Backstory: I've had a massive pothole outside my house and it's been there for over three months. I'd be willing to help pitch in to fix it as I've been tired of avoiding it every day when driving to work.
The Idea: A way for residents to contribute to community issues.
Deep Dive: You would build a platform for residents to commit money to improve community problems. You would have to either source the work or work with the state to improve the issue.
Validation: There are a ton of local charities that improve the overall wellness of the community.
Monetization: You may have to go after this from a non-profit standpoint and only make enough to support the infrastructure and your own salary.