Neighborhood Report
Grade D
Rockville, MD Neighborhood Water Quality — Clean Compliance
8 ZIP codes · 0 EPA violations
Data source: EPA SDWIS Last verified: 2026-06-04
Water quality varies significantly across Rockville, MD. We analyzed 8 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.
City Overview: Grade D (45/100)
| Grade | Neighborhoods | % |
|---|---|---|
| A | 0 | 0% |
| B | 0 | 0% |
| C | 0 | 0% |
| D | 8 | 100% |
| F | 0 | 0% |
Neighborhood Rankings
Every ZIP code in Rockville ranked by Home Safety Score:
| Rank | ZIP Code | Score | Grade | Violations | Lead Risk |
|---|---|---|---|---|---|
| 1 | 20850 | 53 | D | 0 | No data |
| 2 | 20851 | 53 | D | 0 | No data |
| 3 | 20852 | 45 | D | 0 | No data |
| 4 | 20853 | 45 | D | 0 | No data |
| 5 | 20847 | 40 | D | 0 | No data |
| 6 | 20848 | 40 | D | 0 | No data |
| 7 | 20849 | 40 | D | 0 | No data |
| 8 | 20857 | 40 | D | 0 | No data |
How Neighborhoods Compare
Each ZIP code compared to county and state averages:
- 2 neighborhoods score better than county average
- 6 neighborhoods score worse than county average
Frequently Asked Questions
What is the safest neighborhood in Rockville?
ZIP code 20850 has the highest safety score in Rockville at 53/100 (grade D). Check the full report for details.
Is Rockville water safe to drink?
Rockville has an average water safety score of 45/100 (D). 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.