EPA maintains drinking water data in several
databases. It uses this information to help manage environmental
programs, and provides public access to the data through the Internet.
databases are maintained in other parts of EPA.
Safe Drinking Water Information System - Federal version (SDWIS/FED):
SDWIS/FED is EPA's national regulatory compliance database for the
drinking water program. It includes information on the nation's
170,000 public water systems and violations of drinking water
Safe Drinking Water Information System - State
SDWIS/State is a data system developed by the EPA for states that aids
in maintaining the quality of drinking water information.
maintained by the Regulatory Development and Compliance Program.
Please address any comments or questions
to the program or the