Non-Transient Non-Community Water System · PWS VA2069805
Winchester Montessori School
Winchester, Virginia 22603 - drinking water served from groundwater sources to 55 people, tracked in EPA SDWIS and UCMR5.
- 55
- People served
- 12
- EPA violations
- 0
- Health-based
- Untested
- UCMR5 result
The verdict
EPA records 12 drinking-water violations at Winchester Montessori School - below the Virginia per-system average.
- 12
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
- 55
- People served by this system
- N/A
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Winchester Montessori School
Winchester Montessori School is a private-owned non-transient non-community water system that delivers drinking water to 55 residents in Winchester, Virginia (Frederick County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 12 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 10 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Nitrate-Nitrite, 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%).
Winchester Montessori School's 12 violations sit below 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.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Frederick
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 10
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate-Nitrite | MR | 4 | 2023 |
| Chlorine | MR | 4 | 2018 |
| Revised Total Coliform Rule | MON | 2 | 2019 |
| Public Notice | Other | 2 | 2025 |
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 Winchester Montessori School.
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 VA2069805 on SDWISSource: EPA SDWIS Federal Reports Search
Virginia Drinking Water Authority
Virginia Department of Health, Office of Drinking Water is the primacy agency that licenses and inspects Winchester Montessori School under EPA-delegated authority.
Open VA regulator portalSource: 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 |
|---|---|---|---|---|
| 2025 | Public Notice | Other | 2 | SDWIS / VA2069805 / 7500 |
| 2023 | Nitrate-Nitrite | MR | 4 | SDWIS / VA2069805 / 1038 |
| 2019 | Revised Total Coliform Rule | MON | 2 | SDWIS / VA2069805 / 8000 |
| 2018 | Chlorine | MR | 4 | SDWIS / VA2069805 / 0999 |
How Winchester Montessori School Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Winchester Montessori School | Virginia avg | Federal benchmark |
|---|---|---|---|
| Total violations | 12 | 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 | 55 | 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 Winchester Montessori School water safe to drink? ▼
How many people does Winchester Montessori School serve? ▼
What type of violations does Winchester Montessori School have? ▼
Has PFAS been detected in Winchester Montessori School water? ▼
What water source does Winchester Montessori School use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
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.