Reverse Osmosis Water Filtration System for Home

Sullivan Trerom, 06-10-2020

The water we consume contains residues of industrial waste, treated sewage, agricultural chemicals,  heavy metals, pharmaceuticals, disinfectants and their byproducts, etc. Disinfectants like chloramines and chlorine, acid neutralizers and others may cause the creation of disinfection byproducts HAA (haloacetic acids) and THM (trihalomethanes). 210 million Americans have fluoridated municipal water without the consent of the consumers. All of these contaminants negatively affect health, especially in the case of children. Growing awareness of the problem is why more consumers are seeking the reverse osmosis water filtration system for home, including whole house units.

APEC reverse osmosis water filtration system for home
The best reverse osmosis water filtration system

However, about half of all the water consumed by the average household is used for flushing toilets. It seems to me purify water with RO system to the top-level quality to then flush it down is a waste of resources. Thus, economically effective is using whole house water softener with rough 10-20 micron filter and point-of-use reverse osmosis system for drinking water, ice-making, etc.

A reverse osmosis water filtration system eliminates contaminant’s molecules, ions and larger particles using a semipermeable membrane. Reverse Osmosis systems purify water through usually multiple stages including deionization, sediment ultraviolet light, filtration with pre- and post-carbon filters in conjunction with using reverse osmosis membranes. The systems remove more contaminants than carbon filters, including fluoride, nitrates and nitrites, selenium, perchlorates, sulfates, etc. As a result, pure water passes to the other side of the membrane and concentrated water waste usually goes to the sewer. Usually, reverse osmosis water filtration system for home waste up to 4 gallons per 1 gallon purified water.

The osmosis process is non-selective and removes all component of the solution, including ‘needed’ magnesium and calcium. As a result, the water has an unpleasant taste and due to the lack of dissolved minerals have some of the adverse effects. To add some of the good minerals and eliminate the negative aspects you can apply the process of remineralizing. The process is performed by after-filtering with a special calcium carbonate and a magnesium compound unit. The water passes through the unit and it dissolves some of the calcium and magnesium. Corosex (magnesium oxide) will bring the pH above 7 – ‘alkaline’ water.

Alkaline water in the strict definition is any solution that has greater than 7 pH is basic. Alkalinity is the solution’s acid-neutralizing capability. The health effects of consuming basic pH and alkaline water in the scientific community are not firmly established. But definitely, some people find remineralized reverse osmosis water to be tastier. Reverse osmosis water filtration system with remineralization completely eliminate the need to buy bottled water and it will pay for itself in about a year or two (depends on water consumption).

Most of the RO systems for a home are POU (point of use) and since they are quite big, it is convenient to place them under the sink. Sometimes better to install the unit in a laundry room, so you don’t need to drill through granite. Reverse Osmosis systems came in a box with everything needed including fittings and pipes. All you need are common tools (scissors, wrench, etc). Installation is not hard and will take about an hour. The manuals are usually clear and you can find many youtube videos that show how to install the system (see the example below).

It is very important to cut clean all hoses so the ends are square before making the connections. Also, you need to push plastic tubes firmly into their place, past the first point of resistance, until you feel the stop. You might have leaks if you skip these steps. When you first turn on the water, check the system carefully. If there is a leak, just readjust the tube.

Before running the water through the system for the first time disconnect the input hose to the reverse osmosis membrane and flush into a bucket the first three stages. You will remove residual carbon that better not to send into the osmosis membrane. Connect the hose to the membrane after water runs clear. The storage tank fills in about two hours. Open the faucet and let it drain completely and re-fill. The water will gradually become very clear.

Overall, RO system installation is not a problem, anybody can do it.

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