Toxic Substances: FEMA declarations

Official FEMA records · Historical data · Last refreshed 5 Nov 2026, 18:35 UTC

FEMA has recorded 8 declarations with “Toxic Substances” as the primary incident type, from 10 Oct 1962 to 16 Jan 2016 . The most in one year was 2, in 1962.

Incident types are FEMA's own classification. See how FEMA declares disasters.These figures count FEMA declarations and designated areas. They do not measure damage, cost, deaths or how severe an event was.

Latest declarations

Latest 8 toxic substances declarations
Declaration State Incident type Declared ID
Contaminated Water (FEMA website) Michigan Toxic Substances 16 Jan 2016 EM-3375-MI
Water Contamination (FEMA website) Rhode Island Toxic Substances 16 Sep 1992 EM-3094-RI
Methane Gas Seepage (FEMA website) Wyoming Toxic Substances 4 Sep 1987 EM-3092-WY
Sewer Explosion, Toxic Waste (FEMA website) Kentucky Toxic Substances 17 Mar 1981 DR-636-KY
Chemical Waste, Love Canal (FEMA website) New York Toxic Substances 21 May 1980 EM-3080-NY
Chemical Waste, Love Canal (FEMA website) New York Toxic Substances 7 Aug 1978 EM-3066-NY
Chlorine Barge Accident (FEMA website) Louisiana Toxic Substances 5 Nov 1962 DR-139-LA
Chlorine Barge Accident (FEMA website) Mississippi Toxic Substances 10 Oct 1962 DR-135-MS

Explore all toxic substances declarations

Declarations per year

Toxic Substances declarations per year, 1962–2026

Measure: number of FEMA declarations with toxic substances as the primary incident type, by year declared. Source: FEMA OpenFEMA Disaster Declarations Summaries v2. 2026 is partial: it runs to the latest FEMA record.
Show the numbers as a table
Toxic Substances declarations per year, 1962–2026
Year Declarations
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0
2016 1
2015 0
2014 0
2013 0
2012 0
2011 0
2010 0
2009 0
2008 0
2007 0
2006 0
2005 0
2004 0
2003 0
2002 0
2001 0
2000 0
1999 0
1998 0
1997 0
1996 0
1995 0
1994 0
1993 0
1992 1
1991 0
1990 0
1989 0
1988 0
1987 1
1986 0
1985 0
1984 0
1983 0
1982 0
1981 1
1980 1
1979 0
1978 1
1977 0
1976 0
1975 0
1974 0
1973 0
1972 0
1971 0
1970 0
1969 0
1968 0
1967 0
1966 0
1965 0
1964 0
1963 0
1962 2

By decade

Toxic Substancesdeclarations by decade declared
Decade Declarations
1960s 2
1970s 1
1980s 3
1990s 1
2010s 1

States and territories with the most

Top states fortoxic substancesdeclarations
State or territory Declarations
New York 2
Michigan 1
Rhode Island 1
Wyoming 1
Kentucky 1
Louisiana 1
Mississippi 1