Help in choosing water purifier (Drinking water)

[Mahesh Kumar]

Hi,

I am looking for a water purifier. Maybe not! I dont know.
You are all discussing a lot here about water and you might help me with this off topic!

I have uploaded my "water test" details. Please kindly suggest what is the best option for me
If i search, someone tells RO is very bad and it is acidic and others tell it is the only best way to drink water.

Can i use gravity based water purifiers?

 

[clsanchez77]

Everyone has their opinion on what is good water and what is bad water lol. But your water is already "acidic" lol at a pH of 6, which is no worse than RO water.

I'm not sure where you are located, but in America, there are plenty of people who drink RO water and live another day. A couple things stand out to me, first a TDS of 644 is high! Second is your turbidity is 1 NTU. I live in south Louisiana and we get our water from the Mississippi River and that is pretty dirty at a TDS of only 240 ppm. My third concern is chlorine is not listed (not the same as chloride). If you are not in the US, they may not chlorinate.

So for your filter, RO is your best choice. I don't know of any other way to get that TDS down. Because of turbidity, you will need a sediment pre-filter. They did noted no odor or color, but did not report organics or halides. If your area chlorinates, you will need carbon. If they do not chlorinate, carbon is up to you...I would do it. If water is expensive or a precious resource, you can double up the RO units so the second one filters the waste from the first unit. This cuts waste water in about half.

Some may recommend a water softener, as your water would be considered "Very Hard" by US standards and that will address Ca, Mg, alkalinity and total hardness...but not the TDS. So you can use one, but it will not replace the need for RO to address the TDS.

You do NOT want to use DI for drinking water for the concerns your friends noted.

To address RO water quality concerns, you can then wash the filtered water through "cleaned" crushed coral (or dolomite). They do this in Aruba and that island has one of the highest quality drinking water in the world. This will buffer the water, get that pH closer to 7 and it tastes great too!

There is no way to do this by gravity. You will likely need a booster pump.