Water hardness in Alaska, defined by the concentration of dissolved minerals like calcium and magnesium, varies across the state, though it tends to be on the lower end of the scale compared to other regions. Alaska’s geological features, such as its volcanic and glacial formations, play a key role in the lower mineral content found in much of its water supply.
In Alaska, water is generally classified as soft to moderately hard. Glacial meltwater, which supplies much of the state, has very low mineral content. However, areas with sedimentary or volcanic rock formations, particularly in parts of the interior or regions with significant mining activity, may have slightly harder water.
This variation in water hardness impacts the performance of soaps and detergents, as well as the maintenance of plumbing systems and the lifespan of water-using appliances. While water hardness in Alaska is generally lower, monitoring water quality and implementing localized treatment solutions remain important for ensuring water meets household needs.
In the provided data, the water hardness levels show substantial variations across different cities in Alaska. Among the cities for which data is reported, the highest water hardness levels are recorded in Palmer and Anaktuvuk Pass, with hardness levels of 180 ppm (10.5 gpg) and 160 ppm (9.3 gpg), respectively.
City | Hardness ppm (mg/L) | Hardness gpg | Information Source | Notes |
Anchorage | 108.0 | 6.3 | Link | |
Fairbanks | 142.0 | 8.3 | Link | |
Juneau | n/a | n/a | Link | |
Wasilla | n/a | n/a | Link | |
Sitka | n/a | n/a | Link | |
Ketchikan | n/a | n/a | Link | |
Kenai | n/a | n/a | Link | |
Palmer | 180.0 | 10.5 | Link | |
Bethel | n/a | n/a | Link | |
Homer | n/a | n/a | Link | |
Kodiak | n/a | n/a | Link | |
Utqiagvik | n/a | n/a | Link | Don’t have a public water department |
Soldotna | n/a | n/a | Link | |
Unalaska | n/a | n/a | Link | |
Valdez | n/a | n/a | Link | |
Nome | n/a | n/a | Link | Use mostly wellwater, don’t have CCR or quality monitoring, but it is under development per the risk assessment report |
Kotzebue | n/a | n/a | Link | Says they test for hardness, but don’t provide ppm/gpg |
Seward | n/a | n/a | Link | |
Cordova | n/a | n/a | Link | |
North Pole | n/a | n/a | Link | |
Houston | n/a | n/a | Link | Don’t appear to have a public water utility |
Dillingham | n/a | n/a | Link | |
Wrangell | n/a | n/a | Link | |
Akutan | n/a | n/a | Link | Was only able to find a source water assessment. |
Hooper Bay | 65.8 | 3.8 | Link | |
Craig | n/a | n/a | Link | |
Delta Junction | n/a | n/a | Link | |
Hoonah | n/a | n/a | Link | |
Chevak | n/a | n/a | Link | |
Savoonga | n/a | n/a | Link | Alkalinity only |
Emmonak | n/a | n/a | Link | |
Kwethluk | n/a | n/a | Link | Alkalinity only |
Point Hope | 1.0 | 0.1 | Link | |
Togiak | n/a | n/a | Link | |
King Cove | n/a | n/a | Link | |
Selawik | n/a | n/a | Link | Alkalinity only |
Quinhagak | n/a | n/a | Link | Alkalinity only |
Unalakleet | n/a | n/a | Link | |
Alakanuk | n/a | n/a | Link | Alkalinity only |
Klawock | n/a | n/a | Link | |
Noorvik | n/a | n/a | Link | Alkalinity only |
Toksook Bay | n/a | n/a | Link | Alkalinity only |
Kotlik | n/a | n/a | Link | |
Gambell | n/a | n/a | Link | Alkalinity only |
Gustavus | n/a | n/a | Link | |
Stebbins | n/a | n/a | Link | |
Sand Point | n/a | n/a | Link | |
Mountain Village | n/a | n/a | Link | |
Pilot Station | n/a | n/a | Link | |
Kachemak | 80.1 | 4.7 | Link | |
Wainwright | 0.6 | 0.0 | Link | |
Nunapitchuk | n/a | n/a | Link | |
Scammon Bay | n/a | n/a | Link | |
St. Mary’s | n/a | n/a | Link | Nothing turned up searching the Alaska Water Systems website, nor does St. Mary’s have a website |
Shishmaref | n/a | n/a | Link | |
Kake | n/a | n/a | Link | |
Buckland | n/a | n/a | Link | |
Aniak | n/a | n/a | Link | |
Napaskiak | n/a | n/a | Link | Alkalinity only |
New Stuyahok | n/a | n/a | Link | |
Chefornak | n/a | n/a | Link | Alkalinity only |
Nuiqsut | 1.1 | 0.1 | Link | |
Marshall | n/a | n/a | Link | |
Thorne Bay | n/a | n/a | Link | |
Manokotak | n/a | n/a | Link | |
Galena | n/a | n/a | Link | Alkalinity only |
Akiak | n/a | n/a | Link | |
St. Michael | n/a | n/a | Link | Alkalinity only |
Kiana | n/a | n/a | Link | |
Kivalina | n/a | n/a | Link | |
Brevig Mission | n/a | n/a | Link | Alkalinity only |
Fort Yukon | n/a | n/a | Link | Doesn’t have any sample results online |
Russian Mission | n/a | n/a | Link | Alkalinity only |
Anaktuvuk Pass | 160.0 | 9.3 | Link | |
False Pass | n/a | n/a | Link | |
St. Paul | n/a | n/a | Link | |
Eek | n/a | n/a | Link | Alkalinity only |
Saxman | n/a | n/a | Link | |
Hydaburg | n/a | n/a | Link | |
Elim | n/a | n/a | Link | Alkalinity only |
Napakiak | n/a | n/a | Link | |
Nenana | n/a | n/a | Link | Alkalinity only |
Angoon | n/a | n/a | Link | |
Koyuk | n/a | n/a | Link | |
Huslia | n/a | n/a | Link | Alkalinity only |
Nightmute | n/a | n/a | Link | |
McGrath | n/a | n/a | Link | |
Kaktovik | 25.0 | 1.5 | Link | |
Lower Kalskag | n/a | n/a | Link | Alkalinity only |
Whittier | n/a | n/a | Link | |
Atqasuk | 3.5 | 0.2 | Link | |
Ambler | n/a | n/a | Link | |
Shungnak | n/a | n/a | Link | |
Goodnews Bay | n/a | n/a | Link | Alkalinity only |
Seldovia | n/a | n/a | Link | |
Teller | n/a | n/a | Link | Alkalinity only |
Tanana | 5.6 | 0.3 | Link | |
Nulato | n/a | n/a | Link | |
Nunam Iqua | n/a | n/a | Link | |
Upper Kalskag | n/a | n/a | Link |
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.