Each system is fully upgradeable. Alkaline Filters help add minerals and extra oxygen to your water. Deionization Filters help remove even trace minerals making water fit for aquariums, humidifiers, and other machines. Ultraviolet Sterilizers help el

Each system is fully upgradeable. Alkaline Filters help add minerals and extra oxygen to your water. Deionization Filters help remove even trace minerals making water fit for aquariums, humidifiers, and other machines. Ultraviolet Sterilizers help eliminate microbial life from water where this is a concern. Check the Upgrades and Accessories section at expresswater.com for more information.

Filter Upgrades: Can I add additional filters to my current system?

The RO System can be connected to a refrigerator or icemaker. But you may need an Express Water Refrigerator Kit to do so. In some cases, your situation may require a separate tank or Delivery Pump depending on how far away your refrigerator is from

The RO System can be connected to a refrigerator or icemaker. But you may need an Express Water Refrigerator Kit to do so. In some cases, your situation may require a separate tank or Delivery Pump depending on how far away your refrigerator is from the unit. Contact Express Water and we&#x2019;ll help you find your solution.

Refrigerator and Ice Makers: Can I connect this system to a refrigerator or icemaker?

To upgrade your system from 50 GDP to 100 GDP you will need different parts (such as the RO Membrane and Flow Restrictor). Contact Express Water and we will help you arrange your upgrade. Email: support@expresswater.com. Call: (800) 992-8876. 10am-5p

To upgrade your system from 50 GDP to 100 GDP you will need different parts (such as the RO Membrane and Flow Restrictor). Contact Express Water and we will help you arrange your upgrade.Email: support@expresswater.comCall: (800) 992-887610am-5pm PST Monday-Friday

System Upgrades: Can I change my 50 GPD (Gallons Per Day) system to 100 GDP? If so, how?

Express Water

Water Filter Upgrades

What is Reverse Osmosis?

How Does Reverse Osmosis Work?

Express Water Reverse Osmosis Filters

Reverse Osmosis

Total Dissolved Solids (TDS): What are they?  Total Dissolved Solids (TDS) are all organic and inorganic contaminants that have been dissolved into water. These contaminants are gathered from everything water comes into contact with before it finds i

Contaminants: What contaminants are reduced by Reverse Osmosis?

Does Reverse Osmosis remove Parasites, Bacteria, Cysts, and Cryptosporidium?

What happens to filtered impurities?

Drinking Water Contaminants

Water Pressure: How important is water pressure to an RO System?

Iron: Will iron hurt an RO System?

Water Differences and Dissolved Solids: How is RO Water different from tap water? How will I know the RO System is removing Dissolved Solids from my tap water?

Lifespan: How long does the system last? How long does the tank last?

My Home: How do I know this system will work in my home?

System Life: How long does the system last? How long does the tank last?

Tank Capacity: How much water can the Water Storage Tank hold?

Express Water Reverse Osmosis Systems

Water Softeners: Does a water softener treat my drinking water?

Water Softeners: Will a water softener harm a Reverse Osmosis System?

Water Softeners: Will an RO System soften water?

Water Softeners: How do water softeners work with the RO System?

Water Softeners & Reverse Osmosis Systems

Do RO Systems send water down the drain?

What is the discharge rate?

What is the ratio of wastewater to pure water produced by an Express Water RO System?  Your water pressure, incoming water quality, and water temperature will affect your RO System’s discharge rate.

Can wastewater be saved and used?

RO Waste Water & Wastewater Discharge

Filter Changes: Is it necessary to change the filters every six months?

Flow Restrictor: Is it necessary to change the Flow Restrictor when I change the RO Membrane?

Filter Changes: Is it necessary to change the filters every six month?

Water Filter User Manuals

Mounting Locations: Does the RO System have to be under the kitchen sink?  No, the RO System can be mounted in a cabinet to either side of the kitchen sink or even mounted remotely in a garage or basement.

Dimensions: What are the dimensions of an Express Water RO System?

Line Length Maximum: How far can a line run from the RO System?

Copper Tubing: Why not use copper tubing with an RO System?

Install Locations: Can I install this system in the basement? Can I install somewhere other than under my sink?

Water Filter User Manuals & Installation FAQs

Shipping: When will I get my package?

Returns: How do returns work?

Warranty: How does the warranty work?

Canceling an Order: How do I cancel an order?

Technical Difficulties: I’m having trouble using the site or getting through checkout, what should I do?

Ordering and Website Support