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Old 16-06-2017, 06:14 PM   #121
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[QUOTE=WussRedXLi;108659135]PS. Do note the health risks of drinking lots of demineralized water over a prolonged period esp with a mediocre diet......plus slightly increased leaching of micronutrients from food if such water is used when preparing/cooking food.

There are various contradicting reports on this. Some say there is no problem drinking water void of minerals as we get most of our minerals from meat, vegetables and fruits. The 8 cups per day water intake has also been debunked making it hard for us to get significant minerals just by drinking water.

The reason I want RO water filter is that it can filter our flouride which has known to cause cancer, brain damage etc. Especially for young kids. Fluoride is also very much present in toothpaste and if you read the warnings of some toothpaste at the back, it will usually say something like if you swallowed more than used for brushing, seek immediate help and keep out of reach of children. To me, fluoride is quite scary..
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Old 16-06-2017, 07:43 PM   #122
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thanks. Actually those reverse osmosis ones looks heavy duty but is affordable comparatively. It is also highly effective in terms of cleaning. I saw 2 members in this forum who had bought this, I think one from US and the other from China so was wondering does it work with Singapore low water pressure which is lower than most 1st world countries..

Sorta lah........ you are right that PUB's lower range is close to 20 PSI, it's a bit low for some flats. You might want to open your riser and see if you have a pressure gauge there?


For my HDB place, it's 30 PSI at just outside in my riser......




Some other pax is about 40 PSI (3 bar)
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Old 16-06-2017, 07:59 PM   #123
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There are various contradicting reports on this. Some say there is no problem drinking water void of minerals as we get most of our minerals from meat, vegetables and fruits. The 8 cups per day water intake has also been debunked making it hard for us to get significant minerals just by drinking water.

The reason I want RO water filter is that it can filter our flouride which has known to cause cancer, brain damage etc. Especially for young kids. Fluoride is also very much present in toothpaste and if you read the warnings of some toothpaste at the back, it will usually say something like if you swallowed more than used for brushing, seek immediate help and keep out of reach of children. To me, fluoride is quite scary..

You are not wrong to say that also, hence earlier on i did say it really depends on the end user's situation. But it is a WHO endorsed article, so i would have to say that there might have a degree of truth to it...that's why i shared that link just to present both sides of the coin.

If you are someone who really takes care of yourself and the family, there should be minimal impact.


Seriously if you are drinking the majority of ultra low TDS water during meals, ie for a working couple/schooling kids that'd be during breakfast and dinner.......then seriously the water is already going to be mixed with food in the stomach. It really makes no diff if the water TDS is 1ppm or 100ppm.


Anyway for my family, wife and kids all supplementarily eat sardines and walnuts (both superfoods) nearly daily....in fact no walnuts = daily. And a lot of other stuff from papaya/bananas mainly to other fruits, self cook eggs.......all to add to the hawker centre stuff. Luckily we have a good cai png store here which cooks pretty ok stuff, spinach, brocolli, bean sprouts long beans are good (ie not too unhealthy stuff).
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Old 16-06-2017, 08:31 PM   #124
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The reason I want RO water filter is that it can filter our flouride which has known to cause cancer, brain damage etc. Especially for young kids. Fluoride is also very much present in toothpaste and if you read the warnings of some toothpaste at the back, it will usually say something like if you swallowed more than used for brushing, seek immediate help and keep out of reach of children. To me, fluoride is quite scary..

Don't worry too much about fluoride. For young kids from age 0.7-6 yrs, just use a non-fluroridated toothpaste. I am a parent of 2 young kids (younger is 3, elder is 8), so i know how they do eat toothpastes.

We use this (we get from CK dept store in Chinatown, B1). It's $11, but i think redmark now got offer at $6, but need delivery fee or it's $50 delivery fee waived. Or you can get from iherb some fluoride toothpastes.



Eating toothpaste could be quite jialuck for them. Our water is 0.7ppm fluoride and toothpaste is 1450ppm. That's a factor of 2000X.
So eating just 1g of toothpaste (about pea size) = drinking 2 litres of water. Not a big deal even for a small kid, but do this repeatedly in addition to the daily water consumed. Not good.


Here's the data for our dental fluorsis for kids.

