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Pearl Jam and Meek Mill are the latest music stars who have put their money where their mouths are in an effort to solve the lead-tainted water pollution debacle going on in Flint, Michigan. Cher and Big Sean have already gotten involved.

Pearl Jam and some of their friends have banded together today (Jan. 22) to pledge $300,000 to help, via a Crowdrise campaign that benefits the United Way of Genesee County’s Flint Water Fund. The group has announced that every fan donation up to that $300,000 will be matched.

After Big Sean also started a Crowdrise campaign called #HealFlintKids that benefits the Flint Child and Family Health Development Fund earlier this week, Meek Mill added an undisclosed amount of money to the cause, according to TMZ. He also sent 60,000 bottles of water to the Food Bank of Eastern Michigan. Big Sean's campaign has already garnered over $15,000 in fan donations, and he's offering donators the chance to meet him on his unannounced fall tour.

Cher was also quick to help. She worked with Icelandic Glacial to donate almost 200,000 bottles of water to Flint residents, also through the Food Bank of Eastern Michigan. And of course, President Obama hasn’t slept on the crisis either. He just reportedly upped Flint water aid from $5 million to $80 million.