IMO, water goes "bad" after awhile. Certainly loses its fresh attributes. That's all I meant by punk water. And depending on where you've filled up, it can get stinky. We got a bad case of that from some water from a campground near Leech Lake MN. We couldn't believe how bad the water smelled after being in the trailer for 30 days. Had to flush the whole system and bleach it.
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs