Ayyappa Infra emerges as L1 bidder for implementation of Keshopur STP Phase-I Upgradation Project in Delhi November 6, 2025 | Awarded, Key Segments, Municipal Wastewater, Project Updates, Wastewater Ayyappa Infra Projects Private Limited has emerged as the lowest (L1) bidder for implementation of Keshopur STP Phase-I … This content is restricted.