Water Quality Report

Darlington, MD (21034): High Radon Potential Area

EPA data for Town of Darlington

High County Radon Potential

EPA records for the water systems mapped to 21034 in Darlington, MD contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.

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

Safety Score N/A

Water Quality No violations

Lead Risk Below action level 0.0014 mg/L, 90th percentile, sample period ending 2023-12-31

NFIP Claim History Claim records 19 claims

Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

Water No drinking-water violations in EPA records since 2021.
Lead The reported 90th-percentile lead result of 0.0014 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
Flood 19 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.

Contaminant Summary

Evidence unavailable

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

Water System

250

People Served

Health Violations (since 2021)

Groundwater

Water Source

0.0014 mg/L

Reported Lead Result

Zone 1

County Radon Potential · High

$348K

Median Home Value13% below state 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

100/100

Observed

PFAS MCL screen

Unknown

Evidence missing

EPA radon zone

0/100

Observed

Annual EPA AirData AQI

100/100

Observed

Required domains

Drinking water

Unknown

Indoor environment

0/100

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 (6) HIGH

Your Water System

ZIP code 21034 in Darlington, Maryland is mapped to the water system Town of Darlington (EPA ID: MD0120009). This system provides water to approximately 250 people from groundwater sources.

Other Water Quality Reports in Maryland

20588 (Dhs)
20601 (Waldorf) - 3 violations recorded for mapped water systems
20602 (Waldorf) - 3 violations recorded for mapped water systems
20603 (Waldorf) - 3 violations recorded for mapped water systems
20604 (Waldorf)
20606 (Abell)
20607 (Accokeek) - 3 violations recorded for mapped water systems
20608 (Aquasco)
20609 (Avenue)
20610 (Barstow)
20611 (Bel Alton) - 3 violations recorded for mapped water systems
20612 (Benedict)
20613 (Brandywine) - 2 violations recorded for mapped water systems
20615 (Broomes Island)
20616 (Bryans Road) - 1 violation recorded for mapped water systems
20617 (Bryantown)
20618 (Bushwood)
20619 (California) - 12 violations recorded for mapped water systems
20620 (Callaway) - 1 violation recorded for mapped water systems
20621 (Chaptico) - 4 violations recorded for mapped water systems

Nearby Water Quality Reports

21918 (Conowingo) - 4 mi - 3 violations recorded for mapped water systems
21160 (Whiteford) - 6 mi
21028 (Churchville) - 6 mi
21917 (Colora) - 7 mi - 3 violations recorded for mapped water systems
21154 (Street) - 8 mi
17563 (Peach Bottom, PA) - 8 mi
21904 (Port Deposit) - 9 mi - 11 violations recorded for mapped water systems
17314 (Delta, PA) - 9 mi
21078 (Havre De Grace) - 9 mi - 22 violations recorded for mapped water systems
21015 (Bel Air) - 10 mi - 3 violations recorded for mapped water systems

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Town of Darlington (MD0120009) on EPA.gov.

4 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) MODERATE

Home & Infrastructure (8) MODERATE

Possible home maintenance concerns - talk to a local expert.

Call (855) 384-4856

Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.

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 Darlington

Based on local data for ZIP 21034, 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 Darlington has 19 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 21034 was built around 1978. 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 Darlington is 1978; 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 1978 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 21034 safe to drink?

EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 21034 (primary system: Town of Darlington), 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 21034's water come from?

The recorded water source for Town of Darlington, a system mapped to ZIP code 21034, is Groundwater. This system serves approximately 250 people.

How can I get my water tested in Darlington?

If Town of Darlington 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.

Is lead a concern in 21034 tap water?

The Lead and Copper Rule record selected for 21034 reports a 90th-percentile lead result of 0.0014 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 21034?

21034 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Harford 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 21034?

FEMA records contain 19 flood insurance claims filed in ZIP code 21034; the recorded rated-zone value (the most frequent one if there are several claims) is A, 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). Darlington, MD (21034): High Radon Potential Area. https://zipcheckup.com/report/21034/

BibTeX

@misc{zipcheckup-report-21034,
  author = {{ZipCheckup}},
  title  = {{Darlington, MD (21034): High Radon Potential Area}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/21034/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 21034

ZIP Code	City, State	Distance	Grade	Violations
21918	Conowingo, MD	4.1 mi	N/A	3
21160	Whiteford, MD	6.0 mi	N/A	0
21028	Churchville, MD	6.3 mi	N/A	0
21917	Colora, MD	7.2 mi	N/A	3
21154	Street, MD	7.6 mi	N/A	0
17563	Peach Bottom, PA	8.5 mi	N/A	0
21904	Port Deposit, MD	9.2 mi	N/A	11
17314	Delta, PA	9.2 mi	N/A	0
21078	Havre De Grace, MD	9.2 mi	C	22
21015	Bel Air, MD	9.7 mi	D	3