Khushab (Urdu: خُوشاب‎) is a city as well as a district in the Punjab province of Pakistan. The word Khushab means "sweet water." Khushab city also serves as the headquarters of Khushab Tehsil, an administrative subdivision of the district Khushab.The city of Khushab is home to the Khushab Nuclear Complex, a critical part of the Pakistan's Special Weapons Program, which has come under much heated scrutiny.