Agreed, always best to be on the safe side and add a tap conditioner which will help get rid or detoxifies these harmful toxins and chlorines etc etc
There are many different brands of water conditioners out there on internet and at LFS's.
But by far, the most popular brand of conditioner used by many on this forum is Seachem Prime, these are, at first glance, more expensive but due to its concentration each water change uses very little Prime.
For example 100 litres only requires 2.5ml of Seachem Prime, whereas on another brand I used, Nutrafin Qua Plus used 25ml is needed for 100 litres of water, 10 times the difference! Which meant the bottle of Nutrafin water conditioner ran out far quicker than Prime, so in the long run, Prime is much cheaper to use and is proven to work very well providing you use the correct dosages.
Not actually trying to sound like a salesman or a rep for Seachem
Just giving out a recommendation....