It will extensively sorb to sediment. Evaporation from water will not be significant. Fate of endrin in the atmosphere is unknown, but it probably will be primarily associated with particulate matter and be removed mainly by rainout and dry deposition. There is significant bioconcentration of endrin in fish, with BCFs of 1335-10,000 reported. Monitoring data demonstrates that endrin continues to be a contaminant in air, water, sediment, soil, fish, and other aquatic organisms.
Human exposure appears to come mostly from food or occupational exposure.