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Community Water System · PWS MD0080049

Waldorf - Charles County Dpw

La Plata, Maryland 20646 - drinking water served from surface water sources to 84,296 people, tracked in EPA SDWIS and UCMR5.

84,296
People served
19
EPA violations
0
Health-based
3 PFAS
UCMR5 result

The verdict

EPA records 19 drinking-water violations at Waldorf - Charles County Dpw - above the Maryland per-system average, and UCMR5 testing detected 3 PFAS compounds.

19
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
84,296
People served by this system
3
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Waldorf - Charles County Dpw

Waldorf - Charles County Dpw is a local-owned community water system that delivers drinking water to 84,296 residents in La Plata, Maryland (Charles County) through 31,337 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 19 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 16 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 9 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 3 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 6 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Waldorf - Charles County Dpw's 19 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.

PFAS Detected

3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
84,296
Total Violations
19
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
31,337
County
Charles
School/Daycare
No
MCL Violations
0
Monitoring Violations
16
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 9 2023
Nitrate MR 4 2020
Total Haloacetic Acids (HAA5) MR 1 2004
TTHM MR 1 2004
Fluoride MR 1 2015

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 8 of 1044 samples detected PFAS.

Contaminant Date Result MRL Status
PFTrDA 9/24/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/24/2024 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/24/2024 <6.00 ppt 6.00 ppt Not Detected
8:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 9/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/24/2024 3.10 ppt 3.00 ppt Detected
PFHpS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/24/2024 <20.00 ppt 20.00 ppt Not Detected
PFBA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFMBA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/24/2024 5.10 ppt 3.00 ppt Detected
11Cl-PF3OUdS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFNA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFMPA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFUnA 9/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFPeA 9/24/2024 6.00 ppt 3.00 ppt Detected
PFPeS 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 8/28/2024 <5.00 ppt 5.00 ppt Not Detected
PFUnA 8/28/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/28/2024 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 8/28/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 8/28/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxS 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/28/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/28/2024 <20.00 ppt 20.00 ppt Not Detected
PFBA 8/28/2024 <5.00 ppt 5.00 ppt Not Detected
PFOS 8/28/2024 <4.00 ppt 4.00 ppt Not Detected
ADONA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/28/2024 <4.00 ppt 4.00 ppt Not Detected
PFEESA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/28/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/28/2024 <4.00 ppt 4.00 ppt Not Detected

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 Waldorf - Charles County Dpw.

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 MD0080049 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
2023 Lead and Copper Rule MR 9 SDWIS / MD0080049 / 5000
2020 Nitrate MR 4 SDWIS / MD0080049 / 1040
2015 Fluoride MR 1 SDWIS / MD0080049 / 1025
2004 Total Haloacetic Acids (HAA5) MR 1 SDWIS / MD0080049 / 2456
2004 TTHM MR 1 SDWIS / MD0080049 / 2950

How Waldorf - Charles County Dpw Compares

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

Metric Waldorf - Charles County Dpw Maryland avg Federal benchmark
Total violations 19 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 3 compounds 60.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 84,296 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 Waldorf - Charles County Dpw water safe to drink?
Waldorf - Charles County Dpw (PWS ID: MD0080049) has 19 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 3 PFAS compounds found. This system serves 84,296 people using Surface Water sources.
How many people does Waldorf - Charles County Dpw serve?
Waldorf - Charles County Dpw serves 84,296 people in La Plata, Maryland. It is a Local-owned system using Surface Water water sources with 31,337 service connections.
What type of violations does Waldorf - Charles County Dpw have?
Waldorf - Charles County Dpw has 19 total violations: 0 health-based violations (MCL exceedances or treatment failures), 16 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Waldorf - Charles County Dpw water?
Yes. UCMR5 testing detected 3 PFAS compounds in Waldorf - Charles County Dpw's water supply: PFBS, PFHxA, PFPeA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Waldorf - Charles County Dpw use?
Waldorf - Charles County Dpw uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.