Every U.S. States Ranked by Best to Worst Drinking Water

Maryland’s ranking reflects moderate population exposure to unsafe drinking water. While many residents receive water that meets federal standards, violations still affect a noticeable portion of the population compared to higher-ranked states.

Density plays a role here. Large, complex water systems serve millions of people, which raises the stakes when issues arise. Strong testing helps contain problems, but aging infrastructure keeps Maryland from ranking higher overall.