Most people are not aware of how much water gets wasted in their reverse osmosis water purifier. A company will claim 1:2 ratio but that is mostly not the case. Most ro water purifiers will discard 80% of the water.
I have measured the amount of water that gets wasted as I collect all the extra water to be used for other household purposes. My reverse osmosis water purifier discards at least 4 to 5 L of water and that's in summers and when the membrane is new and unclogged.
Most people do not know that a reverse osmosis water purifying system discards a lot more water the colder the water gets. So it's not surprising for the amount of discarded water to double in winters.
Another important observation that I have made is that even though the membrane life is 6000 L , there is degradation in its performance after the first 1500 L or so. It starts to discard a lot more water to filter each litre of clean water. This happens because all the filtered out TDS starts to clog the membrane pores.
After about 2000 L Of usage, the water wastage in my reverse osmosis water purifier multiplied by three times. Even if you are not collecting the discarded water, you can tell that the performance has degraded and more water is being wasted by the amount of time that the purifier takes to fill up.
So for example, when the RO was brand-new, it is to take about half an hours to fill up 8 L of water. This increased to 1 1/2 hours to almost 2 hours after about one year of usage. This automatically tells you that the reverse osmosis water purifier is throwing out much more water than it used to even though the membrane is nowhere close to the end of its life.
The membrane of the reverse osmosis water purifier is the most expensive replaceable and I just had it replaced in my water purifier even though it was nowhere close to the end of its effective life simply because it was wasting too much water.
I have measured the amount of water that gets wasted as I collect all the extra water to be used for other household purposes. My reverse osmosis water purifier discards at least 4 to 5 L of water and that's in summers and when the membrane is new and unclogged.
Most people do not know that a reverse osmosis water purifying system discards a lot more water the colder the water gets. So it's not surprising for the amount of discarded water to double in winters.
Another important observation that I have made is that even though the membrane life is 6000 L , there is degradation in its performance after the first 1500 L or so. It starts to discard a lot more water to filter each litre of clean water. This happens because all the filtered out TDS starts to clog the membrane pores.
After about 2000 L Of usage, the water wastage in my reverse osmosis water purifier multiplied by three times. Even if you are not collecting the discarded water, you can tell that the performance has degraded and more water is being wasted by the amount of time that the purifier takes to fill up.
So for example, when the RO was brand-new, it is to take about half an hours to fill up 8 L of water. This increased to 1 1/2 hours to almost 2 hours after about one year of usage. This automatically tells you that the reverse osmosis water purifier is throwing out much more water than it used to even though the membrane is nowhere close to the end of its life.
The membrane of the reverse osmosis water purifier is the most expensive replaceable and I just had it replaced in my water purifier even though it was nowhere close to the end of its effective life simply because it was wasting too much water.
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