Whole House Water Filters for Calcium and Magnesium Reduction

A Complete Feature Rundown

Reduces Water Hardness and Minerals

The 100% Cation Resin water softener filter removes hardness, minerals, and scale deposits for cleaner, softer water. Perfect for low flow rate applications, it utilizes a sodium form cation resin to reduce hardness and scale buildup.

Ideal for Coffee Machines and Washers

Our Cation Resin filter softens water before it reaches your coffee machine or washing machine, protecting these valuable appliances from mineral buildup. It extends the life of your coffee machine and reduces the risk of damage to your washing machine.

Long-lasting with Easy Maintenance

The filter has a lifespan of 6-12 months, depending on water quality. It’s easy to maintain: simply replace the filter in three simple steps—twist the housing cap to open, replace the filter, and twist to close.

Fits Universal Sizes

The standard size of 10 inch x 2.5 inch fits common water softener cartridges including AF-10-3003, WS-10, UDF-10C100E, 155319-43, and can replace any 10" x 2.5" water softener cartridge. Installation is quick and simple.

Optimal Placement in Filtration Systems

Max Water recommends using our Cation Resin filter as a mid-stage filter between a sediment pre-filter and a CTO post-filter to increase the overall filter life cycle and enhance water taste.

Trusted by Millions

With over 15 years of experience in water filtration, Max Water ensures you get reliable and effective solutions. Choose Max Water to meet all your filtration needs and keep your water safe and clean.