I once lived in an apartment where the water was so hard, it felt like taking a shower in a slightly aggressive sandbox. My hair turned brittle, and my kettle looked like it was growing a white coral reef inside it. I finally bought a cheap test strip, and the color practically glowed with hardness.
4 ways to measure water hardness _ how to check water hardness – PBFF
I learned that my dishwasher needed a rinse aid, and my coffee maker needed a vinegar flush every month. It wasn’t a perfect fix, but knowing the enemy made the battle so much easier. Ignoring it just meant paying for a new water heater sooner than I wanted.