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Transient Non-Community Water System · PWS MD1151064

Glenvilah Center II [12948 A-F]

Potomac, Maryland 20854 - drinking water served from groundwater sources to 93 people, tracked in EPA SDWIS and UCMR5.

93
People served
101
EPA violations
46
Health-based
Untested
UCMR5 result

The verdict

EPA records 101 drinking-water violations at Glenvilah Center II [12948 A-F], 46% of them health-based - above the Maryland per-system average.

101
Total EPA violations on record
46%
Health-based (MCL / treatment failure)
93
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Glenvilah Center II [12948 A-F]

Glenvilah Center II [12948 A-F] is a private-owned transient non-community water system that delivers drinking water to 93 residents in Potomac, Maryland (Montgomery County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 101 total violations for this system , of which 46 (46%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 50 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 44 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Maryland, EPA tracks 3,215 public water systems serving 6,070,211 people, with 60,496 cumulative violations and 18,132 health-based violations on record. About 80% of systems in the state carry at least one violation, and state-wide the average per system is 18.8 violations. Statewide, 50 of 83 UCMR5-tested systems have reported PFAS detections (60.2%).

Glenvilah Center II [12948 A-F]'s 101 violations sit above the Maryland 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
93
Total Violations
101
Health-Based Violations
46
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Montgomery
School/Daycare
No
MCL Violations
46
Monitoring Violations
50
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 44 2014
Nitrate MR 31 2017
Coliform (TCR) MR 17 2010
Public Notice Other 4 2011
Revised Total Coliform Rule MON 2 2017
Nitrate MCL 2 2007
Revised Total Coliform Rule RPT 1 2016

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 Glenvilah Center II [12948 A-F].

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 MD1151064 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Maryland Drinking Water Authority

Maryland's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find MD regulator via EPA SDWIS

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 Nitrate MR 31 SDWIS / MD1151064 / 1040
2017 Revised Total Coliform Rule MON 2 SDWIS / MD1151064 / 8000
2016 Revised Total Coliform Rule RPT 1 SDWIS / MD1151064 / 8000
2014 Coliform (TCR) MCL 44 SDWIS / MD1151064 / 3100
2011 Public Notice Other 4 SDWIS / MD1151064 / 7500
2010 Coliform (TCR) MR 17 SDWIS / MD1151064 / 3100
2007 Nitrate MCL 2 SDWIS / MD1151064 / 1040

How Glenvilah Center II [12948 A-F] Compares

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

Metric Glenvilah Center II [12948 A-F] Maryland avg Federal benchmark
Total violations 101 18.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 46 5.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 93 1,888 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,215 regulated public water systems in Maryland.

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 Glenvilah Center II [12948 A-F] water safe to drink? ▼
Glenvilah Center II [12948 A-F] (PWS ID: MD1151064) has 101 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 93 people using Groundwater sources.
How many people does Glenvilah Center II [12948 A-F] serve? ▼
Glenvilah Center II [12948 A-F] serves 93 people in Potomac, Maryland. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Glenvilah Center II [12948 A-F] have? ▼
Glenvilah Center II [12948 A-F] has 101 total violations: 46 health-based violations (MCL exceedances or treatment failures), 50 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Glenvilah Center II [12948 A-F] water? ▼
No PFAS testing data is available for Glenvilah Center II [12948 A-F] under the EPA's UCMR5 monitoring program.
What water source does Glenvilah Center II [12948 A-F] use? ▼
Glenvilah Center II [12948 A-F] uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.