Maryland — 5th District
119th Congress · 99 ZIP codes · Avg score 59/100 · Grade C · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 99 ZIP codes in Maryland's 5th District: the district earns a grade C (59/100). 98 EPA violations on record, 17 health-based.
Top Contaminants
ZIP Codes in This District
99 ZIP codes tracked in Maryland's 5th District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 20640 | Indian Head | 83 | B | 1 |
| 2 | 20711 | Lothian | 83 | B | 0 |
| 3 | 20622 | Charlotte Hall | 82 | B | 5 (1 health) |
| 4 | 20636 | Hollywood | 82 | B | 2 |
| 5 | 20716 | Bowie | 82 | B | 2 (1 health) |
| 6 | 21054 | Gambrills | 82 | B | 3 (1 health) |
| 7 | 20670 | Patuxent River | 80 | B | 3 |
| 8 | 20607 | Accokeek | 78 | B | 0 |
| 9 | 20613 | Brandywine | 78 | B | 0 |
| 10 | 20724 | Laurel | 78 | B | 0 |
| 11 | 21114 | Crofton | 78 | B | 0 |
| 12 | 20602 | Waldorf | 77 | B | 3 |
| 13 | 20604 | Waldorf | 77 | B | 3 |
| 14 | 20646 | La Plata | 77 | B | 2 |
| 15 | 20653 | Lexington Park | 77 | B | 3 (1 health) |
| 16 | 20715 | Bowie | 77 | B | 2 (1 health) |
| 17 | 20720 | Bowie | 77 | B | 2 (1 health) |
| 18 | 20721 | Bowie | 77 | B | 2 (1 health) |
| 19 | 20601 | Waldorf | 72 | B | 3 |
| 20 | 20603 | Waldorf | 72 | B | 3 |
| 21 | 20664 | Newburg | 72 | B | 22 (1 health) |
| 22 | 20658 | Marbury | 71 | B | 5 (1 health) |
| 23 | 20650 | Leonardtown | 70 | B | 6 (3 health) |
| 24 | 20676 | Port Republic | 70 | B | 1 |
| 25 | 20689 | Sunderland | 65 | C | 2 (1 health) |
| 26 | 20736 | Owings | 65 | C | 0 |
| 27 | 20606 | Abell | 63 | C | 0 |
| 28 | 20616 | Bryans Road | 63 | C | 0 |
| 29 | 20618 | Bushwood | 63 | C | 0 |
| 30 | 20620 | Callaway | 63 | C | 0 |
| 31 | 20621 | Chaptico | 63 | C | 0 |
| 32 | 20623 | Cheltenham | 63 | C | 0 |
| 33 | 20627 | Compton | 63 | C | 0 |
| 34 | 20630 | Drayden | 63 | C | 0 |
| 35 | 20637 | Hughesville | 63 | C | 0 |
| 36 | 20662 | Nanjemoy | 63 | C | 0 |
| 37 | 20667 | Park Hall | 63 | C | 0 |
| 38 | 20678 | Prince Frederick | 63 | C | 1 |
| 39 | 20684 | Saint Inigoes | 63 | C | 0 |
| 40 | 20686 | Saint Marys City | 63 | C | 0 |
| 41 | 20692 | Valley Lee | 63 | C | 0 |
| 42 | 20776 | Harwood | 63 | C | 0 |
| 43 | 20779 | Tracys Landing | 63 | C | 0 |
| 44 | 21140 | Riva | 63 | C | 0 |
| 45 | 20732 | Chesapeake Beach | 60 | C | 1 |
| 46 | 20609 | Avenue | 55 | C | 0 |
| 47 | 20615 | Broomes Island | 55 | C | 0 |
| 48 | 20625 | Cobb Island | 55 | C | 0 |
| 49 | 20626 | Coltons Point | 55 | C | 0 |
| 50 | 20628 | Dameron | 55 | C | 0 |
Overview
Maryland's 5th District encompasses 99 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (59/100).
98 EPA violations have been recorded across this district's water systems. 17 are health-based violations. About 27% 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 - 42 violations
- Consumer Confidence Report Rule - 21 violations
- Surface Water Treatment Rule - 9 violations
- Stage 1 DBP Rule - 9 violations
- Lead - 8 violations
Housing Context
Homes in this district were built on average around 1984 (~42 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
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 99 ZIP codes in Maryland's 5th District.