Cryptosporidium outbreaks in recreational water venues have threatened public health， espely in swimming pools. There is still no reliable treatment technique to remove Cryptosporidium oocysts from swimming pools. The performance of six coagulants and granular materials on Cryptosporidium removal from pools was evaluated. Seeding methods of coagulants and their dosage versus oocysts concentrations were tested. Results indicated oocysts removal efficiency for feeding oocysts and coagulant s