The National Oceanic and Atmospheric Administration (NOAA) stated that El Niño is strengthening and there is a probability greater than 90% that it will reach very strong intensity during the fall and winter of 2026-2027. ^[1] Governor Pablo Lemus announced on Thursday that the National Water Commission (Conagua) has approved collaboration on infrastructure projects for the Guadalajara Metropolitan Zone (ZMG). ^[2] The Cutzamala reservoir system, Mexico City's primary water source, reached 81% capacity in August, marking the highest volume in a decade. ^[3] The Mexican Ministry of Health reported that 13 people died from extreme heat during the week of August 27 to September 2, 2026. ^[4] Katia Reséndiz, president of the Consultative Water Council, stated on 2026-04-12 that the state of Querétaro does not have a water secretariat despite having one of the best water supply systems. ^[5] Researchers and students from the Universidad de Sonora (Unison) are analyzing the microbiological and viral quality of water used for human consumption in four Yaqui communities in Sonora, Mexico: Dique 8, Loma de Guamúchil, Vícam, and Pótam. ^[6] The Autonomous University of Mexico (UNAM) warned about increased cyclonic activity in the Pacific associated with El Niño. ^[7] The Servicio Meteorológico Nacional (SMN) forecasted between 18 and 21 tropical cyclones in the Pacific for the 2026 season, of which 9 to 11 could reach hurricane force and 4 to 5 could become major hurricanes. ^[8] The approved collaboration involves specific infrastructure projects designed to address water management needs within the ZMG. ^[9] The National Water Commission (Conagua) reported that the system has experienced 13 consecutive weeks of recovery dating to the beginning of the rainy season on June 4. ^[10] The Villa Victoria reservoir, which was about 30% full three years ago, is now over 78% full, holding more than 145 million cubic meters of water. ^[11] Between July 30 and September 2, 2026, a total of 56 people died from extreme heat across Mexico, while 654 survived. ^[12]