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Maryland ZIP Code Water Quality

191 ZIP codes with water quality data · State average grade: B-

ZIP Codes
191
Avg Grade
B-
A or B
47%
D or F
34%
Grade Distribution

How Maryland ZIP codes scored

17%
30%
19%
27%
A
32
17%
Excellent
B
58
30%
Good
C
36
19%
Fair
D
14
7%
Poor
F
51
27%
Failing
All ZIP Codes

All 191 ZIP codes in Maryland

ZIP Code Primary City Grade Score Score Cities
20588 Columbia
C+
 66
1
20601 Waldorf
D
 45
1
20602 Waldorf
D
 45
1
20603 Waldorf
D
 45
1
20604 Waldorf
D
 45
1
20613 Brandywine
A-
 89
1
20619 California
C-
 59.6
1
20627 Leonardtown
B-
 70.5
1
20634 California
C-
 59.6
1
20639 Huntingtown
B-
 70.6
1
20640 Indian Head
B-
 70.3
1
20646 La Plata
F
 39.5
1
20650 Leonardtown
B-
 70.5
1
20653 California
C-
 59.6
2
20657 Lusby
B
 75.7
1
20675 Waldorf
D
 45
1
20676 Port Republic
A-
 87.5
1
20678 Prince Frederick
B
 75
1
20685 St. Leonard
A
 93.8
1
20695 Waldorf
D
 45
1
20701 Jessup
B
 75.4
1
20707 Laurel
A+
 95
1
20714 North Beach
B+
 80.9
1
20715 Bowie
B+
 80.5
1
20716 Bowie
B+
 80.5
1
20717 Bowie
B+
 80.5
1
20718 Bowie
B+
 80.5
1
20719 Bowie
B+
 80.5
1
20720 Bowie
B+
 80.5
1
20721 Bowie
B+
 80.5
1
20725 Laurel
A+
 95
1
20732 Chesapeake Beach
A-
 89.2
1
20754 Dunkirk
A-
 85.5
1
20755 Fort Meade
A
 91.8
1
20776 Lothian
B-
 70.5
1
20794 Jessup
B
 75.4
1
20797 Laurel
A+
 95
1
20837 Poolesville
B
 76.8
1
20877 Gaithersburg
C
 60.8
1
20878 Gaithersburg
C
 60.8
1
20879 Gaithersburg
C
 60.8
1
20884 Gaithersburg
C
 60.8
1
20885 Gaithersburg
C
 60.8
1
20898 Gaithersburg
C
 60.8
1
20899 Gaithersburg
C
 60.8
1
20904 Sherwood Forest
A
 91.6
1
21001 Aberdeen
B
 79.8
1
21009 Abingdon
A
 90
1
21014 Bel Air
A+
 96.1
1
21029 Columbia
C+
 66
1
21041 Ellicott City
D
 45
1
21042 Ellicott City
D
 45
1
21043 Ellicott City
D
 45
1
21044 Columbia
C+
 66
1
21045 Columbia
C+
 66
1
21046 Columbia
C+
 66
1
21054 Crofton
B
 79.4
1
21057 Glen Arm
C+
 66.3
1
21074 Hampstead
B+
 81.8
1
21076 Severn
B-
 73.2
1
21077 Severn
B-
 73.2
1
21078 Havre De Grace
C
 62.2
1
21093 Timonium
B+
 83.3
1
21102 Manchester
B+
 80.9
1
21108 Millersville
F
 41.6
1
21114 Crofton
B
 79.4
1
21144 Severn
B-
 73.2
1
21150 Columbia
C+
 66
1
21154 Street
B-
 73.3
1
21157 Westminster
F
 39.5
1
21158 Westminster
F
 39.5
1
21201 Baltimore
F
 39.8
1
21202 Baltimore
F
 39.8
1
21203 Baltimore
F
 39.8
1
21205 Baltimore
F
 39.8
1
21206 Baltimore
F
 39.8
1
21207 Baltimore
F
 39.8
1
21209 Baltimore
F
 39.8
1
21210 Baltimore
F
 39.8
1
21211 Baltimore
F
 39.8
1
21212 Baltimore
F
 39.8
1
21213 Baltimore
F
 39.8
1
21214 Baltimore
F
 39.8
1
21215 Baltimore
F
 39.8
1
21216 Baltimore
F
 39.8
1
21217 Baltimore
F
 39.8
1
21218 Baltimore
F
 39.8
1
21223 Baltimore
F
 39.8
1
21224 Baltimore
F
 39.8
1
