This is NOT an official government website. We are an independent resource providing information and assistance to travelers.

Is it safe to use filtered water for brewing tea in Thailand?

Apr 15, 2025
21 days ago
Erik ***********
ORIGINAL POSTER
Absolutely not visa-related, this is and more: Am I being overly cautious when I brew my tea with filtered water? Normally Oolong tea which can take some heat so bring the water to approx 90C. Shouldn’t this kill all the buggers? Not to save money, I use a communal water-dispenser which gives 20 ltrs at 10 Baht. It’s to save my knees from the horror of toting the water. Tia
3,873
views
7
likes
77
all likes
31
replies
0
images
30
users
TLDR : Answer Summary
The discussion revolves around whether it is overly cautious to use filtered water for brewing tea in Thailand. Several comments emphasize the importance of the water quality, with some advocating for bottled water due to potential impurities in the tap water. Others suggest that boiling water, even if it's from the tap, can kill bacteria but won't remove chemicals or heavy metals. The conversation also touches on personal preferences and experiences, revealing that many expats choose bottled water for cooking and drinking.
Brett *****
Honestly who cares
Porky ******
I’m a Tea loving Brit who probably drinks a good 2-3 pints of Tea a day and I’ve always used bottled water, we get our 10ltr water from Sprinkle.

I have tried it with tap water boiled to 100c but it just makes the tea taste funny…

It’s probably added flavour of the dead parasites & whatnot 🤣
Braulio *********
Good Visa advice
Chuck **********
Don’t forget a hazmat suit!
Stephen **********
Boiling the tap water would probably kill the bacteria but won't remove the heavy metals.
Gregg ************
my only observation is that the Thai families I’ve seen in Isaan never use water out of the tap for anything other than washing things or watering plants. they always use bottled water for cooking and drinking. when in rome, and all that. maybe buy a small rolling cart from home pro to save your knees?
Lincoln *******
Boiling may kill bacteria but it won't kill the chemicals added to the tap water.
Phil ******
@Erik **********
kill what buggers ffs. Filtered water is fine. I drank from the tap all the time and I'm fine as my latest bloods are no worries
Tom *******
City water is for having a shower and flushing the loo

I’m in Nam Kliang and we have crystal clear water from the bore hole about 15 meters deep not a problem using it for tea or coffee

But prefer bottled water for drinking
Kenny *****
The tap water at least in bkk has so much impurities, i only use bottle water for consumption, cooking drinking etc...
Jeff *******
Does boiling remove the lead in the pipes?
Todd *******
What a load of crock how old are you
Paul *********
I went 9 months, using tap water in the kettle. Then the juristic cleaned the tanks and I got a proper clean out. Not I use bottles
Frank **********
Boiling will kill bacteria but there may be heavy metals and other chemicals in the water.
Donald ******
You have to wear gloves when pouring! Plus wear a mask in case.
Mark **********
Thailand has filtered and treated water the problem is that lead pipe are still present in some places and boiling will have very little effect on that.
Joseph ****
@Mark *********
This.

I am not familar with the city water of Bangkok, but in many a developing-world city the water supply has heavy metals and other toxins leaching into the ground or river source due to improperly disposed industrial water and waste upstream. Boiling does absolutely nothing to remove these toxins. And water softeners add sodium to your intake.

If somebody has recent research about the BKK water supply, would be much obliged. Oh, and the "I'm drinking it and I feel fine" comments are only helpful for short-term visitors. Anyone living here for years can be exposed to harmful buildup of metals in the water supply. It's doesn't slap you in the face right away.
Ho ******
Imagine... you can heat it to 100 and wait till it has 90 and then put it on the tea! 🙂
Adrian *******
@Ho *****
that is not how one makes tea . Almost American in its vileness!
Dany ********
i only use bottled mineral water for everything food/drink related… people here just dont know how terrible the water is longterm… all the cheap water you can buy is also filtered tap water with close to zero minerals.
Tore *********
@Dany *******
definitely should supplement with electrolytes
Adrian *******
Boiling (100C) will kill most . But 90C is not hot enough. Why not boil your water for 10 sec and then add to the tea? In general for making tea use freshly boiled, well oxygenated water (dont boil the crap our of it as it looses O2). Most prefer hard water too. Personally I dont use tap water for drinking in Thailand (have seen some very ill folk). BKK water can be quite salty too, especially in the wet season when sea water backflows under the city.
Paul *****
-Good videos on brewing tea:
**************************


.,.
Anna **********
I'm in uk right now and still use filtered water but that's just me. Do what you feel comfortable with
Graham ******
It depends where in Thailand you are. This would not be recommended out in the wilds somewhere but most "city water" should be ok for boiling
Mike *******
@Erik **********
It is recommended to boil water to a rolling boil for one minute.

When I lived in Bangkok I used bottled water instead of boiling it. I knew some Thais that would use bottled water for hot coffee or tea.

It’s a matter of personal preference and what you are comfortable with. Some people even in Western countries just use bottled water.
Steve *******
@Graham *****
I'd say it's the other way around
Graham ******
@Steve ******
I walk past the small reservoir that our mains water is pumped from ;)
Darren *******
Absolutely fine mate. Used boiled tap water daily for about 6 months and not had a problem once.
Charles **********
I never use bottled water for tea. Always from the tap. But that’s just me.
Julian ***********
Thai Visa Advice and Everything Else
... members · 60% approval rate
The Thai Visa Advice And Everything Else group allows for a broad range of discussions on life in Thailand, beyond just visa inquiries.
Join the Group
Thai Visa Advice and Everything Else
View the Conversation
Thai Visa Advice and Everything Else