-owned system using Surface Water water sources with 414 service connections.
What type of violations does Mayfield Farms have? ▼
Mayfield Farms has 200 total violations: 0 health-based violations (MCL exceedances or treatment failures), 200 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mayfield Farms water? ▼
No PFAS testing data is available for Mayfield Farms under the EPA's UCMR5 monitoring program.
What water source does Mayfield Farms use? ▼
Mayfield Farms uses Surface Water 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.