Both city water and well water contain minerals and sediment. Minerals cause water spots. Sediment is responsible for micro-marring. Even if you take every possible precaution to protect your vehicle's paint from swirls and water spots, you're still leaving it completely vulnerable if you don't have a water filter.
Minerals, particularly calcium and magnesium, are what constitute "hard water". It is responsible for spots, poor-lathering shampoo, and that green ring around your bathtub. When you rinse with it, you could be dousing your vehicle with hard mineral deposits. The only way to resolve this problem is with a water softener filter.
Lanlang DI softener cartridge filter is is a designed to give multi meg-ohm quality water for domestic and industrial areas use(such as laboratory, electronics, car or window rinse, aquarium, etc).The highly purified ion exchange resins will deliver high purity water with a minimum TOC background.
We have common yellow one, and changing color ones. If the media in filter is exhausting, it will change color, then you know when you need to replace media in it or replace the softener cartridge filter. If you want to know more about the softener cartridge filter, welcome to contact us！