They don't bother anybody and if the State of Alabama can get this much right, they might even improve the drinking water for it's citizens.
The Alabama Cave Shrimp is a tiny creature that is nearly transparent and less than an inch long. It lives in flooded underground caverns and pools in caves, where it eats small bits of organic matter. The cave shrimp is found in just two cave systems in Madison County, Alabama, one of which is within the boundaries of the U.S. Army’s Redstone Arsenal. It was Federally-listed as an endangered species in 1988. The main threats to its survival are a low reproduction rate and groundwater contamination.
