Maryland · drinking water · SDWIS through latest publish

Glen Burnie-Broadneck Water Quality — Millersville, Maryland

PWSID MD0020017 · GroundwaterMunicipal

290,606 people served. 1 health-based SDWIS violation recorded in the past 5 years. 3 remain unresolved. Last cited 3 years ago.

ALL SDWIS VIOLATIONS · 20202026 (annual count)
Bar chart of annual values from 2020 to 2026, in violations. Most recent year (2026): 0 violations.21 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Cadmium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2023 (cadmium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Beryllium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2022 (beryllium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Mercury (inorganic)

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2020 (mercury (inorganic)).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Cadmium3 citations
  • Beryllium3 citations
  • Mercury (inorganic)3 citations
  • Contaminant 50002 citations
  • Barium2 citations
  • Chromium2 citations
Violation history

What's On The SDWIS Record

Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.

HEALTH-BASED · CADMIUMUNRESOLVED

2023 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1015

MONITORING · BERYLLIUM

2022 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · BERYLLIUMUNRESOLVED

2022 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

2022 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · CONTAMINANT 5000

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2021 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · BARIUM

2020 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · BARIUM

2020 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1010

MONITORING · CADMIUM

2020 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CADMIUM

2020 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1015

MONITORING · CHROMIUM

2020 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · CHROMIUM

2020 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1020

MONITORING · SELENIUM

2020 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · SELENIUM

2020 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1035

MONITORING · CONTAMINANT 1036

2020 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1036

2020 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1074

2020 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1074

2020 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1074

MONITORING · CONTAMINANT 1075

2020 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1075

2020 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1075

MONITORING · CONTAMINANT 1085

2020 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1085

2020 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1085

MONITORING · ASBESTOS

2020 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · ASBESTOS

2020 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1045

MONITORING · MERCURY (INORGANIC)

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)UNRESOLVED

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1025

MONITORING · MERCURY (INORGANIC)

2020 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1025

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

Anne Arundel County, Maryland (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 588,109. Local disparity score for pm2.5 (fine particulate) sits well below the reference (10). Why we surface this →

POPULATION SHARE
5.8%

Low-income

POPULATION SHARE
35.4%

People of color

POPULATION SHARE
6.2%

Under age 5

POPULATION SHARE
15.4%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.9below the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.56near the national median
  • Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.30below the national median
  • Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.61above the national median
  • Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.55near the national median
  • Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.57near the national median
  • Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.54near the national median
  • Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.84in the highest 20% nationally
  • RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.65above the national median
  • Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.70above the national median
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.61above the national median
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.84in the highest 20% nationally
  • Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.76above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)10well below the reference
Ozone59below the reference
Nitrogen dioxide (NO₂)31well below the reference
Diesel particulate56below the reference
Toxic releases (RSEI)47well below the reference
Traffic proximity51below the reference
Lead-paint risk (pre-1960 housing)32well below the reference
Superfund site proximity52below the reference
RMP-facility proximity46well below the reference
Hazardous-waste site proximity58below the reference
Underground storage tanks42well below the reference
NPDES wastewater proximity54below the reference
Drinking-water non-compliance1well below the reference

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).

Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2020-01-012026-05-07.

What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.