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Water Hardness in Delaware Cities

Water hardness in Delaware, characterized by the amount of dissolved minerals such as calcium and magnesium, can significantly differ among various cities across the state due to its varied geological landscapes. Situated on the East Coast of the U.S., Delaware’s water hardness levels reflect the geological diversity within the state.

Across Delaware, water hardness can range from moderately soft to very hard, depending on the geological makeup of the area and the source of the water supply. For example, coastal areas often have softer water due to the influence of river basins and the Atlantic Coastal Plain’s sedimentary deposits, while regions in the northern part of the state near the Piedmont may experience harder water due to the presence of metamorphic rock formations.

The variation in water hardness throughout Delaware influences not only the taste and aesthetics of the water but also the efficiency of soaps and detergents, plumbing maintenance, and the lifespan of appliances that utilize water. Given the state’s considerable geological diversity, water hardness is not uniform, highlighting the need for localized water treatment solutions and ongoing monitoring of water quality.

In the provided data, the water hardness levels show substantial variations across different cities in Delaware. Among the cities for which data is reported, the highest water hardness level is recorded in Odessa with a hardness of 130.0 ppm, 7.59 gpg. Conversely, the city with the lowest recorded water hardness level is Ocean View, reporting a hardness of 12.0 ppm, 0.70 gpg.

CityHardness ppm (mg/L)Hardness gpgInformation SourceNotes
Newarkn/an/aLinkAlkalinity only
Middletownn/an/aLinkAlkalinity only
Smyrnan/an/aLinkAlkalinity only
Elsmere120.507.04LinkCovered by Wilmington
New Castlen/an/aLink
Laureln/an/aLinkAlkalinity only
Claytonn/an/aLinkAlkalinity only
Harringtonn/an/aLinkAlkalinity only
Miltonn/an/aLinkAlkalinity only
Ocean View12.000.70Link
Bridgevillen/an/aLinkAlkalinity only
Delmarn/an/aLinkSearched through linked website for source water assessment
Cheswold42.002.45LinkCovered by Burtonwood Village Water System
Delaware City24.501.43Link
Wyomingn/an/aLinkAlkalinity only
Feltonn/an/aLinkAlkalinity only
Bladesn/an/aLinkAlkalinity only
Rehoboth Beachn/an/aLinkAlkalinity only
Frederican/an/aLinkAlkalinity only
Greenwoodn/an/aLinkAlkalinity only
Bethany Beachn/an/aLinkAlkalinity only
Dagsboro47.002.75LinkPart of Southern Sussex Regional Water
Frankfordn/an/aLinkAlkalinity only
Ellendalen/an/aLinkAll but one neighborhood use individual wells.
South Bethany83.004.85Link
Houstonn/an/aLinkNo online CCR, only thing in EPA search was a campground.
Dewey Beachn/an/aLink
Fenwick Island47.002.75LinkPart of Southern Sussex Regional Water
Bowersn/an/aLinkCovered by Frederica
Magnolian/an/aLinkAlkalinity only
Bethel47.002.75LinkPart of Southern Sussex Regional Water
Slaughter Beach84.004.91Link
Kentonn/an/aLinkDoesn’t appear to have online water utility. Nothing turning up on EPA search either. Might be all wells
Little Creekn/an/aLink
Henlopen Acresn/an/aLinkAlkalinity only
Delaware 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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