EPA List of Drinking Water Contaminants and MCLs
http://www.epa.gov/ogwdw/mcl.html

US Environmental Protection Agency


This site contains listings of drinking water contaminants and the EPA regulatory limit for each contaminant. Tables include the national primary drinking water regulations, the national secondary drinking water regulations, and unregulated contaminants.


Subject: Geoscience:Hydrology:Ground Water:Water quality/chemistry
Resource Type: Datasets and Tools:Datasets
Topics: Hydrosphere/Cryosphere:Groundwater:Water quality/chemistry