CITY REPORT MD 1 HEALTH VIOLATIONS

Conowingo, MD: 3 Violations - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs with Violations
Zone 2
Radon Risk (Moderate)
$294K
Median Home Value
$1,600
Est. Remediation (0.5% of home value)

Key Facts for Conowingo Residents

  • Your city's water systems recorded 3 violations in the past 5 years.
  • Homes built before 1986: 45% - older plumbing may contain lead solder.
  • Estimated remediation: $1,600 per household.
  • CDC health risk index: 14.18 - above typical levels.

Conowingo's Water Providers

In Conowingo, MD, the drinking water supply is organized under a single dominant utility - a consolidated structure that shapes how infrastructure investment, regulatory compliance, and rate decisions flow to households. When one provider handles the overwhelming share of residential connections out of 1 tracked system, accountability is clear: service upgrades, EPA violation responses, and tariff changes all funnel through that single organizational structure.

Overview

We track home safety data for 1 ZIP code in Conowingo, Maryland, covering 1 community water system serving approximately 4,125 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

Water Sources

Conowingo water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Stage 2 DBP Rule Treatment Technique 4 1
Surface Water Treatment Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
21918 3 1 Town of Rising Sun

All ZIP Codes in Conowingo

  • 21918 - 3 violations ⚠

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Conowingo Community Health Snapshot

10.5%
Asthma (US: 9.8%)
13.2%
Diabetes (US: 10.4%)
17.4%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 10.5% ↑
Diabetes 13.2% ↑
Mental Health 17.4% ↑

Vertical line = national average. Above national · Below national

What's in Conowingo's Water?

Stage 2 DBP Rule 4 violations
Treatment Technique
Disinfection byproduct exposure risk
Surface Water Treatment Rule 2 violations
Treatment Technique
Pathogens may not be adequately removed

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Conowingo Infrastructure Age

1981
Median Build Year
45%
Built Before 1986
19%
Built Before 1970
Copper
Likely Pipe Material

With 45% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Two regulatory milestones define plumbing-era risk in residential housing: 1970, when lead pipes were still commonly installed for service lines, and 1986, when lead solder was banned from new copper plumbing. A median build year of 1981 places Conowingo in the middle zone between those thresholds - with a meaningful share of housing predating both cutoffs. The distribution shown above breaks out those eras explicitly, clarifying where concentrated risk sits across the residential inventory.

1981
Median Year Built
45%
Pre-1986 (Lead Paint Risk)
19%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (19%) 1970–1986 (26%) Post-1986 (55%)

Most homes in Conowingo were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

How Remediation Costs Compare in Conowingo

When estimated remediation is placed alongside median property values in Conowingo, the resulting ratio is low - a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.

Median Home Value
$293,800
Est. Remediation
$1,600
Remediation as % of home value 0.5%

Remediation costs in Conowingo are relatively low compared to home values. The $800–$2,600 estimated range is a small fraction of median property value. Home values are 31% below the Maryland average.

Conowingo: Lead Risk & Vulnerable Populations

45%
Homes Built Before 1986

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

45% of Conowingo housing dates to the pre-rule era, alongside aggregate readings hovering at the federal action mark - household-level confirmation through a draw-test kit fits the local picture.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Conowingo: NFIP Claim Records and Water-Quality Context

29
Total FEMA Flood Claims
$16,571
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Conowingo contains 29 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $16,571. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$1,600</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Frequently Asked Questions

How many water violations does Conowingo have?
Conowingo water systems have a total of 3 EPA violations, including 1 health-based violation. Violations are tracked across 1 ZIP code.
How many water systems serve Conowingo?
Conowingo is served by 1 public water system across 1 ZIP code, serving approximately 4,125 people.
How much does it cost to fix water issues in Conowingo?
Estimated remediation costs in Conowingo average $1,600 per household, ranging from $800 to $2,600. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesMaryland → Conowingo, MD

How to cite this page

APA ZipCheckup. (2026). Conowingo, MD: 3 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/md/conowingo/
BibTeX
@misc{zipcheckup-cities-md-conowingo,
  author = {{ZipCheckup}},
  title  = {{Conowingo, MD: 3 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/md/conowingo/}
}

Page version: August 2026.

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