Logan, Utah Water Hardness & Water Softener Guide
Logan’s water utility publishes a hardness of 12-14 (255 ppm). Here is what that means for your plumbing and what it costs to treat.
Where Logan’s water comes from
Dewitt Spring plus four wells. Source: loganutah.gov · 2025
Is Logan hard water?
The USGS calls water above 180 mg/L as calcium carbonate — roughly 10.5 grains per gallon — very hard, 121 to 180 mg/L hard, and 61 to 120 mg/L moderately hard. (USGS). At 12-14 (255 ppm), Logan sits in the very hard band. Fixtures and glass show it last; the heater shows it first.
What CASA recommends in Logan
We will not tell you what you need in Logan before measuring it, because neither we nor the city knows your hardness. The test is free and the number goes in writing.
Water hardness in nearby cities
Logan water hardness FAQ
How hard is the water in Logan, Utah? Logan is published at 12-14 (255 ppm). Source: loganutah.gov · 2025
Where does Logan get its drinking water? Dewitt Spring plus four wells.
Do I need a water softener in Logan? That depends on your measured hardness, not on a citywide average. We test first and size the system to the result.
How do I find my exact hardness? Book a free CASA water test. We measure at your tap and put the number in writing. How the scale works.
Free Logan water test
We measure your exact hardness and recommend the right system — no pressure, flat written quote.
