Compare Systems
7 available Maryland system records
Compare the PWSID, linked community, source-water context, and report year currently available for each Maryland record.
All systems are shown.
| PWSID | System | Cities | Counties | Source water | Violation records shown | Latest CCR |
|---|---|---|---|---|---|---|
| MD0300002 | City of Baltimore | Baltimore | Not verified | Surface water from regional reservoir sources | No violation records shown in available records | 2025 |
| MD0100015 | City of Frederick | Frederick | Not verified | Surface water listed as the primary source | No violation records shown in available records | 2025 |
| MD0210010 | City of Hagerstown | Hagerstown | Not verified | Surface water from the Potomac River and Edgemont Reservoir | No violation records shown in available records | 2025 |
| MD0020001 | City of Annapolis | Annapolis | Not verified | Groundwater from confined aquifers | No violation records shown in available records | 2025 |
| MD0220004 | City of Salisbury | Salisbury | Not verified | Groundwater from a shallow unconfined Coastal Plain aquifer | No violation records shown in available records | 2025 |
| MD0150005 | Washington Suburban Sanitary Commission | Laurel | Not verified | Surface water from the Patuxent and Potomac rivers | No violation records shown in available records | 2025 |
| MD0010008 | City of Cumberland | Cumberland | Not verified | Surface water from Lake Koon and Gordon reservoirs | No violation records shown in available records | 2025 |
Profiles
Open a Maryland public water system profile
Each of these 7 profiles keeps its source links, annual-report details, limitations, and summarized CCR entries together.
City of Baltimore
PWSID MD0300002
System-level profile for Baltimore. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Baltimore
- Counties
- County not listed
- Latest CCR
- 2025
City of Frederick
PWSID MD0100015
System-level profile for Frederick. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Frederick
- Counties
- County not listed
- Latest CCR
- 2025
City of Hagerstown
PWSID MD0210010
System-level profile for Hagerstown. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Hagerstown
- Counties
- County not listed
- Latest CCR
- 2025
City of Annapolis
PWSID MD0020001
System-level profile for Annapolis. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Annapolis
- Counties
- County not listed
- Latest CCR
- 2025
City of Salisbury
PWSID MD0220004
System-level profile for Salisbury. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Salisbury
- Counties
- County not listed
- Latest CCR
- 2025
Washington Suburban Sanitary Commission
PWSID MD0150005
System-level profile for Laurel. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Laurel
- Counties
- County not listed
- Latest CCR
- 2025
City of Cumberland
PWSID MD0010008
System-level profile for Cumberland. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.
- System type
- Community water system
- Communities
- Cumberland
- Counties
- County not listed
- Latest CCR
- 2025