Here is the translation of the given Hindi text to English: "Action plan for Yamuna cleaning in Noida:: 24 STPs will be installed on drains, 5 DPRs are being reviewed by IIT Delhi; will be ready by December 2027."

The Noida Authority has started working on an action plan to free the Yamuna from pollution. In a meeting held on Wednesday under the chairmanship of the Chief Secretary, instructions were given to prepare a detailed action plan for cleaning the Yamuna. The Yamuna flows through approximately 17 kilometers in Noida. Water from small and large drains in the city reaches the Yamuna through the main Kondli drain. According to the authority, the drains are treated with STP before flowing into the Yamuna.