KMnO4 is used to oxidize organic matter deposited on the bottom, reduce algae density, and for the treatment of some diseases related to bacteria, parasites in gills and fungi on shrimp and fish.
KMnO4 can be used to disinfect water, remove some inorganic substances, and remove toxins in water used in agriculture.
In the textile dyeing industry, it is a popular chemical for bleaching textile fabrics. It is also used a lot in medicine and life applications. Diluted KMnO4 solution is used to disinfect, clean, wash wounds, vegetables (although being non-harmful to many types of worm eggs), decolorize starch, fat, and acts as a gas absorber.