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.
Other water-related 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 regulations.
Unregulated Contaminant Monitoring Rule (UCMR): EPA uses
data generated by the UCMR to evaluate and prioritize contaminants
on the Drinking Water Contaminant Candidate List, a list of
contaminants EPA is considering for possible new drinking water
standards.
National
Contaminant Occurrence Database (NCOD) was developed
to satisfy the statutory requirements set by Congress
in the 1996 Safe Drinking
Water Act (SDWA) amendments. The purpose of the database is to
support the U.S. Environmental Protection Agency's (EPA)
decisions
related to identifying contaminants for regulation and subsequent
regulation development. The NCOD contains occurrence
data from
both Public Water Systems (PWSs) and other sources (like the
U.S. Geological Survey National Water Information System)
on physical,
chemical, microbial and radiological contaminants for both detections
and non-detects.
Information Collection Rule (ICR) Federal Database:The
ICR database includes research data from an 18-month study of
disinfection byproducts and microbial contaminants.
Safe Drinking Water Information System - State
Version(SDWIS/State):
SDWIS/State is a data system that EPA is developing for states that
will improve the quality of drinking water information.
Watershed Information Network: WIN helps people
learn about the watershed in which they live.
Index of Watershed Indicators (IWI): IWI is
a compilation of information on the "health" of aquatic resources
including all watersheds in the lower 48 states.
Reports: Periodically, EPA analyzes and reports
on occurrence of certain contaminants in sources of drinking water
If you can't find the information you need through the sources above,
you may also consider filing a Freedom of Information Act
(FOIA) request for drinking water data.
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