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Boil water, do-not-drink and do-not-use notices in effect now.
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In effect
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People affected
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Counties affected
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All counties
Allegany County
Anne Arundel County
Baltimore city
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Calvert County
Caroline County
Carroll County
Cecil County
Charles County
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Frederick County
Garrett County
Harford County
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Kent County
Montgomery County
Prince George's County
Queen Anne's County
Somerset County
St. Mary's County
Talbot County
Washington County
Wicomico County
Worcester County
✓ Nothing in effect in Maryland right now.