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Water Hardness in Oklahoma Cities

Water hardness in Oklahoma, defined by the concentration of dissolved minerals like calcium and magnesium, can vary significantly across the state due to its diverse geological landscapes. Located in the south-central region of the U.S., Oklahoma’s water hardness levels are mixed, reflecting the assortment of geological features within its borders.

Across Oklahoma, the water hardness can range from fairly soft to quite hard, depending on the geology of the area and the source of the water supply. For instance, areas overlying the Arbuckle-Simpson aquifer might have softer water, owing to the rapid movement of water through less mineral-rich strata. In contrast, regions with harder water are often underlain by limestone and other mineral-bearing formations, such as those found in parts of the Osage Plains, leading to higher concentrations of dissolved minerals.

The variation in water hardness throughout Oklahoma impacts not only the taste and aesthetics of the water but also influences the effectiveness of soaps and detergents, plumbing maintenance, and the durability of appliances that use water. Because of the state’s considerable geological diversity, water hardness is not uniform, which highlights the necessity for localized water treatment solutions and continuous monitoring of water quality.

The following data indicates a specific account of water hardness in Norman, Oklahoma, measured at 85.5 ppm (parts per million) or 5.0 gpg (Grains Per Gallon). In Verdigris and Bristow, the water hardness is recorded at 32.7 ppm (1.9 gpg) and 39.8 ppm (2.3 gpg), respectively. Contrastingly, the water hardness level in Perkins is reported to be 36.7 ppm or 2.1 gpg. However, detailed water hardness information is not available for many other cities in Oklahoma, such as Oklahoma City, Tulsa, and Edmond.

CityHardness ppm (mg/L)Hardness gpgInformation SourceNotes
Oklahoma Cityn/an/aLink
Tulsan/an/aLink
Norman85.55.0Link
Broken Arrown/an/aLinkPurchases from Tulsa
Edmondn/an/aLink
Lawtonn/an/aLink
Mooren/an/aLinkPurchases from Oklahoma City
Midwest Cityn/an/aLinkAlkalinity only
Enidn/an/aLink
Stillwatern/an/aLink
Owasson/an/aLinkBuys from Tulsa
Bartlesvillen/an/aLink
Muskogeen/an/aLink
Shawneen/an/aLink
Bixbyn/an/aLinkPurchases from Tulsa
Jenksn/an/aLinkPurchases from Tulsa
Ardmoren/an/aLink
Yukonn/an/aLinkPurchases from Okalhoma City
Ponca Cityn/an/aLink
Duncann/an/aLinkWater Dept website doesn’t have CCR
Sapulpan/an/aLink
Del Cityn/an/aLinkDoesn’t appear to have online CCR
Mustangn/an/aLinkBuys from Oklahoma City
Bethanyn/an/aLink
Sand Springsn/an/aLink
Claremoren/an/aLink
Durantn/an/aLink
Altusn/an/aLink
McAlestern/an/aLink
El Renon/an/aLinkBuys from Oklahoma City
Adan/an/aLink
Tahlequahn/an/aLink
Chickashan/an/aLink
Glenpooln/an/aLinkPurchases from Tulsa
Miamin/an/aLink
Guymonn/an/aLink
Choctawn/an/aLink
Newcastlen/an/aLinkPurchases from Oklahoma City
Woodwardn/an/aLink
Weatherfordn/an/aLink
Elk Cityn/an/aLink
Okmulgeen/an/aLink
Guthrien/an/aLink
Warr Acresn/an/aLinkBuys from Oklahoma City
Cowetan/an/aLink
The Villagen/an/aLinkBuys from Oklahoma City
Pryor Creekn/an/aLink
Blanchardn/an/aLinkPurchases from Oklahoma City
Poteaun/an/aLink
Skiatookn/an/aLinkPrimarily purchases from Tulsa
Sallisawn/an/aLink
Clintonn/an/aLinkDon’t appear to have online CCR, EPA CCR search didn’t bring up anything
Collinsvillen/an/aLink
Cushingn/an/aLink
Piedmontn/an/aLinkPurchases from Oklahoma City
Wagonern/an/aLinkPurchases from Tulsa via Bixby
Tuttlen/an/aLinkPurchases from Oklahoma City via Newcastle
Catoosan/an/aLinkNo online CCR, EPA CCR search brough up nothing either.
Noblen/an/aLink
Seminolen/an/aLink
Groven/an/aLink
Idabeln/an/aLink
Purcelln/an/aLink
Harrahn/an/aLink
Tecumsehn/an/aLink
Blackwelln/an/aLink
Pauls Valleyn/an/aLink
Anadarkon/an/aLink
Holdenvillen/an/aLink
Henryettan/an/aLink
Verdigris32.71.9LinkAs calcium
Vinitan/an/aLinkWater utility doesn’t have an online presence
Hugon/an/aLink
Lone Groven/an/aLinkNo online presence, EPA CCR search also didn’t turn up anything
Alvan/an/aLink
Sulphurn/an/aLink
Kingfishern/an/aLink
Perryn/an/aLink
Marlown/an/aLink
Sayren/an/aLink
Pocolan/an/aLink
Bristow39.82.3LinkAs Calcium
Broken Bown/an/aLink
Slaughtervillen/an/aLinkCovered under Oklahoma City
McLoudn/an/aLinkWater department doesn’t have an online presence, just recommends calling city hall for more info. EPA CCR search also didn’t bring up anything.
Madilln/an/aLink
Spencern/an/aLinkWebsite for water reports is blank. Might be part of Oklahoma City based on map but I”m not certain
Nichols Hillsn/an/aLink
Fort Gibsonn/an/aLink
Elginn/an/aLink
Stilwelln/an/aLink
Frederickn/an/aLink
Rolandn/an/aLinkCity website only has directory information for head of water dept. Found a NYT toxic waters report on Roland but that is the most recent.
Nowatan/an/aLink
Deweyn/an/aLinkBuys from Bartlesville
Hobartn/an/aLink
Muldrown/an/aLinkCity doesn’t have online presence (https://www.citydirectory.us/town-muldrow.html), but found a NYT toxic waters report for it.
Perkins36.72.1LinkAs Calcium
Mannfordn/an/aLinkDon’t appear to have online CCR. EPA search also turned up nothing.
Hominyn/an/aLink
Top 100 Oklahoma 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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