Disadvantages of a Reverse Osmosis Water Treatment
Disadvantages of a Reverse Osmosis
Reverse osmosis cannot remove organic chemicals such as, pesticides and solvents.
Reverse osmosis cannot remove dissolved gases, such as radon and trihalomethanes, either.
The R/O system takes up a lot of space, which in some homes or businesses, space is limited. The storage tank then holds the treated water for future use. The process is usually too slow to provide purified water on demand.
NOTE: A Health Craft under-the-sink water purifier will provide continuous pure water every time you turn on the faucet without removing the minerals.
Reverse osmosis has several disadvantages that make it impractical for treating all of the water entering your home. For each gallon of water produced, two to as much as twenty gallons of water are lost and wasted in the process.
Reverse osmosis units can be expensive. Cost of a unit along with installation can cost more than one thousand dollars.
The RO membranes are subject to decay and require periodic replacement. As they decay, the quality of the treated water becomes poorer. Hard water can shorten the life span of the RO membrane.
A water softener most likely will be necessary to keep the membrane working at its best. So now there is an added cost, plus monthly salt replenishment.
Reverse osmosis units should not be used to treat water that contains harmful microorganisms. Small holes in a worn membrane can allow microorganisms to pass through with the treated water.
- Most reverse osmosis drinking water systems use a storage tank with a total capacity of 4.0 gallons, approximately 1.5 gallons of which is a bladder of air, leaving a total of about 2.5 gallons capacity in which to store filtered water.
- Even though a reverse osmosis water storage tank is a quite simple device, it still has a bladder that expands and contracts. This is a moving part, and like any moving part, it will wear out eventually.
- Over time, air will seep out of the tank, causing the storage tank to lose its pressure charge and your water’s flow rate to decrease significantly.
- You have to change out the reverse osmosis filters every 12 months.
At least 23 steps necessary to Sanitize a Reverse osmosis tank……ANNUALLY.
- Wash your hands.
- Turn off the water supply line to your RO unit.
- Open the system’s faucet and drain the tank.
- You want to make sure you drain the system entirely of water.
- Remove all pre-filters and the membrane.
- Open up all the filter housing and remove the filters.
- Reconnect the filter housings to the system.
- Replace all housing back on the system, except for the pre-filter housing.
- Pour the sanitizing solution into the pre-filter.
- Turn the water supply back on.
- Allow the storage tank to fill up with water.
- Allow the solution to sit.
- Flush the entire system.
- Open the faucet and allow the reverse osmosis system to flush itself.
- Wait around five minutes.
- Allow the tank to again fill with water before flushing it a second time to ensure all traces of sanitization solution exits the tank.
- Disconnect the water supply and drain the system.
- Disconnect the water supply and open the faucet.
- Wait until all the water drains out of the system and the tank completely depressurizes.
- Replace all the filters and membranes.
- Reconnect the water supply.
- If you disconnected any icemaker or refrigerator connections, reattach them at this time.
- Allow the storage tank to refill with water, and you are ready to use your reverse osmosis system again.
According to the EPA, “Reverse osmosis units use approximately three times as much water as they treat,” which may be reflected on your water bill. In fact, some household reverse osmosis systems only recover between 5%-15% of the water they filter.
Many people using reverse osmosis filters experience a fairly noticeable pressure drop in their water flow rate.
Additionally, there are not many options for the proper disposal of wastewater. You can dispose of the wastewater into the sea, but for those who are landlocked, you should consider an evaporation system to avoid runoff or groundwater contamination, as it can be detrimental to the ecosystem.
Reverse osmosis systems remove healthy and vital nutrients existing in water.
SEE BELOW for expert facts:
“Most people are under the impression the RO systems excel at removing water impurities, but few are aware that they remove the beneficial minerals. In fact, the reverse-osmosis process removes 92 to 99 percent of beneficial calcium and magnesium. What is alarming, is that consuming RO water for even just a few months can create serious side effects. But it gets even worse. Because RO water does not have enough minerals. When it is consumed, it also leaches minerals from the body. This means that the minerals being consumed in food and vitamins are being urinated away. Hence, whatever the claims could be from the RO suppliers, drinking water treated using RO technology is definitely hazardous to health.”
Arthur L. Guyton, MD in his Textbook of Medical Physiology, 11th Edition2 states: “Homeostasis is the maintenance of static or constant conditions in the internal body environment. This natural process controls the mineral (ion) and the water concentrations in the body fluids within narrow limits inside and outside all the cells in all the organs and tissues of the body. The kidneys are most important in maintaining constant ion concentrations (including sodium, potassium, calcium, etc.) through elimination and reabsorption. In homeostasis, three body fluids are involved: plasma (approximately 3/5 of the blood volume); interstitial fluid (the fluid between cells); and the intracellular (fluid inside the cells).”
Guyton explains further: “The kidneys control the overall concentration of the constituents of body fluids. It filters about 180 liters (165 quarts) of water per day, but over 99% is reabsorbed and only 1.0-1.5 liters are eliminated as urine. If the osmolality of the fluid to be filtered by the kidney is lower than normal (lower solute concentration, such as low TDS water) nervous and hormonal feedback mechanisms cause the kidney to excrete more water than normal and thus maintain the ion concentration of fluid to normal values. The opposite is true if the ion concentration of the fluid to be filtered is higher than normal. The three basic hormonal and nervous control systems triggered by abnormal ion concentration in the body fluids to be filtered by the kidney are antidiuretic hormone (ADH) from the pituitary gland, aldosterone from the adrenal glands, and thirst (as osmolality rise of about 1% causes thirst).”