Appendices A, B and C list the address and phone number for these organizations. The second step in protecting drinking water through the Wellhead Protection Program is an inventory of potential contaminants. The key word is potential . These sites and activities are not necessarily polluting the environment now, but could contaminate ground water in the future. A contaminant source inventory is the recording and description of potential contaminant sources or activities in a WHPA. .
Point sources have an identifiable origin point from which the contaminant originates.
Examples include leaking underground storage tanks, abandoned wells, chemical storage facilities, spills and asphalt mounds at road maintenance yards. Nonpoint source contamination has no origin point from which the pollution spreads. An activity or source that could contaminate ground water. The two types of potential contaminant sources are Point and Nonpoint. Many communities may question why they should conduct a contaminant source inventory.