Assessing the microbial safety of drinking water

A drinking water company uses surface water for the production of drinking water. At the local treatment plant the following pathogens have been observed in the source water: enteroviruses (rotavirus), Campylobacter and Cryptosporidium.

The treatment plant uses conventional treatment (coagulation/sedimentation and rapid sand filtration), UV disinfection, GAC filtration and slow sand filtration operated under the Weesperkarspel conditions. With the Treatment Calculator the Pathogen Elimination Capacity of the treatment was calculated: