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Community Water System · PWS MD0190004

Ewell Waterworks Cooperative

Tylerton, Maryland 21866 - drinking water served from groundwater sources to 75 people, tracked in EPA SDWIS and UCMR5.

75
People served
495
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 495 drinking-water violations at Ewell Waterworks Cooperative, 1% of them health-based - above the Maryland per-system average.

495
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
75
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ewell Waterworks Cooperative

Ewell Waterworks Cooperative is a private-owned community water system that delivers drinking water to 75 residents in Tylerton, Maryland (Somerset County) through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 495 total violations for this system , of which 3 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 456 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 289 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%).

Ewell Waterworks Cooperative's 495 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
75
Total Violations
495
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
30
County
Somerset
School/Daycare
No
MCL Violations
2
Monitoring Violations
456
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 289 2015
Revised Total Coliform Rule MON 36 2023
Lead and Copper Rule MR 22 2010
Consumer Confidence Rule Other 20 2021
Fluoride MR 14 2019
Nitrate MR 10 2017
Asbestos MR 8 1993
Nitrite MR 8 1993
Barium MR 7 2020
Chromium MR 7 2020
Mercury MR 7 2020
Thallium, Total MR 7 2020
Cadmium MR 7 2020
Nickel MR 7 2020
Beryllium, Total MR 7 2020
Antimony, Total MR 7 2020
Selenium MR 7 2020
Arsenic MR 6 2020
Coliform (TCR) MCL 2 1998
LEAD AND COPPER RULE REVISIONS TT 1 2024
LEAD AND COPPER RULE REVISIONS RPT 1 2024

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 Ewell Waterworks Cooperative.

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 MD0190004 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
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / MD0190004 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / MD0190004 / 5200
2023 Revised Total Coliform Rule MON 36 SDWIS / MD0190004 / 8000
2021 Consumer Confidence Rule Other 20 SDWIS / MD0190004 / 7000
2020 Barium MR 7 SDWIS / MD0190004 / 1010
2020 Chromium MR 7 SDWIS / MD0190004 / 1020
2020 Mercury MR 7 SDWIS / MD0190004 / 1035
2020 Thallium, Total MR 7 SDWIS / MD0190004 / 1085
2020 Cadmium MR 7 SDWIS / MD0190004 / 1015
2020 Nickel MR 7 SDWIS / MD0190004 / 1036
2020 Beryllium, Total MR 7 SDWIS / MD0190004 / 1075
2020 Antimony, Total MR 7 SDWIS / MD0190004 / 1074
2020 Selenium MR 7 SDWIS / MD0190004 / 1045
2020 Arsenic MR 6 SDWIS / MD0190004 / 1005
2019 Fluoride MR 14 SDWIS / MD0190004 / 1025

How Ewell Waterworks Cooperative Compares

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

Metric Ewell Waterworks Cooperative Maryland avg Federal benchmark
Total violations 495 18.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 75 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 Ewell Waterworks Cooperative water safe to drink? ▼
Ewell Waterworks Cooperative (PWS ID: MD0190004) has 495 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 75 people using Groundwater sources.
How many people does Ewell Waterworks Cooperative serve? ▼
Ewell Waterworks Cooperative serves 75 people in Tylerton, Maryland. It is a Private-owned system using Groundwater water sources with 30 service connections.
What type of violations does Ewell Waterworks Cooperative have? ▼
Ewell Waterworks Cooperative has 495 total violations: 3 health-based violations (MCL exceedances or treatment failures), 456 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ewell Waterworks Cooperative water? ▼
No PFAS testing data is available for Ewell Waterworks Cooperative under the EPA's UCMR5 monitoring program.
What water source does Ewell Waterworks Cooperative use? ▼
Ewell Waterworks Cooperative 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.