City Water Quality Rankings in Maryland
91 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#49
Wye Mills
County, MD
95 A
#50 Brunswick
County, MD
94 A
#51 Cambridge
County, MD
94 A
#52 Chesapeake Beach
County, MD
94 A
#53 Loveville
County, MD
94 A
#54 Salisbury
County, MD
94 A
#55 Aberdeen
County, MD
93 A
#56 Frederick
County, MD
93 A
#57 Hurlock
County, MD
93 A
#58 Westminster
County, MD
93 A
#59 Williamsport
County, MD
93 A
#60 Abingdon
County, MD
92 A
#61 Indian Head
County, MD
92 A
#62 Oakland
County, MD
92 A
#63 Willards
County, MD
92 A
#64 Rock Hall
County, MD
91 A
#65 Lusby
County, MD
90 A
#66 Baltimore
County, MD
89 B
#67 Elkton
County, MD
89 B
#68 Greensboro
County, MD
88 B
#69 Hancock
County, MD
88 B
#70 Leonardtown
County, MD
88 B
#71 Manchester
County, MD
88 B
#72 North Beach
County, MD
87 B
Frequently Asked Questions
How are city water quality rankings calculated in Maryland?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two cities in Maryland?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.