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Community Water System · PWS MD0020217

Patuxent Mobile Estates

Lothian, Maryland 20711 - drinking water served from groundwater sources to 450 people, tracked in EPA SDWIS and UCMR5.

450
People served
24
EPA violations
2
Health-based
Untested
UCMR5 result

The verdict

EPA records 24 drinking-water violations at Patuxent Mobile Estates, 8% of them health-based - above the Maryland per-system average.

24
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
450
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Patuxent Mobile Estates

Patuxent Mobile Estates is a private-owned community water system that delivers drinking water to 450 residents in Lothian, Maryland (Anne Arundel County) through 150 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 24 total violations for this system , of which 2 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 22 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 7 violations (MON). 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%).

Patuxent Mobile Estates's 24 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
450
Total Violations
24
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
150
County
Anne Arundel
School/Daycare
No
MCL Violations
2
Monitoring Violations
22
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 7 2020
TTHM MR 4 2013
Coliform (TCR) MR 4 2009
Total Haloacetic Acids (HAA5) MR 4 2013
Lead and Copper Rule MR 3 2014
Nitrate MCL 2 1985

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 Patuxent Mobile Estates.

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 MD0020217 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
2020 Revised Total Coliform Rule MON 7 SDWIS / MD0020217 / 8000
2014 Lead and Copper Rule MR 3 SDWIS / MD0020217 / 5000
2013 TTHM MR 4 SDWIS / MD0020217 / 2950
2013 Total Haloacetic Acids (HAA5) MR 4 SDWIS / MD0020217 / 2456
2009 Coliform (TCR) MR 4 SDWIS / MD0020217 / 3100
1985 Nitrate MCL 2 SDWIS / MD0020217 / 1040

How Patuxent Mobile Estates Compares

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

Metric Patuxent Mobile Estates Maryland avg Federal benchmark
Total violations 24 18.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 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 450 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 Patuxent Mobile Estates water safe to drink? ▼
Patuxent Mobile Estates (PWS ID: MD0020217) has 24 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 450 people using Groundwater sources.
How many people does Patuxent Mobile Estates serve? ▼
Patuxent Mobile Estates serves 450 people in Lothian, Maryland. It is a Private-owned system using Groundwater water sources with 150 service connections.
What type of violations does Patuxent Mobile Estates have? ▼
Patuxent Mobile Estates has 24 total violations: 2 health-based violations (MCL exceedances or treatment failures), 22 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Patuxent Mobile Estates water? ▼
No PFAS testing data is available for Patuxent Mobile Estates under the EPA's UCMR5 monitoring program.
What water source does Patuxent Mobile Estates use? ▼
Patuxent Mobile Estates 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.