Express Water

ALK System Filter Set

200 reviews


- 1 +

Your water is mineralized totally naturally with our Active Mineral technology. Our minerals are ionically activated so your water picks up more mineral content as it passes through five types of mineral rocks. This is the same way that the healthiest natural springs on Earth add minerals.

• Calcium, Potassium, Magnesium, and other minerals your body needs, right in your water

• A great source of antioxidants to help you recover energy

• Up to 20% more oxygen than regular water

• Higher pH helps balance your water and keep your body at a healthy pH

About The Filters

Reverse Osmosis Replacement Water Filters: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99.99% of impurities.

Reverse Osmosis Filter Replacement Set: Each Express Water replacement filter is specially designed to work together and compliment each other. Get the cleanest water and the best value in your filtration.

Alkaline Filter: The Alkaline Mineralization filter uses a five-stage mineralization process to create the freshest, best-tasting drinking water the same way as the healthiest natural water sources on Earth.

Reverse Osmosis Membrane: The RO Membrane is specially designed with density graded layers of filtration to filter the hardest to remove impurities like dissolved solids, microplastics, fluoride, Heavy Metals, and more.

Sediment Water Filter: Keep the most damaging sediments out of your drinking water and protect your other filters from coarse impurities including rust, sand, dirt and silt.

Replacement Water Filter: Express Water filters are made with the highest quality materials for long-lasting filtration and value.

On Demand Support: Support from experts who can answer any of your questions about your replacement water filters


Express Water

About your RO System

Customer Reviews
4.9 Based on 200 Reviews
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Filter Reviews:
Thomas P.
United States United States

Filter change

It was my third filter can. This last change was need be ause of INA hurricane. Short life be of bad water from storm. Gauge on whole house system showed large pressure drop. Good news they did there job. Had good tasting water all time.Cape Coral water not best tasting water before I installed both whole house filters & R.O. for cooking & drinking. No more bad taste when brushing teeth or showering.

United States United States

Change filters under kitchen sink

Was difficult to follow the lines under sink to disconnect and reconnect - took 2 hours to complete

Bill W.
United States United States

Love the products!

Years ago, I made a switch to Express from another company. That company offered an acceptable product, yet the customer service became nearly non-existent. Upon moving to Express, their product was superior to the other company, and of course the customer service thus far has been outstanding. I also love being able to purchase a 3-year supply of filters at a discount. This makes life easier. Thanks Express Water!!!

Sergio G.
United States United States


Great product, received quickly. Installation is supper fast. You can definitely taste a difference with the alkaline filter.

David H.
United States United States

Great filters

The filters are easy to install and help our hard water taste so much better.