What causes white crystals in plumbing water lines?

Answer by  jkc (258)

Lime scale or hard water causes this build up of crystaline deposits causing a build up of blockages depending on water qualities in certain areas, this can be treated with water treatment.

Answer by  Hungry (30)

The white crystals in your plumbing water lines are most likely calcium showing that you need to have your water checked to see if it is hard or soft. One way to know is if your soap gets really foamy or not. If it lathers then it is some other problem.

Answer by  hobominer (184)

It may be calcium, fluoride or similar deposits from years of water flow. Water contains small amounts of minerals/metals and these build up over time.

Answer by  kipcat (1964)

You likely live in a water district that treats it's water with calcium and fluoride. This causes a build up on the appliances when water evaporates and leaves behind the minerals. These deposits are a nuisance but harmless. Get some CLR and clean it off.

Answer by  pbkprajeeshgmailcom (4)

White crystals are Purifing water. In plumbing 60% of people using white crystals. In india all of the people using white crystals in plumbing water lines. I think white crystals are better than other crystals.