Ijamsville, MD: High Radon Risk — 53/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Water systems serving Ijamsville record elevated violation rates against MD benchmarks — residents in affected areas may want to check their local system's current compliance status.
How Ijamsville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Ijamsville Residents
- Homes built before 1986: 43% — older plumbing may contain lead solder.
- Estimated remediation: $2,900 per household.
- CDC health risk index: 11.57.
Ijamsville's Water Providers
Structurally, Ijamsville, MD's water supply is divided. Federal data identifies 2 water systems in the area, with 2 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 1 ZIP code in Ijamsville, Maryland (population ~7,439), covering 2 community water systems serving approximately 76,464 people region-wide.
No EPA violations recorded across any ZIP codes in Ijamsville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Ijamsville: D (53/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Ijamsville water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Ijamsville
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 21754 | D | NEW DESIGN - FREDERICK COUNTY | 74,911 |
All ZIP Codes in Ijamsville
- 21754 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Ijamsville Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Ijamsville Infrastructure Age
With 43% 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
Pre-1986 construction carries elevated plumbing-era lead risk because lead solder was widely used before that federal ban. In Ijamsville, the median build year of 1999 indicates a housing stock where that older fraction represents a significant share of the residential inventory.
Most homes in Ijamsville 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 Ijamsville
Across Ijamsville, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Ijamsville are relatively low compared to home values. The $1,900–$4,100 estimated range is a small fraction of median property value. Home values are 45% above the Maryland average.
Ijamsville: Lead Risk & Vulnerable Populations
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.
When older housing represents 43% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Ijamsville address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Ijamsville: Flood History & Water Damage Risk
Within the NFIP's national dataset, Ijamsville falls in moderate-exposure territory — 3 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Ijamsville has a moderate flood history with 3 FEMA claims averaging $1,855 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$2,900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Ijamsville
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 43% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Ijamsville, MD