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.

EPA's website will operate in a diminished capacity on Saturday Feb 17, 2018 from 8:00 a.m. to noon EST for routine maintenance. Some services, such as search, may be temporarily unavailable for brief periods during this time. We apologize for any inconvenience.

Drinking Water Tools

The Drinking Water tools assist with analyzing drinking water data.

Safe Drinking Water Information System (SDWIS)

SDWIS provides information about the quality of drinking water. Read more about SDWIS.

Water Contaminant Information Tool (WCIT)

WCIT contains information on chemical, biological, and radiological contaminants that may potentially pose a threat to drinking water. Read more about WCIT.

Water Utility Response On The Go

Water Utility Response On The Go is a mobile tool that allows water utilities to respond to emergency incidents. Read more about Response OTG.