PlainWater

BEACHES WATER CO-OPERATIVE

PWS ID: MD0040009 · ST. LEONARD, Maryland 20685

BEACHES WATER CO-OPERATIVE serves 2,000 people in ST. LEONARD, Maryland using Groundwater water sources. It has 35 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: BEACHES WATER CO-OPERATIVE

BEACHES WATER CO-OPERATIVE is a private-owned community water system that delivers drinking water to 2,000 residents in ST. LEONARD, Maryland (Calvert County) through 800 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 35 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 33 monitoring and reporting violations are on file. The most recent violation on record dates to 2008.

The most frequently cited contaminant at this system is Thallium, Total, recorded in 3 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. BEACHES WATER CO-OPERATIVE's 35 violations sit above the Maryland average. Statewide, 50 of 83 UCMR5-tested systems have reported PFAS detections (60.2%). 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
2,000
Total Violations
35
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
800
County
Calvert
School/Daycare
No
MCL Violations
0
Monitoring Violations
33
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Thallium, Total MR 3 1996
Selenium MR 3 1996
Barium MR 3 1996
Cadmium MR 3 1996
Mercury MR 3 1996
Beryllium, Total MR 3 1996
Antimony, Total MR 3 1996
Nickel MR 3 1996
Chromium MR 3 1996
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 2008
Consumer Confidence Rule Other 2 2003
Arsenic MR 2 1996
Fluoride MR 2 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 BEACHES WATER CO-OPERATIVE.

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 MD0040009 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
2008 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 SDWIS / MD0040009 / 0600
2003 Consumer Confidence Rule Other 2 SDWIS / MD0040009 / 7000
1996 Thallium, Total MR 3 SDWIS / MD0040009 / 1085
1996 Selenium MR 3 SDWIS / MD0040009 / 1045
1996 Barium MR 3 SDWIS / MD0040009 / 1010
1996 Cadmium MR 3 SDWIS / MD0040009 / 1015
1996 Mercury MR 3 SDWIS / MD0040009 / 1035
1996 Beryllium, Total MR 3 SDWIS / MD0040009 / 1075
1996 Antimony, Total MR 3 SDWIS / MD0040009 / 1074
1996 Nickel MR 3 SDWIS / MD0040009 / 1036
1996 Chromium MR 3 SDWIS / MD0040009 / 1020
1996 Arsenic MR 2 SDWIS / MD0040009 / 1005
1996 Fluoride MR 2 SDWIS / MD0040009 / 1025

How BEACHES WATER CO-OPERATIVE Compares

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

Metric BEACHES WATER CO-OPERATIVE Maryland avg Federal benchmark
Total violations 35 18.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 2,000 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is BEACHES WATER CO-OPERATIVE water safe to drink?
BEACHES WATER CO-OPERATIVE (PWS ID: MD0040009) has 35 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,000 people using Groundwater sources.
How many people does BEACHES WATER CO-OPERATIVE serve?
BEACHES WATER CO-OPERATIVE serves 2,000 people in ST. LEONARD, Maryland. It is a Private-owned system using Groundwater water sources with 800 service connections.
What type of violations does BEACHES WATER CO-OPERATIVE have?
BEACHES WATER CO-OPERATIVE has 35 total violations: 0 health-based violations (MCL exceedances or treatment failures), 33 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in BEACHES WATER CO-OPERATIVE water?
No PFAS testing data is available for BEACHES WATER CO-OPERATIVE under the EPA's UCMR5 monitoring program.
What water source does BEACHES WATER CO-OPERATIVE use?
BEACHES WATER CO-OPERATIVE 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.

Explore PlainWater

Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Related

Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial