The paper presents the application of potassium ferrate(VI) (K2FeO4) for the removal of selected pollutants from water and wastewater. The research results on the degradation of endocrine disrupting compounds (EDCs), decomposition of surfactants (SPCs), personal care products (PCPs), pharmaceuticals and their metabolites have been reviewed. Due to K2FeO4 strong oxidizing and coagulating properties, high stability, non-toxic by-products and non-selectivity it is sometimes called “environmentally friendly oxidant”. Due to this reasons K2FeO4 can be a multi-purpose water and wastewater treatment chemical and an alternative to advanced oxidation processes (AOPs).