Vitaliy
New Member
Hi Gary,
I do appreciate your knowledge and experience. I am here to learn
something new but I am also an engineer and I do trust instruments
and measurements. I took three samples of water and measured Ph
and TDS with the same instruments. There is definitely a Ph and TDS
(they are somewhat related to each other) reduction after each filter. My “whole house filter†is actually two stages filter – paper and carbon.
Yes, paper filter does not remove any dissolved particles (it actually
removes particles, bigger then 5 microns in size and this must have
some effect on TDS reading) but carbon filter does (this is carbon/kfc
combined cartridge).
You said, my RO system already contaminated.
Contaminated with what?
Are you talking about bacterial contamination because of a
“whole house filter†is in front of RO?
Before my current installation I had a single stage under sink carbon filter
for many years (of cause cartridge was replaced once a year) and I did
not notice any evidence of bacteria growth. As you mentioned yourself,
RO filtration system has carbon and sediment cartridges before the
membrane. So, if carbon cartridge can introduce a bacterial problem
(and yes, unfortunately sometime it does) then the same problem still will
be there but localized just to drinking water instead of spreading across
the entire plumbing system. Of course, this is not good and if it will happened
then I’ll add UV disinfector – much better then very toxic and poison chlorine
which must be removed (I did a lot of research) before water is actually
used. These days toxic and poison chlorine must not be used in a first
place for water treatment. Unfortunately all alternatives are more
expensive and required big $$$ investments but this is different story.
- Vitaliy
I do appreciate your knowledge and experience. I am here to learn
something new but I am also an engineer and I do trust instruments
and measurements. I took three samples of water and measured Ph
and TDS with the same instruments. There is definitely a Ph and TDS
(they are somewhat related to each other) reduction after each filter. My “whole house filter†is actually two stages filter – paper and carbon.
Yes, paper filter does not remove any dissolved particles (it actually
removes particles, bigger then 5 microns in size and this must have
some effect on TDS reading) but carbon filter does (this is carbon/kfc
combined cartridge).
You said, my RO system already contaminated.
Contaminated with what?
Are you talking about bacterial contamination because of a
“whole house filter†is in front of RO?
Before my current installation I had a single stage under sink carbon filter
for many years (of cause cartridge was replaced once a year) and I did
not notice any evidence of bacteria growth. As you mentioned yourself,
RO filtration system has carbon and sediment cartridges before the
membrane. So, if carbon cartridge can introduce a bacterial problem
(and yes, unfortunately sometime it does) then the same problem still will
be there but localized just to drinking water instead of spreading across
the entire plumbing system. Of course, this is not good and if it will happened
then I’ll add UV disinfector – much better then very toxic and poison chlorine
which must be removed (I did a lot of research) before water is actually
used. These days toxic and poison chlorine must not be used in a first
place for water treatment. Unfortunately all alternatives are more
expensive and required big $$$ investments but this is different story.
- Vitaliy