7人被问责！杭州通报“余杭自来水异味”调查情况

Core Viewpoint - The investigation into the water supply issues in Yuhang District, Hangzhou, revealed that the abnormal odor in the water was caused by the presence of sulfur compounds due to environmental factors, including high temperatures and algal blooms [1][17]. Water Quality Abnormality Investigation - The joint investigation team found that the detected sulfur compounds can produce unpleasant odors even at low concentrations, and the issue was exacerbated by climatic conditions and water dynamics [1]. - The water supply system primarily uses iron pipes, which led to the appearance of "yellow" or "murky" water due to rust dislodging during the flushing of pipes [2]. Emergency Response - The emergency response began promptly after the detection of the odor, with water source switching and pipe flushing initiated to address the issue [3][4][5]. - By July 17, the water supply was largely restored, and the affected areas underwent thorough cleaning of water tanks and pipelines [11][20]. Water Quality Testing - Water quality tests conducted on July 16 indicated that while the odor and taste were abnormal, no harmful bacteria were detected, and subsequent tests confirmed that water quality returned to normal [14][15]. - The local health department conducted extensive testing, confirming compliance with national drinking water standards [15]. Accountability and Issues Identified - The investigation highlighted several shortcomings in the emergency response, including delays in communication and failure to follow emergency protocols [16][17]. - A total of seven officials were held accountable for their roles in the incident, with various disciplinary actions taken against them [18][19]. Community Support and Assurance - In response to public concerns, local authorities implemented measures such as free water filter replacements and waived water fees for affected residents [20]. - The government expressed its commitment to improving water safety measures and emergency response capabilities to prevent future incidents [20].