♻️ Sewage Treatment Work Tender | GT Ref No: 136429826 💧 Kolkata Municipal Corporation has floated a tender for sewage treatment related infrastructure works. 📍 Location: Kolkata, West Bengal 📅 Tender Released: 21 May 2026 ⏳ Last Date: 15 June 2026 📌 Category: Sewage Treatment Works 🆔 GT Reference Number: 136429826