Balıkesir Su ve Kanalizasyon İdaresi (BASKİ) is the primary authority responsible for water and wastewater management in Balıkesir, Turkey. Operating under the auspices of the Ministry of Interior, BASKİ ensures the efficient delivery of water services while adhering to legal provisions regarding personal data protection. The organization is dedicated to enhancing water quality, reducing water loss, and improving infrastructure through ongoing investments in water treatment and sewage systems.

BASKİ offers a range of services, including subscription management, water tariffs, online payment solutions, and regular updates on water supply status. Their commitment to environmental sustainability is reflected in the development of modern water purification facilities and agricultural irrigation systems. Additionally, BASKİ emphasizes customer satisfaction through various initiatives, such as educational programs and public engagement activities. With a mission to provide reliable, high-quality water services, BASKİ is constantly striving to meet the evolving needs of Balıkesir's residents while promoting sustainable practices for the future.