Waters used as sources of water supply for drinking, culinary, or food processing purposes for those users desiring maximum protection for their water supplies. WS-I waters are those within essentially natural and undeveloped watersheds with no permitted point source (wastewater) discharges.
WS-I watersheds are entirely composed of publicly owned land and comprise just 0.2% of the total state land area.
Link to Summary Table of Water Supply Watershed Classifications
Link to Frequently Asked Questions (FAQs)
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http://h2o.enr.state.nc.us/wswp/WS-1.html (Last Updated:
August 1, 1999) Webmaster