Greetings to my friend that you have participate in this engagement challenge of season 9 and week 2.I am happy that you know many things about water and you know really to appreciate a drop 💧 of water. Unfortunately there are many people who don't know the importance of water but it's happy to know from you the importance of a water drop and how you appreciate it in a beautiful way.

Yes I know that having metals like arsenic cadmium etc are present in water but it is not must that they are present in water sometimes they may be present and sometimes them in not be present but arsenic is a heavy metal that can cause club foot disease so presence of arsenic in the water is not health friendly.

Overall you participated very well in this engagement challenge and I wish you a lot of success in it