The US does mandate this.
https://www.epa.gov/dwreginfo/drinking-water-regulations
And the EPA started taking action in Jackson more than a year ago: https://www.epa.gov/ms/jackson-ms-drinking-water
The problem is that local leaders have the ability to just suck at their job and not make smart long term decisions. And often, this is caused by local opinions about spending priorities and opinions on the role of government.
The US does mandate this.
https://www.epa.gov/dwreginfo/drinking-water-regulations
And the EPA started taking action in Jackson more than a year ago: https://www.epa.gov/ms/jackson-ms-drinking-water
The problem is that local leaders have the ability to just suck at their job and not make smart long term decisions. And often, this is caused by local opinions about spending priorities and opinions on the role of government.