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Water Hardness in Maryland Cities

Water hardness in Maryland, defined by the concentration of dissolved minerals such as calcium and magnesium, varies across the state due to its diverse geological features. Located in the Mid-Atlantic region, Maryland’s water hardness levels are influenced by the state’s unique geological formations.

In Maryland, water hardness can range from moderately soft to very hard. For example, areas with limestone or sedimentary rock formations, particularly in parts of the western region and the Piedmont Plateau, may experience harder water due to higher mineral content. In contrast, the eastern coastal areas, including the Eastern Shore, where the geology includes more sediment deposits and fewer mineral-rich formations, often have softer water.

This variation in water hardness across Maryland impacts not only the taste and appearance of the water but also the effectiveness of soaps and detergents, the maintenance of plumbing systems, and the longevity of water-using appliances. Given the state’s geological diversity, water hardness is not consistent statewide, highlighting the importance of localized water treatment solutions and continuous monitoring of water quality.

In the provided data, the water hardness levels show substantial variations across different cities in Maryland. Among the cities for which data is reported, the highest water hardness levels are recorded in Rising Sun and Elkton, with hardness levels of 125 ppm (7.3 gpg) and 113 ppm (6.6 gpg), respectively.

CityHardness ppm (mg/L)Hardness gpgInformation SourceNotes
Baltimoren/an/aLinkMentions they treat to reduce hardness but don’t quantify
Frederickn/an/aLink
Gaithersburgn/an/aLinkCovered by WSSC
Rockvillen/an/aLink
Bowien/an/aLink
Hagerstownn/an/aLink
Annapolisn/an/aLink
College Parkn/an/aLinkCovered by WSSC
Salisburyn/an/aLink
Laureln/an/aLink
Greenbeltn/an/aLinkCovered by WSSC
Hyattsvillen/an/aLinkCovered by WSSC
Westminstern/an/aLink
Cumberlandn/an/aLink
Aberdeenn/an/aLink
Takoma Parkn/an/aLinkCovered by WSSC
Easton50.02.9Link
Elkton113.06.6Link
Havre de Grace37.02.2Link
New Carrolltonn/an/aLinkCovered by WSSC
Cambridgen/an/aLink
La Platan/an/aLink
Bel Air73.04.3Link
Mount Airyn/an/aLink
Bladensburgn/an/aLinkCovered by WSSC
Brunswickn/an/aLink
Mount Rainiern/an/aLinkCovered by WSSC
Taneytownn/an/aLinkMentions hardness, doesn’t quantify
Riverdale Parkn/an/aLinkCovered by WSSC
Frostburgn/an/aLink
Ocean Cityn/an/aLink
Thurmontn/an/aLink
Walkersvillen/an/aLink
Chesapeake Beachn/an/aLink
Hampsteadn/an/aLink
Glenardenn/an/aLinkCovered by WSSC
Cheverlyn/an/aLinkCovered by WSSC
Fruitlandn/an/aLink
District Heightsn/an/aLinkCovered by WSSC
Poolesvillen/an/aLink
Chestertownn/an/aLink
Manchestern/an/aLink
Berlinn/an/aLink
Middletownn/an/aLink
Dentonn/an/aLink
Leonardtownn/an/aLink
Centrevillen/an/aLink
Delmarn/an/aLink
Perryvillen/an/aLink
Seat Pleasantn/an/aLinkCovered by WSSC
Sykesvillen/an/aLink
Pocomoke Cityn/an/aLink
Indian Headn/an/aLink
North Eastn/an/aLink
Capitol Heightsn/an/aLinkCovered by WSSC
Boonsboron/an/aLink
Brentwoodn/an/aLinkCovered by WSSC
Princess Annen/an/aLink
Berwyn Heightsn/an/aLinkCovered by WSSC
Smithsburgn/an/aLink
Emmitsburgn/an/aLink
Chevy Chasen/an/aLinkCovered by WSSC
Federalsburgn/an/aLink
Rising Sun125.07.3Link
Forest Heightsn/an/aLinkCovered by WSSC
Crisfieldn/an/aLink
University Parkn/an/aLink
Snow Hilln/an/aLink
North Beachn/an/aLink
Mountain Lake Parkn/an/aLink
Kensingtonn/an/aLinkCovered by WSSC
Williamsportn/an/aLink
Hurlockn/an/aLink
Chevy Chase Villagen/an/aLinkCovered by WSSC
Myersvillen/an/aLink
Greensboron/an/aLink
Oaklandn/an/aLink
Westernportn/an/aLink
Landover Hillsn/an/aLinkCovered by WSSC
New Marketn/an/aLinkFrederick County
Pittsvillen/an/aLink
Ridgelyn/an/aLink
Edmonstonn/an/aLinkCovered by WSSC
Hancockn/an/aLink
Colmar Manorn/an/aLinkCovered by WSSC
Charlestownn/an/aLink
Fairmount Heightsn/an/aLink
New Windsorn/an/aLink
Trappen/an/aLink
Cottage Cityn/an/aLinkCovered by WSSC
Keedysvillen/an/aLink
Morningsiden/an/aLinkCovered by WSSC
Rock Halln/an/aLink
Somersetn/an/aLinkCovered by WSSC
Woodsboron/an/aLink
Hebronn/an/aLink
St. Michaelsn/an/aLink
Chevy Chase Viewn/an/aLinkCovered by WSSC
Lonaconingn/an/aLink
Garrett Parkn/an/aLinkCovered by WSSC
Top 100 Maryland cities by population and their reported water hardness
ppm = Parts Per Million
mg/L = Milligrams Per Liter
gpg = Grains Per Gallon

Hard water can cause issues such as mineral buildup in plumbing and appliances, reduce the efficacy of soaps and detergents, and affect the taste of the water. A tried and true solution is the use of a water softener. A water softener, like the ones from DROP, could be a worthwhile investment.

These devices work by replacing the calcium and magnesium ions that cause hardness with sodium ions, resulting in softer water. With innovative features, easy installation, and efficient operation, DROP smart water softeners provide a solution to hard water issues, extending the lifespan of appliances, improving water taste, enhancing soap effectiveness, reducing scale build-up, and increasing the overall water efficiency in your home.

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