Group 1 - The article highlights the increasing water demand across various regions in China due to persistent high temperatures, prompting local authorities to implement measures to ensure water supply safety [1][4][5] - In Tianjin, the highest daily water supply reached 2.17 million cubic meters, a 15% increase compared to the average of 1.9 million cubic meters in other seasons [4] - Beijing's average daily water supply since June has been 298,300 cubic meters, with 32 water plants having a combined supply capacity of 4.9 million cubic meters to meet peak demand [5] Group 2 - Zhengzhou's daily water supply is around 1.95 million cubic meters, with efforts made to manage water sources from the South-to-North Water Diversion Project and Yellow River reserves [7] - The water quality monitoring has been intensified, with nearly 1,500 water samples tested covering over 70,000 indicators to ensure 100% compliance with urban water quality standards by 2025 [8] - In Shandong, water plants have increased operational capacity to meet rising demand, with Jinan's water supply increasing by 50,000 tons daily by adjusting the number of operational units from 2 to 4 [12][14] Group 3 - Jinan's water supply primarily relies on Yellow River and local surface water, with the daily water usage in Dezhou rising from 370,000 cubic meters to 480,000 cubic meters [17] - The Dingdong Reservoir in Dezhou, with a total capacity of 52.6 million cubic meters, currently holds 47 million cubic meters, sufficient for 100 days of urban water needs [20]