Neighborhood Report
Grade C
Ellicott City, MD Neighborhood Water Quality — Grade C
3 ZIP codes · 15 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Ellicott City, MD. We analyzed 3 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade C (61/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 2 | 67% |
| D | 1 | 33% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Ellicott City ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 21041 | 69 | C | 5 | No data |
| 2 | 21042 | 59 | C | 5 | No data |
| 3 | 21043 | 54 | D | 5 | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 1 neighborhoods score better than county average
- 2 neighborhoods score worse than county average
EPA Violations
- 15 total violations across Ellicott City
- 3 health-based violations
- 3 of 3 ZIP codes have violations
- 0 ZIP codes exceed EPA lead action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Stage 2 DBP Rule | 6 | 3 |
| Surface Water Treatment Rule | 6 | 3 |
| Total Trihalomethanes (TTHM) | 3 | 3 |
Frequently Asked Questions
What is the safest neighborhood in Ellicott City?
ZIP code 21041 has the highest safety score in Ellicott City at 69/100 (grade C). Check the full report for details.
Is Ellicott City water safe to drink?
Ellicott City has an average water safety score of 61/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Updated daily.