History
| 1971 | July - Established Environment Agency |
|---|---|
| 1973 | March - Established Training institute for Environmental Pollution Control May -Started training at Environment Agency |
| 1974 | September - Completed oonstructing Training institute for Environmental Pollution Control in Tokorozawa city December - Started administration training |
| 1975 | January - Started laboratory analysis training |
| 1988 | May - Constructed facilities for advanced analysis training |
| 1990 | July - Changed name to National Environmental Training Institute |
| 1997 | October - Completed facilities for international training, etc. Started international environmental cooperation training |
| 1999 | November - Constructed facilities for dioxins anafysis training Started dioxin analysis training |
| 2001 | January - Estabilshed Ministry of the Environment November - Held the 1st China/Korea/Japan Tripartite Joint Environmental Training |
| 2002 | March - Constructed Annex to the Advanced Anafysis Building |
| 2003 | July - Changed name to National Environmental Research and Training Institute |
| 2004 | November - Held the 4th China/Korea/Japan Tripartite Joint Environmental Training |