These resources from Penn State Extension and University of Georgia (UGA) Extension offer guidelines for protecting your wellhead. Wellhead Protection_PSU Protecting Your Wellhead_UGA
These resources from the Pensylvania Department of Environmental Protection (DEP) and the University of Georgia (UGA) Extension offer guidelines and procedural steps for disinfecting a well (ground water), a process called shock chlorination. Disinfection of Home Wells and Springs_DEP