HardWaterHeroHardWaterHero helps you size a water softener and understand whole-house filtration: a grains-per-day calculator, sourced specs and prices, and plain-English NSF/ANSI certification guides. No health promises.https://hardwaterhero.com/How to Find Your Water Hardness: Water Reports, Test Strips, and Lab Testshttps://hardwaterhero.com/articles/how-to-find-your-water-hardness/https://hardwaterhero.com/articles/how-to-find-your-water-hardness/Where to find your hardness number, how to convert ppm/mg/L to grains per gallon, and when a certified lab test is the right move.Mon, 19 Oct 2026 00:00:00 GMTHow to Size a Water Softener: Grains Per Day Math, Step by Stephttps://hardwaterhero.com/articles/how-to-size-a-water-softener/https://hardwaterhero.com/articles/how-to-size-a-water-softener/Work out grains per day from your hardness and household, pick a capacity, and check flow rate. Worked examples plus dated prices from official pages.Mon, 19 Oct 2026 00:00:00 GMTNSF/ANSI 42, 44, 53, 58, 61: What Water Treatment Certifications Meanhttps://hardwaterhero.com/articles/nsf-ansi-water-treatment-certifications-explained/https://hardwaterhero.com/articles/nsf-ansi-water-treatment-certifications-explained/A plain-English guide to the NSF/ANSI standards on softeners and filters, the difference between certified systems and certified components, and how to check a listing.Mon, 19 Oct 2026 00:00:00 GMT