Zoom in and click on counties/markers to interact with the map.
'Erin Brockovich' Chemical Taints Tap Water of 218 Million Americans

Share this page

Map Info

On the map, click on counties/markers for more information.

Average level of Chromium-6 Contamination in Community Water Utilities testing for Chromium-6 in EPA's UCMR-3
  • Not Tested
  • <= 0.02 ppb
  • >0.02 - 1.00 ppb
  • >1.01 - 5.0 ppb
  • >5.01 - 10.0 ppb
  • >10 ppb
Population Served
  • Over 100,000
  • 50,001 - 100,000
  • 25,000 - 50,000
  • 15,000 - 25,000
  • Under 15,000
Source: Environmental Protection Agency, UCMR-3. Data downloaded from https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule on July 27,2016
Lower 48 Alaska Hawaii

Search by Zip Code

Please type below a 5-digit Zip Code, then click on "SEARCH"