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Tapworks ERO385 Reverse Osmosis System


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Tapworks ERO 385
Reverse Osmosis

The Tapworks ERO 385 is an under-counter reverse osmosis system which discreetly sits underneath the sink and is designed to produce pure water for drinking and cooking.

Everyday tap water often harbours dissolved metals which could be lurking in your water, such as:

  • Arsenic
  • Chlorine
  • Iron
  • Lead
  • Mineral Salts
  • Nitrates
  • Sulfates


Thankfully, you can say goodbye to water quality concerns as the Tapworks drinking water system becomes your key to accessing cleaner, clearer water.


A reverse osmosis system with a tank and faucet

Experience the remarkable capability of generating 50 gallons of purified water daily and a noticeable decrease in PFOA, PFOS, and VOCs with a near perfect 1:1 waste drain ratio.

Under-sink filtration

Transform your water into a luxurious experience with our advanced purification system.

Eliminate Chlorine, odours, enhance taste, and enjoy the long-lasting benefits of activated carbon, ensuring that your tap consistently delivers clean, filtered water

Microplastics eradicated

Reverse Osmosis systems bid farewell to water microplastics

A picture showing how the Reverse Osmosis process works


No more odours

Say farewell to funny smells; enjoy odourless, great-tasting water every time

Water filter

Crystal-clear water

Enjoy perfectly clear water with no impurities, with this patented technology.

✔ Removes 92 total containments

✔ Removes 99.1% of Lead

✔ Bisphenol (BPA) Free

✔ Daily output of 50 gallons per day

✔ An almost perfect 1:1 process water ratio


Benefit from the power of industry-leading technology and components crafted solely from corrosion-resistant materials, the result of nearly 100 years of invaluable experience in the industry.

🌍Save money in the long term without depending on bottled water.

🌍Provides premium bottled water quality.

🌍Offer unrivalled reduction of advanced contaminants such as PFOA, PFOS and pharmaceuticals

Fast and simple filter replacement

Can fit under most kitchen or bathroom sinks.

Why does a Reverse Osmosis System need a tank?

Reverse osmosis membranes are semi-permeable and have extremely small pores. Because they are so small, the production of pure water is a very slow process.

Residential reverse osmosis membranes typically require 2-4 hours to generate 3 gallons of pure water, making storage a sensible choice.

Warranty Information


  • 10 years storage tank
  • 7 years electronics
  • 5 years Reverse Osmosis System 
  • 3 years on faucet  
  • 1 year on Reverse Osmosis Membrane
  • The service life of the membrane and filter cartridges is dependent on the feedwater quality. Filters are not covered by the warranty.


How do I replace the Filter?

With manifolds, a built-in shutoff valve activates when the filter is released, eliminating the need for shutting off the water manually.

To release the filter, simply twist it 180 degrees clockwise, and when replacing, secure the new one by twisting it 180 degrees counter-clockwise. Make sure to start with the label facing the back of the system, and don't forget to record the date on the new filter.

For optimal performance, change the filters every 6 months or 1 year, depending on usage and filter type

picture of a reverse osmosis filter being replaced

How do I replace the membrane?

The replacement process for a membrane is the same as it is for the filters, but with a few extra steps. 

The first step is to turn off the water to the system as well as the valve on the tank if possible, and then to open the faucet to release pressure in the system. If you do not have a valve on the tank, you can store the water that comes out of the faucet so it does not go to waste.

Push in the red ring around the tube and pull the tube out of the manifold. Carefully pull the restrictor out of the tube and push in the new one, then push the tube back into the manifold as far as it will go. Once the membrane and restrictor have been replaced, flush the membrane by opening the faucet and letting the water dribble out slowly for 8 hours.

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