# Istanbul water supply and management issues > Live situation record from CLSTR: https://clstr.news/situations/istanbul-water-supply-and-management-issues > Updated: 2026-10-26T20:08:00.000Z. Sources: 3. Developments: 2. In mid-October, the Istanbul water administration, İSKİ, denied social media allegations claiming that sewage had contaminated the city’s drinking water. İSKİ stated that the quality of the 3.2 million cubic meters of water provided daily is monitored 24/7 and undergoes regular independent audits by the Istanbul Provincial Health Directorate to ensure compliance with Ministry of Health regulations. By late October, focus shifted to environmental and industrial concerns regarding the city’s water sources. The Chamber of Environmental Engineers raised objections to a proposed Biotechnology Organized Industrial Zone in the Ömerli water basin, arguing that the production of antibiotics and hormones in the area threatens a basin that provides roughly 50 percent of Istanbul’s drinking water. Courts have issued stay of execution and annulment decisions regarding this project. Concurrently, Istanbul Airport announced plans to become independent of the municipal water network by the second half of 2027. The airport intends to use a new reverse osmosis plant to supplement its biological treatment facility, aiming to meet all water needs through recycling. ## Timeline ### 2026-10-26: Istanbul water management: Industrial disputes and sustainability efforts Istanbul faces conflicting water narratives: legal challenges against a biotechnology industrial zone in the Ömerli drinking water basin, while Istanbul Airport aims for total water self-sufficiency by 2027. 3 sources. https://clstr.news/cluster/istanbul-water-management-industrial-disputes-and-sustainability-efforts ### 2026-10-17: İSKİ denies claims of sewage contamination in Istanbul water İSKİ has denied social media claims that sewage has contaminated Istanbul's drinking water, asserting that continuous monitoring and independent audits ensure all water meets safety standards. 8 sources. https://clstr.news/cluster/iski-denies-claims-of-sewage-contamination-in-istanbul-water --- Cite as: Istanbul water supply and management issues. CLSTR, https://clstr.news/situations/istanbul-water-supply-and-management-issues