Dallas Mavericks star JaVale McGee has a personal interest in the water crisis in Flint, MI -- since he's from there -- and tells TMZ Sports the residents need more than just bottles of water.
There's a been a huge push from big stars like Diddy, Mark Wahlberg and the Detroit Lions to send bottles to the areas affected by the contamination ... but McGee says it's not enough.
"There's a bigger problem than water bottles," McGee said outside of Herringbone in Santa Monica.
"Water bottles are just to drink but what about showers and filters and things of that nature?"
"It's messed up out there."