While I'd say normally it would work fine as is, for packs with themes like post apocalyptic settings or the like I feel being able to pick up glowing green water without purifying it is a little sketchy. This isn't your fault though.

What I wanted to ask was if it is possible to add a config setting that makes players need to drink purified water for any effect.

And if it isn't to much work, a secondary config option that has a chance to give the player a status effect like hunger or something if you drink a normal water bottle.

Why was this closed?

Because the mod has been completely rewritten and mostly existing issues are likely irrelevant at this point. Also, this is a nearly 3 year old issue, and I'm not gonna cherry pick what may or may not be relevant still.