How hard is the water in Delaware?

The average water hardness across Delaware is 86 PPM (5 GPG), classified as slightly hard. Hardness varies by city - the hardest water is in Smyrna (101 PPM) and the softest is in Long Neck (80 PPM).

What city in Delaware has the hardest water?

Smyrna has the hardest water in Delaware at 101 PPM. A water softener is recommended for residents.

How many water systems are in Delaware?

Delaware has 207 active community water systems serving 56 cities.

Water Hardness in Delaware

Average: 86 PPMSlightly Hard56 cities207 water systems

Top 10 Hardest Water Cities

#	City	Hardness
1	Smyrna	Slightly Hard (101 PPM)
2	Clayton	Slightly Hard (101 PPM)
3	Magnolia	Slightly Hard (100 PPM)
4	Dover	Slightly Hard (100 PPM)
5	Dover Afb	Slightly Hard (100 PPM)
6	Hartly	Slightly Hard (100 PPM)
7	Houston	Slightly Hard (100 PPM)
8	Kenton	Slightly Hard (100 PPM)
9	Marydel	Slightly Hard (100 PPM)
10	Viola	Slightly Hard (100 PPM)

Top 10 Softest Water Cities

#	City	Hardness
1	Long Neck	Slightly Hard (80 PPM)
2	Claymont	Slightly Hard (80 PPM)
3	Edgemoor	Slightly Hard (80 PPM)
4	Greenville	Slightly Hard (80 PPM)
5	Hockessin	Slightly Hard (80 PPM)
6	Marshallton	Slightly Hard (80 PPM)
7	Montchanin	Slightly Hard (80 PPM)
8	Newport	Slightly Hard (80 PPM)
9	Port Penn	Slightly Hard (80 PPM)
10	Rockland	Slightly Hard (80 PPM)

All Cities in Delaware

BearSlightly Hard Bethany BeachSlightly Hard BethelSlightly Hard BridgevilleSlightly Hard Camden WyomingSlightly Hard ClaymontSlightly Hard ClaytonSlightly Hard DagsboroSlightly Hard Delaware CitySlightly Hard DelmarSlightly Hard Dewey BeachSlightly Hard DoverSlightly Hard Dover AfbSlightly Hard EdgemoorSlightly Hard EllendaleSlightly Hard FeltonSlightly Hard Fenwick IslandSlightly Hard FrankfordSlightly Hard FredericaSlightly Hard GeorgetownSlightly Hard GreenvilleSlightly Hard GreenwoodSlightly Hard HarbesonSlightly Hard HarringtonSlightly Hard HartlySlightly Hard HockessinSlightly Hard HoustonSlightly Hard KentonSlightly Hard LaurelSlightly Hard LewesSlightly Hard LincolnSlightly Hard Long NeckSlightly Hard MagnoliaSlightly Hard ManorSlightly Hard MarshalltonSlightly Hard MarydelSlightly Hard MiddletownSlightly Hard MilfordSlightly Hard MillvilleSlightly Hard MiltonSlightly Hard MontchaninSlightly Hard NewarkSlightly Hard NewportSlightly Hard OdessaSlightly Hard Port PennSlightly Hard RocklandSlightly Hard Saint GeorgesSlightly Hard SeafordSlightly Hard SelbyvilleSlightly Hard SmyrnaSlightly Hard TalleyvilleSlightly Hard TownsendSlightly Hard ViolaSlightly Hard WilmingtonSlightly Hard WoodsideSlightly Hard YorklynSlightly Hard