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SEMS Search User Guide

Envirofacts Home | SunWise UV Index Mobile App | Topic Searches  | Data Downloads | SDWIS Search | TRI Search | Other System Searches | Multisystem Search | About the Data |  Widgets | Web Services | Other Datasets

SEMS is the official repository for site and non-site specific Superfund data in support of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). It contains information on hazardous waste site assessment and remediation from 1983 to the present.

This page is a brief user guide to the SEMS Search. Use one or more search options to narrow results. Only sites matching all selected criteria will be returned.

On this page: Facility identification · Geography · NPL sites only · Contaminant · Search results · Detail view

Facility Identification Search Option

From the Facility Identification dropdown list, choose Facility Name or SEMS EPA ID.

Facility Name

Enter a complete or partial facility name.

  • Beginning With returns results where the name starts with your value.
  • Exact Match returns only results that exactly match what you entered.
  • Containing can be useful when entering partial names.

SEMS EPA ID

Enter a complete or partial SEMS EPA ID.

  • Beginning With returns results where the ID starts with your value.
  • Exact Match returns only results that exactly match what you entered.
  • Containing can be useful when entering partial IDs.

Geography Search Option

Select from the following geography fields: ZIP Code, Address, City, County, and State.

ZIP Code

Enter one or more digits.

Address

Enter a complete or partial street address.

  • Beginning With returns results where the address starts with your value.
  • Exact Match returns only results that exactly match what you entered.
  • Containing can be useful when entering partial addresses.

City

Enter a complete or partial city name. State is required when using City.

County

Enter a complete or partial county name. State is required when using County.

State

Select a state from the dropdown list.

Note: Envirofacts contains a large number of facilities. Starting with a small geographic area is strongly recommended.

National Priority List (NPL) Sites Only

Select this option to retrieve only sites that are proposed, currently, or previously on the NPL.

Contaminant Search

Select a contaminant from the dropdown list to locate sites associated with that contaminant.

SEMS Search Results

Search results provide basic facility information for sites that match your criteria. Use the links in the results to open additional reports when available.

Basic facility information

  • SEMS EPA ID – Use the SEMS EPA ID link to view facility information in the SEMS Detail View.
  • Facility information – Use the “View Facility Information” link to view EPA facility information for the site.
  • Site name
  • Address – The facility address is a combination of:
    • Street
    • City
    • State
    • ZIP code
  • County
  • Federal facility
  • NPL status
  • Non-NPL status
  • Latitude/longitude
  • Contaminants

SEMS Detail View

The SEMS Detail View organizes information by topic, including site information and contaminants.

Site information

  • Site name
  • Site ID
  • EPA ID
  • Site address information
    • Street address
    • City
    • State
    • ZIP code
    • District code
    • County code
    • Latitude
    • Longitude
    • FIPS code
    • Region code
  • Additional information
    • Federal facility
    • SAA agreement
    • NPL
      • Status code
      • Status name
    • Non-NPL
      • Status code
      • Status name
      • Date
    • Archived

Contaminants

  • Operable unit number
  • Action name
  • Type code
  • SEQ
  • Media name
  • Preferred name

SEMS Links

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System Data Searches

Envirofacts

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Map of Cleanups in My Community

ECHO

SRS Search

Other Sites of Interest

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Envirofacts

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  • TRI Search
Contact Us About Envirofacts
Contact Us About Envirofacts to ask a question, provide feedback, or report a problem.
Last updated on December 29, 2025
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