This project reviewed the drinking water management of other contraries and international organization and proposed some implement suggestions for physical standards and substances with potential health impact, which were regulated in Drinking Water Quality Standards of Taiwan. This project implemented contaminants screening process of drinking water quality regulation. Six unregulated perfluorinated compounds (PFCs) and seven pharmaceuticals personal care products were selected for evaluation. Their concentration was monitored in six representative drinking water treatment plants, and their health risk in drinking water system in Taiwan were evaluated. Monitoring results showed that among these 13 compounds only acetylsalicylic acid and diethyltoluamide (DEET) revealed higher occurrence and concentration in drinking water system in Taiwan. It was suggested to be monitored continuously. This project also collected the monitoring histories of unregulated contaminants in Preliminary Contaminant Candidate List and Contaminant Candidate List, and proposed unregulated contaminants monitoring suggestions. In addition, this project inspected 23 unregulated compounds of emerging concern in drinking water. There were 13 compounds with monitoring results all below detection or quantification limitation. The other compounds with detection values were at very low concentration level. Only few samples with higher per- and polyfluorinated chemicals (PFCs) and Boron concentration, therefore it is suggested to monitor them continuously. Water safety plan is proposed to manage Drinking water globally. This project also helped the implement of the water safety plan. Besides, this project evaluated five different microbial indicators at 20 sample points. It is suggested to identify the priority of the needs of different indicators, then evaluated suitable microorganism species for the indicators.

Pharmaceuticals Personal Care Products (PPCPs), Perfluorinated compounds (PFCs), microbial indicator