Yamuna Action Plan (YAP):

1. Objective: The primary objective of the Yamuna Action Plan is to reduce pollution and restore the water quality of the Yamuna River, which flows through several states in northern India.

2. Objective: The primary objective of the Yamuna Action Plan is to reduce pollution and restore the water quality of the Yamuna River, which flows through several states in northern India.

3. Phases: The YAP has been implemented in multiple phases. The first phase was initiated in 1993, and subsequent phases followed.

4. Activities: The YAP involves various activities, including the construction of sewage treatment plants (STPs) and sewage interception and diversion projects to prevent untreated sewage from entering the river. Efforts are also made to control industrial pollution and promote public awareness about the importance of a clean Yamuna.

5. Challenges: The Yamuna River faces significant pollution challenges due to the discharge of untreated sewage, industrial effluents, and agricultural runoff. Population growth and urbanization along its banks have exacerbated the pollution problem.