Water Quality Report

Linthicum Heights, MD (21090): 2 Violations Recorded for Mapped Water Systems

EPA data for Glen Burnie-broadneck

EPA records for the water systems mapped to 21090 in Linthicum Heights, MD contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score N/A
Water Quality Concerns 2 non-health-based violation records in EPA data
Lead Risk Below action level Below the reporting limit, 90th percentile, sample period ending 2018-12-31
NFIP Claim History Claim records 28 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 2 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
  • Flood 28 cumulative NFIP claim records. Check the current FEMA map for a specific address.
Contaminant Summary
Violations on record (not health-based)
2 violations
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
1
Water System
290,606
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
Zone 2
County Radon Potential · Moderate
$374K
Median Home ValueState median: $401K

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Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
96/100
Observed
PFAS MCL screen
Unknown
Evidence missing
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
Unknown
Indoor environment
50/100
Outdoor environment
100/100

Coverage: 3 of 4 components and 2 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (7) HIGH

Your Water System

ZIP code 21090 in Linthicum Heights, Maryland is mapped to the water system Glen Burnie-broadneck (EPA ID: MD0020017). This system provides water to approximately 290,606 people from groundwater sources.

Other Water Quality Reports in Maryland

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Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Glen Burnie-broadneck (MD0020017) on EPA.gov.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →
Environmental Hazards (11) HIGH
Home & Infrastructure (8) MODERATE

Possible home maintenance concerns - talk to a local expert.

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Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Linthicum Heights

Based on local data for ZIP 21090, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Linthicum Heights has 28 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Gutter Installation & Repair

The median home in 21090 was built around 1951. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Window Replacement

The median build year of homes in Linthicum Heights is 1951; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.

Typical cost: Window replacement: typically $300–$800 per window installed

Estimate Your Home Maintenance Costs

Roofing Inspection & Repair

Homes built around 1951 may be on their second or third roof. A professional inspection can catch damage before leaks start.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 21090 safe to drink?

EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 21090 (primary system: Glen Burnie-broadneck), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 21090's water come from?

The recorded water source for Glen Burnie-broadneck, a system mapped to ZIP code 21090, is Groundwater. This system serves approximately 290,606 people.

How can I get my water tested in Linthicum Heights?

If Glen Burnie-broadneck supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

What is the radon risk for 21090?

21090 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Anne Arundel County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

What does the NFIP claim history show for ZIP 21090?

FEMA records contain 28 flood insurance claims filed in ZIP code 21090; the recorded rated-zone value (the most frequent one if there are several claims) is A15, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Linthicum Heights, MD (21090): 2 Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/21090/
BibTeX 
@misc{zipcheckup-report-21090,
  author = {{ZipCheckup}},
  title  = {{Linthicum Heights, MD (21090): 2 Violations Recorded for Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/21090/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 21090

ZIP Code City, State Distance Grade Violations
21227 Halethorpe, MD 2.2 mi C 18
21240 Baltimore, MD 2.4 mi N/A 0
21268 Baltimore, MD 2.8 mi N/A 0
21225 Brooklyn, MD 3.1 mi N/A 11
21061 Glen Burnie, MD 3.9 mi B 2
21077 Harmans, MD 4.0 mi N/A 2
21250 Baltimore, MD 4.2 mi C 9
21230 Baltimore, MD 4.5 mi C 9
21075 Elkridge, MD 4.6 mi N/A 1
21076 Hanover, MD 4.7 mi B 7

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Coverage: 16/17 risk factors Data sources →
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