Maryland Line, MD Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Compliance figures for Maryland Line indicate average water quality in MD overall — some service areas have recorded health-based violations in recent monitoring cycles, while others operate cleanly, making system-level data the most actionable reference point for residents.
How Maryland Line Compares
Data: EPA SDWIS Last verified: 2026-06-03
Maryland Line Water: The Quick Version
- Homes built before 1986: 100% — older plumbing may contain lead solder.
- CDC health risk index: 12.61 — above typical levels.
Water Systems Serving Maryland Line
Because residential water in Maryland Line, MD flows primarily through a single utility, infrastructure decisions, rate-setting, and EPA compliance are all managed within one organizational structure. Federal records show 1 system active in the area, but one provider dominates the service landscape for most homes and apartments.
Overview
We track water quality and home safety data for 1 ZIP code in Maryland Line, Maryland (population ~31), covering 1 community water system serving approximately 250 people region-wide.
No EPA violations recorded across any ZIP codes in Maryland Line — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Maryland Line: C (66/100)
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
Maryland Line water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Maryland Line
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 21105 | C | HEBRON WOODS MOBILE HOME PARK | 250 |
All ZIP Codes in Maryland Line
- 21105 [C]
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.
CDC Health Data for Maryland Line
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
How Old Is Maryland Line's Housing Stock?
With 100% 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
Because the majority of Maryland Line's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1905 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Maryland Line were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Maryland Line
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 100% 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 Maryland Line address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Maryland Line
- 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 100% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Maryland Line, MD