It's only an issue when the kids are ~ 1-6 years old when the main teeth are mineralising and in formation. I have very mild flourosis myself, so does my sister. But not a big aesthetical issue......and seriously from the electric toothbrush thread that i do frequent here in HWZ as well, i can deduce that some folks don't really heck care about their oral health/appearances too. So.......different strokes for different folks also?


https://www.ncbi.nlm.nih.gov/pubmed/8833510
.
Prevalence of dental fluorosis in children in Singapore.


Prevalence and severity of dental fluorosis was assessed in 1739 Singaporean children aged 9, 12 and 16 yr in three different ethnic groups. All subjects had resided since birth in Singapore, which has a tropical climate. The water supply was fluoridated in 1957 at a level of 0.7 ppm. In this sample, mouth prevalence was 82.6%, tooth prevalence was 66.9%, the community fluorosis index was at 1.96; 9.2% of children had severe fluorosis and 26.2% had moderate fluorosis. There were no significant gender or racial differences. Prevalences were higher than those reported in most other studies. Due to differences in indices used and methodology, comparisons could not be made directly with other studies.



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Old 16-06-2017, 08:59 PM   #125
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For tripleg, you can see the Xiaomi RO flowrate here. Fo note that this system does not need you to have any storage tank.

@ 6.30 min mark

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Old 16-06-2017, 11:13 PM   #126
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[QUOTE=WussRedXLi;108660857]Sorta lah........ you are right that PUB's lower range is close to 20 PSI, it's a bit low for some flats. You might want to open your riser and see if you have a pressure gauge there?


For my HDB place, it's 30 PSI at just outside in my riser......


Some other pax is about 40 PSI (3 bar)


oh cool! you have the gauge. Mine doesnt. But if the average is 30 psi, it is higher than I expected. Anyway the below image should be the psi for the gas. Gas pipe usually green colour.
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Old 16-06-2017, 11:22 PM   #127
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For tripleg, you can see the Xiaomi RO flowrate here. Fo note that this system does not need you to have any storage tank.

@ 6.30 min mark


yea I have heard of this, but seems to lack reviews with regards to their effectiveness for cleaning water. It looks good though and doesnt take up much space comparatively. Those big RO water filter under sink from US is highly effective and does not take up any counter top space. The waste water is also drained out to the pipe underneath. Xiao mi one waste water will flow out from a tube that is placed into the sink on top. The only thing preventing me from buying is that I am worried about the water pressure. I just realised Singapore water pressure is so low. Thas said, a non electrical pump can be attached to the filter that will increase the psi slightly perhaps to just above 40 psi.
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Old 16-06-2017, 11:25 PM   #128
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i using water ionizer system
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Old 16-06-2017, 11:25 PM   #129
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oh cool! you have the gauge. Mine doesnt. But if the average is 30 psi, it is higher than I expected. Anyway the below image should be the psi for the gas. Gas pipe usually green colour.
Oh, green is it gas? I thought it's yellow.

Anyway, it shd be water, i was just doing a google ba.
Here : http://www.mrplumber.sg/water-pressu...ber-singapore/




For the top image, that one is really in my riser just outside my unit, took the pressure gauge pic. 30 PSI is the true tap's open-flow pressure, ie i turn on my unit's tap and it's 30 PSI.
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Old 16-06-2017, 11:29 PM   #130
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Anyway tripleg, just FYI......this 10" filter cartridge on Amazon is Amazon free ship eligible. You can buy the 10" filter housings on Taobao or Amazon (TB is of course cheaper, but there are also slightly more expensive and higher quality housings, materials shd be safe......PP Polypropylene)

See if you are interested. Run another 1 micron sediment filter, can get from TB.....shiok liao. And won't run into low TDS "issue". Use the tap diverter that you can get from Taobao. 2 PE 1/4 inch 2分 hoses to run to the housing.

If you want ultrafiltration, can get UF cartridges from TB. Safe lah.....no worries.
1 micron sediment -> 0.01 microns UF -> Amazon KDF85/activated alumina/catalytic AC filter.

Will take care of lead as well.
Only "issue", it does not have NSF/WQA certification.

