Back in time most people used to drink underground water, or taps.



Then they installed RO.



Problem with RO is that in its default state it produces Low TDS water as low as 8-15 ppm (it's usually  lower than 50ppm) (recorded on TDS meter which are abundantly available)



This is very pure water, it's slightly acidic with ph lower than 7 (around 5.5 to 6.5)



Pure water is ion hungry it can corrode metal pipes, and it might give you mild irritation of digestive track or stomach.



Now the RO companies use a clever and dirty hack to make this Water higher ph. So that when you actually check the TDS of water in the tank it's much higher at 150-300ppm.



But how did the TDS increase from output of membrane where it was 8-15 to 150-300ppm? That's where the dirty shaddy hack comes in.



Basically if you open the RO unit. You'll find a TDS adjuster value which basically injects the unfiltered water (partially filtered but RO membrane reject) back into Pure water output of the RO membrane.



By mixing dirty water (which might have heavy metal, microbes and microplastics), they'd add it to pure water in small quanity to make water have higher PH.



Guess what? It entirely defeats the purpose of using RO.



So what should we actually do? We should remove the TDS adjuster and actually add calcium, magnesium, potassium in water back not by adding dirty water to fix this shortcoming of RO.



What can people do is they can find Dolomite stones, limestones and put that in their Ultra Pure Water RO tank.



As the pure water is reactive and ion hungry, it will leach the Magnesium and calcium from these stones back into water. When this raises PH of water, the dissolution will stop.



This was done in ancient civilization of Rome and Greek where aqueducts were made of Limestones. They also used dolomite stone to enrich their water.



Maifan stone is similarly used in Japan and Korea for water enrichment.



In aztec and maya civilization they used limestone in their water channels to enrich their water.









Most Indians are consuming Unknowingly Contaminated Water from RO units