Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Maryland Water Quality Reports
Water quality scores for 35 cities in Maryland
Cumberland
19,495 residents
Odenton
42,415 residents
Bel Air
10,594 residents
Catonsville
44,408 residents
Gaithersburg
70,153 residents
Westminster
19,960 residents
Ellicott City
75,947 residents
Greenbelt
24,921 residents
Laurel
29,248 residents
Takoma Park
17,629 residents
Bethesda
68,056 residents
Dundalk
67,796 residents
Silver Spring
82,934 residents
College Park
34,740 residents
Glen Burnie
72,891 residents
Rockville
68,847 residents
Severna Park
39,553 residents
Waldorf
81,410 residents
Baltimore
602,274 residents
Bowie
59,156 residents
Carney
30,508 residents
Easton
16,589 residents
Essex
41,980 residents
Frederick
78,588 residents
Reisterstown
27,805 residents
Towson
59,533 residents
Annapolis
40,812 residents
Parkville
31,617 residents
Salisbury
33,050 residents
Hyattsville
21,187 residents
Columbia
104,681 residents
South Laurel
26,112 residents
Severn
54,327 residents
Germantown
91,249 residents
Hagerstown
43,527 residents
About Maryland Water Quality
This state's water quality reflects local geographic conditions, industrial activities, and water infrastructure. Water quality can vary significantly between communities, with some areas enjoying excellent tap water while others face contamination challenges requiring treatment.
Based on our analysis of 35 cities in Maryland, the average water quality score is 83/100. 4 cities have water quality scores below 70, indicating potential concerns that residents should be aware of. The highest-rated city is Hagerstown with a score of 50/100, while Cumberland has the most room for improvement at 98/100.
Water Sources in Maryland
Water sources typically include a combination of surface water (rivers, lakes, reservoirs) and groundwater. The specific sources serving your community depend on local geography and infrastructure. Check your local water utility's Consumer Confidence Report for details about your water source.
Common Water Contaminants in Maryland
These contaminants have been detected in various Maryland water systems
Maryland Water Regulations
State environmental and health agencies oversee drinking water quality in compliance with federal EPA standards. Public water systems are required to test regularly and report results to residents through annual Consumer Confidence Reports.
Health Considerations
Water quality concerns vary by location. Common issues include lead from older plumbing, agricultural runoff in rural areas, and industrial contamination near manufacturing sites. Check your local water quality report and consider testing if you have specific concerns.
Recommendations for Maryland Residents
Review your annual Consumer Confidence Report to understand local water quality. Consider having your water tested if you use a private well or have concerns about your plumbing. Water filters certified to remove specific contaminants can address most common water quality issues.
Frequently Asked Questions About Maryland Water Quality
Is Maryland's tap water safe to drink?
Most Maryland cities have tap water that meets EPA safety standards. With an average score of 83/100 across 35 cities we analyzed, Maryland generally has good water quality. However, water quality varies by location, so check your specific city's report.
What are the main water quality concerns in Maryland?
The most common water quality concerns in Maryland include disinfection byproducts (chlorination), lead (older infrastructure), nitrates (agricultural areas). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Should I use a water filter in Maryland?
Whether you need a water filter depends on your specific location and health concerns. With 4 cities in Maryland showing elevated contaminant levels, residents in those areas may benefit from filtration. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Where can I find my Maryland water quality report?
Public water systems in Maryland are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.