aquifer

Conservationists in Missouri say a rare cave system is directly connected to the drinking water many residents rely on. A newly protected habitat in Perryville is the only home of the endangered grotto sculpin, (GRAHTTO skull pen), a tiny fish that signals whether the underground water supply is healthy.

Earlier this year, Des Moines, Iowa, made news when the city announced it would sue farmers in a legal battle over fertilizer. The city’s water supply…