HNB Engineers emerges as L1 bidder for implementation of Tajpur Khurd and Bijwasan Decentralized Sewage Treatment Plants Project in Delhi July 24, 2026 | Awarded, Key Segments, Municipal Wastewater, Project Updates, Wastewater HNB Engineers Private Limited has emerged as Lowest (L1) bidder for implementation of Tajpur Khurd and Bijwasan … This content is restricted.