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GRANITE MOBILE HOME PARK

PWS ID: MD0030204 · BETHESDA, Maryland 20814

GRANITE MOBILE HOME PARK serves 96 people in BETHESDA, Maryland using Groundwater water sources. It has 67 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: GRANITE MOBILE HOME PARK

GRANITE MOBILE HOME PARK is a private-owned community water system that delivers drinking water to 96 residents in BETHESDA, Maryland (Baltimore County) through 52 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 67 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 54 monitoring and reporting violations are on file. The most recent violation on record dates to 2015.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 18 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. GRANITE MOBILE HOME PARK's 67 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
96
Total Violations
67
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
52
County
Baltimore
School/Daycare
No
MCL Violations
0
Monitoring Violations
54
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 18 2014
Consumer Confidence Rule Other 12 2013
Lead and Copper Rule MR 9 2015
Nitrate MR 3 2008
Arsenic MR 2 2005
Cadmium MR 2 2005
Chromium MR 2 2005
Nickel MR 2 2005
Antimony, Total MR 2 2005
Beryllium, Total MR 2 2005
Fluoride MR 2 2005
Mercury MR 2 2005
Nitrite MR 2 2007
Barium MR 2 2005
Selenium MR 2 2005
Thallium, Total MR 2 2005

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 GRANITE MOBILE HOME PARK.

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 MD0030204 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
2015 Lead and Copper Rule MR 9 SDWIS / MD0030204 / 5000
2014 Coliform (TCR) MR 18 SDWIS / MD0030204 / 3100
2013 Consumer Confidence Rule Other 12 SDWIS / MD0030204 / 7000
2008 Nitrate MR 3 SDWIS / MD0030204 / 1040
2007 Nitrite MR 2 SDWIS / MD0030204 / 1041
2005 Arsenic MR 2 SDWIS / MD0030204 / 1005
2005 Cadmium MR 2 SDWIS / MD0030204 / 1015
2005 Chromium MR 2 SDWIS / MD0030204 / 1020
2005 Nickel MR 2 SDWIS / MD0030204 / 1036
2005 Antimony, Total MR 2 SDWIS / MD0030204 / 1074
2005 Beryllium, Total MR 2 SDWIS / MD0030204 / 1075
2005 Fluoride MR 2 SDWIS / MD0030204 / 1025
2005 Mercury MR 2 SDWIS / MD0030204 / 1035
2005 Barium MR 2 SDWIS / MD0030204 / 1010
2005 Selenium MR 2 SDWIS / MD0030204 / 1045

How GRANITE MOBILE HOME PARK Compares

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

Metric GRANITE MOBILE HOME PARK Maryland avg Federal benchmark
Total violations 67 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 96 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 GRANITE MOBILE HOME PARK water safe to drink? ▼
GRANITE MOBILE HOME PARK (PWS ID: MD0030204) has 67 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 96 people using Groundwater sources.
How many people does GRANITE MOBILE HOME PARK serve? ▼
GRANITE MOBILE HOME PARK serves 96 people in BETHESDA, Maryland. It is a Private-owned system using Groundwater water sources with 52 service connections.
What type of violations does GRANITE MOBILE HOME PARK have? ▼
GRANITE MOBILE HOME PARK has 67 total violations: 0 health-based violations (MCL exceedances or treatment failures), 54 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in GRANITE MOBILE HOME PARK water? ▼
No PFAS testing data is available for GRANITE MOBILE HOME PARK under the EPA's UCMR5 monitoring program.
What water source does GRANITE MOBILE HOME PARK use? ▼
GRANITE MOBILE HOME PARK 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.

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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.

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