CONGRESSIONAL DISTRICT MD

Maryland - 3rd District

119th Congress · 48 ZIP codes · Avg score 74/100 · Grade B · Updated N/A

Data: EPA SDWIS / Census 119th Congress Last verified: N/A

ZipCheckup's versioned Home Safety Profile covers 48 ZIP codes in Maryland's 3rd District: the measured model 4.0.0 average is Grade B (74/100). 105 EPA violations on record, 7 health-based.

B
District Grade
74
Avg Safety Score
48
ZIP Codes
105
Total Violations
7
Health Violations
19
Water Systems
Arnold
Best ZIP: 21012 (83/100)
Ellicott City
Lowest ZIP: 21042 (48/100)

Top Contaminants

Stage 1 DBP Rule (36) Lead (19) Surface Water Treatment Rule (19) Stage 2 DBP Rule (9) Contaminant 2020 (4)

ZIP Codes in This District

48 ZIP codes tracked in Maryland's 3rd District.

# ZIP Code City Safety Score Grade Violations
1 21012 Arnold 83 B 2
2 21061 Glen Burnie 83 B 2
3 21146 Severna Park 83 B 2
4 21402 Annapolis 83 B 2
5 21108 Millersville 82 B 5
6 21122 Pasadena 82 B 4
7 21144 Severn 82 B 5
8 21401 Annapolis 82 B 3
9 21403 Annapolis 82 B 3
10 21076 Hanover 80 B 7 (1 health)
11 20723 Laurel 66 C 1
12 21045 Columbia 66 C 1
13 21046 Columbia 66 C 1
14 21104 Marriottsville 66 C 3
15 20794 Jessup 63 C 7 (1 health)
16 21043 Ellicott City 63 C 10 (2 health)
17 21042 Ellicott City 48 D 6 (1 health)
18 20701 Annapolis Junction N/A N/A 3
19 20759 Fulton N/A N/A 1
20 20763 Savage N/A N/A 1
21 20777 Highland N/A N/A N/A
22 21029 Clarksville N/A N/A 1
23 21032 Crownsville N/A N/A 5
24 21036 Dayton N/A N/A N/A
25 21041 Ellicott City N/A N/A N/A
26 21044 Columbia N/A N/A 1
27 21056 Gibson Island N/A N/A 2
28 21060 Glen Burnie N/A N/A 2
29 21062 Glen Burnie N/A N/A N/A
30 21075 Elkridge N/A N/A 1
31 21077 Harmans N/A N/A 2
32 21090 Linthicum Heights N/A N/A 2
33 21123 Pasadena N/A N/A N/A
34 21150 Simpsonville N/A N/A N/A
35 21225 Brooklyn N/A N/A 11 (2 health)
36 21240 Baltimore N/A N/A N/A
37 21268 Baltimore N/A N/A N/A
38 21404 Annapolis N/A N/A N/A
39 21405 Annapolis N/A N/A 2
40 21409 Annapolis N/A N/A 2
41 21411 Annapolis N/A N/A N/A
42 21412 Annapolis N/A N/A N/A
43 21723 Cooksville N/A N/A N/A
44 21737 Glenelg N/A N/A N/A
45 21738 Glenwood N/A N/A N/A
46 21765 Lisbon N/A N/A N/A
47 21794 West Friendship N/A N/A 1
48 21797 Woodbine N/A N/A 4

Overview

Maryland's 3rd District encompasses 48 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (74/100).

105 EPA violations have been recorded across this district's water systems. 7 are health-based violations. About 100% of the 33 ZIP records with a reported violation count have at least one violation.

Top Contaminants

The most frequently cited water quality issues in this district:

  • Stage 1 DBP Rule - 36 violations
  • Lead - 19 violations
  • Surface Water Treatment Rule - 19 violations
  • Stage 2 DBP Rule - 9 violations
  • Contaminant 2020 - 4 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

Updated daily. Data covers 48 ZIP codes in Maryland's 3rd District.

← Back to Maryland overview

How to cite this page

APA ZipCheckup. (2026). Maryland 3rd District: 105 EPA Violations - B. https://zipcheckup.com/congressional/md-3/
BibTeX 
@misc{zipcheckup-congressional-md-3,
  author = {{ZipCheckup}},
  title  = {{Maryland 3rd District: 105 EPA Violations - B}},
  year   = {2026},
  url    = {https://zipcheckup.com/congressional/md-3/}
}

Page version: August 2026.

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