18 Loads. Cleans Great! New Fresh Scent. Phosphorus Trace Amount: This Wisk formula was made without phosphorus. However, due to the manufacturing equipment, some packages may contain traces of phosphorus. This package contains 18 loads when measured by weight. The precise number of loads from each package will vary somewhat with the size of wash load, method of measurement and the settling during shipment. The Surfactants and Enzymes in Wisk are biodegradable. Safe for septic tanks.