Frederick, MD Home Safety by Neighborhood - Water Issues Recorded
6 ZIP codes · 7 EPA violations on record for mapped water systems
Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow
ZipCheckup compares 6 ZIP codes across Frederick, MD. The area averages a grade C (62/100); water systems associated with 4 ZIP codes have recorded EPA violations.
Home-safety conditions vary across Frederick, MD. We compared 6 ZIP codes using the current versioned Home Safety Score. Water compliance remains one component alongside PFAS screening, radon, and annual air quality.
City Overview: Grade C (62/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 3 | 75% |
| D | 1 | 25% |
| F | 0 | 0% |
Neighborhood Rankings
Mapped ZIP codes in Frederick ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 21701 | 66 | C | 3 | 0.0030 mg/L |
| 2 | 21704 | 66 | C | 2 | 0.0030 mg/L |
| 3 | 21702 | 65 | C | 4 | 0.0020 mg/L |
| 4 | 21703 | 49 | D | 2 | 0.0030 mg/L |
| 5 | 21705 | — | — | 0 | 0.0011 mg/L |
| 6 | 21709 | — | — | — | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 3 neighborhoods score better than county average
- 1 neighborhoods score worse than county average
EPA Violations
- 7 total violations since 2021 across the water systems mapped to Frederick ZIP codes (each system counted once; includes small systems beyond the city utility)
- 1 health-based violation records in the available EPA data
- 4 of 5 directly mapped ZIP records are mapped to water systems with recorded violations
- 0 of 5 ZIP records with known lead status are served by a system whose 90th-percentile lead result exceeded the EPA action level
Top Contaminants
| Contaminant | Violations | ZIPs |
|---|---|---|
| Toxaphene | 7 | 4 |
| Total Trihalomethanes (TTHM) | 1 | 1 |
| Chlordane | 1 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
Frequently Asked Questions
Which ZIP code in Frederick has the highest home safety score?
ZIP code 21701 has the highest safety score among scored ZIP codes in Frederick at 66/100 (grade C). Check the full report for details.
Is Frederick water safe to drink?
The Home Safety Score is not a drinking-water grade. Across 5 directly mapped ZIP records, 7 EPA violations are recorded; 0 of 5 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.
Related Pages
Data Sources
- EPA SDWIS
- U.S. Census Bureau
Reporting periods vary by source; the page metadata identifies this materialization.