Figure 1: Location of the Edwards Aquifer in relation to the Balcones fault zone and other physiographic features. Note how the aquifer cuts across the surface drainage basins. Figure 3: Topography and rainfall of the central segment of the Edwards Aquifer (modified from Woodruff and Abbott, 1979).he dominant geologic feature in the region is the Balcones fault zone, a system of en echelon, mainly down-to-the-coast, normal faults that extend about 545 km from Del Rio on the Mexican border to near Waco in north-central Texas.
CRE are bacteria that are resistant to most antibiotics due to the production of an enzyme called carbapenemase. Enterobacteriaceae is a family of bacteria and many of these bacteria live in our environment (such as soil or water).Some of them can get into our bodies and cause pneumonia, kidney and bladder infections, and bloodstream infections.nterobacteriaceae is a family of bacteria and many of these bacteria live in our environment (such as soil or water). Some of them can get into our bodies and cause pneumonia, kidney and bladder infections, and bloodstream infections.
CRE (carbapenem-resistant Enterobacteriaceae) bacteria are members of related bacterial genera that are commonly found almost everywhere in the world, often colonizing humans and animals (living in or on humans and animals mucosal surfaces, gastrointestinal tracts, and on some areas on the skin).owever, CRE possess a unique genetic makeup that allows the bacteria to make an enzyme that protect CRE bacteria from a powerful antibiotic: carbapenem. The most notable genera that can share and even transfer this genetic trait to other members of the Enterobacteriaceae are E. coli and Klebsiella pneumoniae.