21225 Baltimore
F
 39.8
1
21226 Baltimore
F
 39.8
1
21229 Baltimore
F
 39.8
1
21230 Baltimore
F
 39.8
1
21231 Baltimore
F
 39.8
1
21233 Baltimore
F
 39.8
1
21239 Baltimore
F
 39.8
1
21251 Baltimore
F
 39.8
1
21263 Baltimore
F
 39.8
1
21264 Baltimore
F
 39.8
1
21270 Baltimore
F
 39.8
1
21273 Baltimore
F
 39.8
1
21275 Baltimore
F
 39.8
1
21278 Baltimore
F
 39.8
1
21279 Baltimore
F
 39.8
1
21281 Baltimore
F
 39.8
1
21287 Baltimore
F
 39.8
1
21290 Baltimore
F
 39.8
1
21297 Baltimore
F
 39.8
1
21298 Baltimore
F
 39.8
1
21401 Annapolis
A-
 88
1
21403 Annapolis
A-
 88
1
21404 Annapolis
A-
 88
1
21411 Annapolis
A-
 88
1
21501 Cumberland
B+
 83.5
1
21502 Cumberland
B+
 83.5
1
21503 Cumberland
B+
 83.5
1
21504 Cumberland
B+
 83.5
1
21505 Cumberland
B+
 83.5
1
21536 Grantsville
A-
 86.2
1
21539 Lonaconing
C+
 67.9
1
21550 Oakland
C+
 66.6
2
21562 Westernport
B
 79.1
1
21601 Easton
A-
 87.5
1
21613 Cambridge
B+
 80.2
1
21617 Centreville
B
 78.5
1
21620 Chestertown
C
 64.8
1
21629 Denton
B-
 71.5
1
21632 Federalsburg
C
 63.4
1
21638 Grasonville
B-
 73.3
1
21639 Greensboro
D+
 52.3
1
21643 Hurlock
B
 79.4
1
21651 Millington
A-
 89.4
1
21654 Oxford
B
 78.3
1
21655 Preston
B+
 81.8
1
21658 Queenstown
B+
 82.4
1
21660 Ridgely
B-
 74.2
1
21661 Rock Hall
A-
 85.1
1
21663 St. Michaels
B+
 83.2
1
21664 Secretary
A-
 89.8
1
21666 Stevensville
C
 64.5
1
21690 Chestertown
C
 64.8
1
21701 Frederick
F
 37.5
1
21702 Frederick
F
 37.5
1
21704 Urbana
B+
 82.7
1
21705 Frederick
F
 37.5
1
21709 Frederick
F
 37.5
1
21713 Boonsboro
C+
 69.6
1
21716 Brunswick
A-
 86.7
1
21727 Emmitsburg
B
 75.9
1
21734 Funkstown
A-
 85.8
1
21740 Hagerstown
C
 60.5
2
21741 Hagerstown
C
 60.5
1
21742 Hagerstown
C
 60.5
1
21747 Hagerstown
C
 60.5
1
21749 Hagerstown
C
 60.5
1
21750 Hancock
B
 79.8
1
21754 Urbana
B+
 82.7
1
21758 Brunswick
A-
 86.7
1
21769 Middletown
B
 78.6
1
21771 Mount Airy
C+
 66.6
1
21773 Myersville
A
 91
1
21776 New Windsor
A-
 89
1
21783 Smithsburg
B
 79.8
1
21784 Sykesville
C-
 57.8
1
21787 Taneytown
A
 90.8
1
21788 Thurmont
B+
 82.6
1
21791 Union Bridge
A-
 85.7
1
21793 Walkersville
A-
 89
1
21795 Williamsport
C+
 69
1
21798 Woodsboro
A-
 85.1
1
21801 Salisbury
F
 32.2
1
21804 Salisbury
F
 32.2
1
21811 Berlin
D
 47.9
1
21826 Fruitland
C+
 65.2
1
21830 Hebron
A-
 85.5
1
21842 Ocean City
C-
 57.9
1
21843 Ocean City
C-
 57.9
1
21850 Pittsville
B+
 83.5
1
21851 Pocomoke City
B-
 72
1
21853 Princess Anne
B
 75
1
21861 Sharptown
B+
 84.4
1
21863 Snow Hill
B+
 84.7
1
21874 Willards
B+
 82.9
1
21875 Delmar
B+
 84.5
1
21901 North East
F
 41
1
21902 Perryville
D
 45
2
21903 Perryville
D
 45
1
21904 Perryville
D
 45
2
21915 Chesapeake City
A-
 87.8
1
21921 Elkton
F
 32.1
2
21922 Elkton
F
 32.1
1
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