Does Singapore check the water from Malaysia before distributing to our homes?

Question

Is the checking 24 hours everyday or per day? if someone puts poison or other things inside, can Singapore detect it and clean it or do they stop all water processing?

Answer 1

if you have so much hydrophobia,don't drink it lah

Answer 2

It would do more good to have an ozonator in each cluster of homes, to ensure that the  water is still safe to drink.

Water can be ok, then after running through delivery pipes it can have pulled in dirty water. Hence wisdom of ozonator right close to point of consumption.