What does 'people served' mean?

People served refers to the total population that receives water service from the utility. This number represents the estimated number of residents within the utility's service area.

Why are utilities listed by city?

Utilities are listed by their primary city of operation to help users find water services in their local area. Some utilities may serve multiple cities or unincorporated areas within a region.

How can I get more details about a utility?

Click on any utility name or the 'View Profile' button to access the full utility profile page, which includes detailed information, contact details, and compliance data.

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Drinking Water Utilities in Maryland

Q: How many drinking water utilities are in Maryland?

Maryland has 30 drinking water utilities serving more than 10,000 people listed in this directory.

Browse utilities serving more than 10,000 people by location and population served.

Utilities listed

Total people served

5,007,963

Largest utility

Washington Suburban Sanitary Commission

1,900,000 people

Coverage

100%

with population data

Maryland has 30 drinking water utilities serving more than 10,000 people in this directory. The largest utility by population served is Washington Suburban Sanitary Commission, serving 1,900,000 people. Utilities are listed with their city location and population served.

People Served:

01,900,000

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Utility Name	City	People Served	Action
Washington Suburban Sanitary Commission	Silver Spring	1,900,000	View Profile
City of Baltimore	Baltimore	1,600,000	View Profile
Glen Burnie-Broadneck	Millersville	290,606	View Profile
Howard County Department of Public Works	Columbia	286,158	View Profile
Harford County Department of Public Works	Bel Air	104,567	View Profile
City of Hagerstown	Hagerstown	92,200	View Profile
Waldorf	La Plata	91,260	View Profile
Crofton-Odenton	Millersville	62,986	View Profile
City of Frederick	Frederick	54,000	View Profile
City of Rockville	Rockville	52,000	View Profile
New Design - Frederick County	Frederick	49,200	View Profile
Lexington Park	California	43,030	View Profile
City of Westminster	Westminster	35,256	View Profile
City of Annapolis	Annapolis	35,000	View Profile
City of Salisbury	Salisbury	30,343	View Profile
Town of Ocean City	410-723-1832	30,000	View Profile
City of Cumberland		27,039	View Profile
City of Bowie	Bowie	25,000	View Profile
Freedom District	Westminster	24,867	View Profile
Broad Creek	Millersville	23,179	View Profile
Patuxent Naval Air Station (NAVFAC-WASH)	Patuxent River	22,000	View Profile
Easton Utilities	Easton	17,357	View Profile
City of Aberdeen	Aberdeen	16,200	View Profile
Town of Elkton	Elkton	15,625	View Profile
Chapel Hill - Aberdeen Proving Grounds	Aberdeen	15,000	View Profile
City of Cambridge	Cambridge	15,000	View Profile
City of Havre De Grace	Havre De Grace	14,000	View Profile
Maryland American Water Company	Hopewell	13,200	View Profile
Ocean Pines	Berlin	11,890	View Profile
City of Frostburg		11,000	View Profile

Showing 1 to 30 of 30 utilities

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Top Drinking Water Utilities in Maryland by Population Served

Frequently Asked Questions

Definitions

People served: Total population supplied with water by the utility system.
Drinking water utility: A public water system that provides potable (safe to drink) water to residential and commercial customers through a distribution network.