GMDA's 23 km Rs 41.6 crore sewer project from sectors 99 to 115 near Dwarka Expressway has a tender floated. Parallel, a Rs 33.6 crore project for sectors 58-76 addresses incomplete sewage networks. The wastewater will be treated at Sector 107 STP. Challenges included litigation, encroachments, and utility relocation. Expected completion by 2027 with an 18-month timeline.