I have been trying to tell my housemates not to take in bottled water, but he is just not listening. Not only it is not the best for health, it is creating much unnecessary garbage for the earth as well.

I have never heard of TDS before. There's not much awareness for it in Malaysia.

You have a lot of followers, I think it will be time to check out Spectacles to see if you have any dead followers that you need to clean up, and concentrate on your loyal followers and support them instead of worrying your posts are not getting upvoted ya.
Because, genuine connection will land you way much more earnings per post than expecting a "vote-for-vote, follow-for-follow" tactic.

Your post is good enough for an upvote and resteem

Keep calm and steem on.