A Point Source of contaminants is a single identifiable localized source of pollution.
All point sources that have the potential to contaminate a water supply are identified in a preliminary database search, and mapped in Zones I, II, and III (or A, B, C) for the water system. Potential Point Sources of contaminants include:
- Agricultural Operations
- Waste Water Treatment Plant discharge sites
- Auto Repair Shops
- Medical facilities
- Resource Conservation and Recovery Act (RCRA) locations
- Construction company sites
- Nonpoint Discharge Elimination (NPDES) locations
- Golf Courses and other large grassy areas, such as business, school and university campuses
- Underground Storage Tanks (USTs)
Once identified, all potential Point Sources of contaminants are ranked by the level of risk they pose to the water supply: A (Highest Risk) through F (Lowest Risk).