Is the Water from Our Taps Safe To Drink ?

Direct Answer : Tap Water from PUB mains is safe to drink.

We have been doing it since even before we were born.

But have you heard that there is "Pure" Water out there?

"Pure" Water consists of very clean water that is meant for scientific labs, medical or industrial uses. Hence the water must be filtered further for those applications.
There is a deeper science to the water and its quality but for your better understanding here, I shall relate and share to the best of my knowledge on what I know.

Here is the info from PUB our water supply quality :

http://www.pub.gov.sg/general/watersupply/Pages/DrinkingWQReport.aspx

From here, under physical parameters the Total Dissolved Solids ( TDS ) allowed is 133mg/L or ppm. By the way what is TDS when you are suppose to know the pH level of water? TDS is used as an indicator of the presence of a broad array of chemical contaminants in the water. pH is used to separate acidic and alkaline properties of the chemicals dissolved or in liquid format in the water. Hence when you use the TDS meter, it is to allow the potential client that the water quality from the tap and boiled water has TDS values and is just not good enough for detoxing ( Note : Never say the water from the tap/boiled is bad water or you will have worrying questions that you can’t answer ).

As for the Chemical properties, PUB water ALLOWED 104 trace chemicals parameters in the water so that’s why its not totally filtered.

Then you ask why is this allowed? The answer is simply that the general filters that PUB uses in their water works are not able to filter to that level. Furthermore, as long as it complies or better over to WHO set standards for water quality, the water is safe and one of the best to drink straight from the tap. 

So is tap water safe to drink? Yes it is. But there is a hidden secret that nobody tells you ( because I they don't even know about it !!! )

We are drinking heavy metals ( Copper or Steel )  that is deposited from the supply piping which you and me can't do anything to prevent that from happening. 

Then you say, can we filter out these heavy metals from the system to have proper water to drink? 

Yes I say : - That is covered in another of my posting....