It is not the normal activated carbon, but catalytic activated carbon, so it's designed to be much more efficient for chloramines and also would last much longer.
ie the youtube video done by BRS/Bulk Reef Supplies on previous page, they tested one 0.6 micron normal AC solid carbon block and it lasted only ~ 150 gallons @ 0.25 gpm flowrate for chloramines (total chlorine). Remember, free chlorine = chlorine. Total chlorine includes chloramines, but usually at our tap end it means majority chloramines coz we don't have much chlorine left coz all reacted liao, not stable.


As you know, over at our tap end, we have very low levels of chlorine (coz already reacted with the organics in the pipes liao), but the chloramines are still up there.......coz it's designed that way to be much more stable.

The PUB water quality report states 3ppm monochloramine on avg.

https://www.amazon.com/gp/product/B0...=ATVPDKIKX0DER

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Old 16-06-2017, 11:31 PM   #131
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In terms of fluoride, I have read the articles below and there are others which concurs as well. But I understand most papers will say low level of fluoride is not harmful. The articles below do cite some studies as well.

www_infowars.com/5-facts-about-fluoride-you-urgently-need-to-know/

www_infowars.com/the-fluoride-wars-loving-cancer-loving-lower-iq/

Not enough posts to insert exact links. lol.
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Old 16-06-2017, 11:35 PM   #132
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I use 52" x 13" pressurized whole house filter filled with 100kg of Calgon catalytic carbon to remove toxic chems from water. Media needs to be replaced every 5-7 years.
Anyway, this guy is the real boss......
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Old 16-06-2017, 11:36 PM   #133
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Anyone use water filter system at home?
Those that install at the tap or in a water pitcher?

I use a water pitcher type filter for drinking.
I use both.

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Old 16-06-2017, 11:44 PM   #134
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In terms of fluoride, I have read the articles below and there are others which concurs as well. But I understand most papers will say low level of fluoride is not harmful. The articles below do cite some studies as well.

www_infowars.com/5-facts-about-fluoride-you-urgently-need-to-know/

www_infowars.com/the-fluoride-wars-loving-cancer-loving-lower-iq/

Not enough posts to insert exact links. lol.

I know infowars....actually they are a bit...well, "stirry", so i reserve my comments.

But thanks for sharing, will "bedtime" read later.
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Old 16-06-2017, 11:57 PM   #135
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[QUOTE=WussRedXLi;108664011]Anyway tripleg, just FYI......this 10" filter cartridge on Amazon is Amazon free ship eligible. You can buy the 10" filter housings on Taobao or Amazon (TB is of course cheaper, but there are also slightly more expensive and higher quality housings, materials shd be safe......PP Polypropylene)

See if you are interested. Run another 1 micron sediment filter, can get from TB.....shiok liao. And won't run into low TDS "issue". Use the tap diverter that you can get from Taobao. 2 PE 1/4 inch 2分 hoses to run to the housing.

If you want ultrafiltration, can get UF cartridges from TB. Safe lah.....no worries.
1 micron sediment -> 0.01 microns UF -> Amazon KDF85/activated alumina/catalytic AC filter.

Will take care of lead as well.
Only "issue", it does not have NSF/WQA certification.

It is not the normal activated carbon, but catalytic activated carbon, so it's designed to be much more efficient for chloramines and also would last much longer.
ie the youtube video done by BRS/Bulk Reef Supplies on previous page, they tested one 0.6 micron normal AC solid carbon block and it lasted only ~ 150 gallons @ 0.25 gpm flowrate for chloramines (total chlorine). Remember, free chlorine = chlorine. Total chlorine includes chloramines, but usually at our tap end it means majority chloramines coz we don't have much chlorine left coz all reacted liao, not stable.


As you know, over at our tap end, we have very low levels of chlorine (coz already reacted with the organics in the pipes liao), but the chloramines are still up there.......coz it's designed that way to be much more stable.

The PUB water quality report states 3ppm monochloramine on avg.


Yup this is considered a good and affordable product for its price, around 90USD for the filtration system which can house 1 cartridge. Compared to a normal RO with 5 cartridges, the effectiveness of cleaning the water (in terms of % and certain contaminants) is lesser which is understandable. If you get a not bad full RO water filter, it will cost around 200USD which I feel is worth it. It is under sink and waste water drained into water pipe directly. Again, it is the water pressure preventing me from doing it. Haha. If really cant, this is a pretty good option.
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