Maryland — 6th District
119th Congress · 109 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 109 ZIP codes in Maryland's 6th District: the district earns a grade C (57/100). 92 EPA violations on record, 22 health-based.
Top Contaminants
ZIP Codes in This District
100 ZIP codes tracked in Maryland's 6th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 21501 | Cumberland | 83 | B | 0 |
| 2 | 21503 | Cumberland | 83 | B | 0 |
| 3 | 21504 | Cumberland | 83 | B | 0 |
| 4 | 21505 | Cumberland | 83 | B | 0 |
| 5 | 21540 | Luke | 83 | B | 1 |
| 6 | 21520 | Accident | 82 | B | 2 |
| 7 | 21543 | Midlothian | 82 | B | 2 (1 health) |
| 8 | 21557 | Rawlings | 82 | B | 2 (1 health) |
| 9 | 21561 | Swanton | 82 | B | 2 (1 health) |
| 10 | 21536 | Grantsville | 78 | B | 0 |
| 11 | 21539 | Lonaconing | 75 | B | 5 (3 health) |
| 12 | 20841 | Boyds | 73 | B | 0 |
| 13 | 20872 | Damascus | 73 | B | 0 |
| 14 | 21502 | Cumberland | 73 | B | 0 |
| 15 | 21550 | Oakland | 73 | B | 0 |
| 16 | 21773 | Myersville | 70 | B | 0 |
| 17 | 21783 | Smithsburg | 70 | B | 1 |
| 18 | 21704 | Frederick | 69 | C | 3 (1 health) |
| 19 | 21713 | Boonsboro | 69 | C | 5 (1 health) |
| 20 | 21716 | Brunswick | 69 | C | 2 |
| 21 | 21771 | Mount Airy | 69 | C | 7 (1 health) |
| 22 | 20837 | Poolesville | 68 | C | 2 |
| 23 | 21741 | Hagerstown | 68 | C | 1 |
| 24 | 20813 | Bethesda | 66 | C | 0 |
| 25 | 20827 | Bethesda | 66 | C | 0 |
| 26 | 20838 | Barnesville | 66 | C | 0 |
| 27 | 20889 | Bethesda | 66 | C | 0 |
| 28 | 20894 | Bethesda | 66 | C | 0 |
| 29 | 21705 | Frederick | 65 | C | 3 (1 health) |
| 30 | 21709 | Frederick | 65 | C | 3 (1 health) |
| 31 | 21782 | Sharpsburg | 65 | C | 0 |
| 32 | 21788 | Thurmont | 65 | C | 0 |
| 33 | 20871 | Clarksburg | 64 | C | 7 (3 health) |
| 34 | 21702 | Frederick | 64 | C | 3 (1 health) |
| 35 | 21703 | Frederick | 64 | C | 3 (1 health) |
| 36 | 21746 | Hagerstown | 64 | C | 1 |
| 37 | 21747 | Hagerstown | 64 | C | 1 |
| 38 | 21748 | Hagerstown | 64 | C | 1 |
| 39 | 21749 | Hagerstown | 64 | C | 1 |
| 40 | 21798 | Woodsboro | 64 | C | 6 |
| 41 | 21523 | Bloomington | 63 | C | 0 |
| 42 | 21530 | Flintstone | 63 | C | 0 |
| 43 | 21538 | Kitzmiller | 63 | C | 0 |
| 44 | 21541 | Mc Henry | 63 | C | 0 |
| 45 | 21562 | Westernport | 63 | C | 5 (2 health) |
| 46 | 21727 | Emmitsburg | 63 | C | 5 |
| 47 | 21740 | Hagerstown | 63 | C | 1 |
| 48 | 21750 | Hancock | 63 | C | 2 |
| 49 | 21780 | Sabillasville | 63 | C | 0 |
| 50 | 21793 | Walkersville | 62 | C | 1 |
Overview
Maryland's 6th District encompasses 109 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (57/100).
92 EPA violations have been recorded across this district's water systems. 22 are health-based violations. About 30% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Stage 2 DBP Rule - 21 violations
- Consumer Confidence Report Rule - 13 violations
- Total Trihalomethanes (TTHM) - 9 violations
- Stage 1 DBP Rule - 7 violations
- Contaminant 2020 - 6 violations
Housing Context
Homes in this district were built on average around 1973 (~53 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Lead Alert: 2 ZIP codes in this district exceed the EPA action level for lead. Consider using a certified lead-removal filter.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 109 ZIP codes in Maryland's 6th District.