We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Water Contaminant Information Tool (WCIT)

The Water Contaminant Information Tool provides information about chemical, biological and radiological contaminants of concern for water security.

The Water Contaminant Information Tool (WCIT) is used by the water sector to prepare for, respond to or recover from drinking water and wastewater contamination incidents. WCIT includes comprehensive information about contaminants that could be introduced into a water system following a natural disaster, vandalism, accident or act or terrorism. There are currently over 800 priority contaminants of concern listed in WCIT.

Access to this password-protected tool will be granted to select personnel from:

  • Drinking water and wastewater utilities.
  • Laboratories.
  • State and federal emergency responders.
  • State primacy agencies.
  • Public health agencies.
  • Water associations.

To apply for access to the WCIT database, visit Central Data Exchange website.

You may need additional software to view some of the links on this page. See EPA’s Free Viewers and Readers page.