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Non-Transient Non-Community Water System · PWS MD1030038

St. Stephen School

Kingsville, Maryland 21087 - drinking water served from groundwater sources to 350 people, tracked in EPA SDWIS and UCMR5.

350
People served
205
EPA violations
16
Health-based
Untested
UCMR5 result

The verdict

EPA records 205 drinking-water violations at St. Stephen School, 8% of them health-based - above the Maryland per-system average.

205
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
350
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: St. Stephen School

St. Stephen School is a private-owned non-transient non-community water system that delivers drinking water to 350 residents in Kingsville, Maryland (Baltimore County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 205 total violations for this system , of which 16 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 185 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 Coliform (TCR), recorded in 24 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 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%).

St. Stephen School's 205 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
350
Total Violations
205
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Baltimore
School/Daycare
Yes
MCL Violations
15
Monitoring Violations
185
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 24 2010
Lead and Copper Rule MR 24 2023
Coliform (TCR) MCL 15 2008
Nitrate MR 12 2017
Cadmium MR 11 1993
Chromium MR 11 1993
Mercury MR 11 1993
Antimony, Total MR 11 1993
Selenium MR 11 1993
Thallium, Total MR 11 1993
Barium MR 11 1993
Beryllium, Total MR 11 1993
Nickel MR 11 1993
Revised Total Coliform Rule MON 10 2025
Nitrite MR 10 1993
TTHM MR 3 2013
Total Haloacetic Acids (HAA5) MR 3 2013
Lead and Copper Rule TT 1 1996

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 St. Stephen School.

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 MD1030038 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
2025 Revised Total Coliform Rule MON 10 SDWIS / MD1030038 / 8000
2023 Lead and Copper Rule MR 24 SDWIS / MD1030038 / 5000
2017 Nitrate MR 12 SDWIS / MD1030038 / 1040
2013 TTHM MR 3 SDWIS / MD1030038 / 2950
2013 Total Haloacetic Acids (HAA5) MR 3 SDWIS / MD1030038 / 2456
2010 Coliform (TCR) MR 24 SDWIS / MD1030038 / 3100
2008 Coliform (TCR) MCL 15 SDWIS / MD1030038 / 3100
1996 Lead and Copper Rule TT 1 SDWIS / MD1030038 / 5000
1993 Cadmium MR 11 SDWIS / MD1030038 / 1015
1993 Chromium MR 11 SDWIS / MD1030038 / 1020
1993 Mercury MR 11 SDWIS / MD1030038 / 1035
1993 Antimony, Total MR 11 SDWIS / MD1030038 / 1074
1993 Selenium MR 11 SDWIS / MD1030038 / 1045
1993 Thallium, Total MR 11 SDWIS / MD1030038 / 1085
1993 Barium MR 11 SDWIS / MD1030038 / 1010

How St. Stephen School Compares

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

Metric St. Stephen School Maryland avg Federal benchmark
Total violations 205 18.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 16 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 350 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 St. Stephen School water safe to drink? ▼
St. Stephen School (PWS ID: MD1030038) has 205 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 350 people using Groundwater sources.
How many people does St. Stephen School serve? ▼
St. Stephen School serves 350 people in Kingsville, Maryland. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does St. Stephen School have? ▼
St. Stephen School has 205 total violations: 16 health-based violations (MCL exceedances or treatment failures), 185 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in St. Stephen School water? ▼
No PFAS testing data is available for St. Stephen School under the EPA's UCMR5 monitoring program.
What water source does St. Stephen School use? ▼
St. Stephen School 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.
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.