In the tables below, metals are grouped by the federal or state standard that was referenced in the Well Empowered study results. The reference standard is listed next to the name of the individual metal in parts-per-billion. Contaminant fact sheets are listed where available from NC DHHS or ATSDR.

US EPA MAXIMUM CONTAMINANT AND ACTION LEVELS

US EPA HEALTH ADVISORY LEVEL

Sodium (20,000 ppb)

NC DEQ GROUNDWATER STANDARDS

Aluminum (3,500 ppb)
Barium (700 ppb)
Cadmium ( 2 ppb)
Chromium (10 ppb)
Cobalt (1 ppb)
Copper (1,000 ppb)
Iron (2,500 ppb)
Manganese (300 ppb)
Nickel (100 ppb)
Selenium (20 ppb)
Strontium (2,000 ppb)
Vanadium (7 ppb)
Zinc (1,000 ppb)
CONTACT INFORMATION
Director: Rebecca Fry, PhD
Deputy Director: Fernando Pardo-Manuel de Villena, PhD
Funding provided by NIEHS grant #P42 ES031007

135 Dauer Drive
253 Rosenau Hall, CB #7431
Chapel Hill, NC, 27599-7431