Groundwater Quality Risk Assessment Framework

Aquifer Susceptibility Map

• Represents the natural susceptibility of near surface geological materials.
• Includes Conduits representing wells that may increases the natural susceptibility of the aquifer if poorly constructed
• Ratings are scaled (1-10)

Hazard Threat of Pathogens

• Based on Land Use Type - includes septic sources and farmland
• Ratings are scaled (1-10)

Vulnerability Map

• Includes both Susceptibility and Hazard Potential
• Ratings are scaled (1-10)

Total Loss Map

• Considers cost to the public health care system if people get sick from gastrointestinal illness
• Ratings are scaled (1-10)

Final Risk Map

• A product of Vulnerability and Loss
• Ratings are scaled (1-10)