This tender invites bids for the repair and maintenance of the water supply line including leakages from Nadi to Kohli Tamachi Goth Union Committee Darsano Chano under Town Municipal Corporation Gadap in Karachi. The project involves excavation, laying and fixing of HDPE pipes, refilling trenches, constructing valve chambers, and fixing various fittings and valves. The work site is located in Gadap, Karachi, requiring careful handling of water supply infrastructure to ensure minimal disruption and effective restoration of the pipeline. The scope includes excavation in all soil types, precise alignment and grading of trenches, installation of high-density polyethylene pipes conforming to international standards, and testing for pressure compliance. The project demands skilled workmanship and adherence to technical specifications to address leakages and maintain water supply integrity. The engineering challenges include managing soil conditions, ensuring proper compaction, and installing durable fittings to withstand operational pressures. Bidders must be registered with the Pakistan Engineering Council in the appropriate category and demonstrate relevant experience with similar projects. Compliance with PEC registration, Sindh Revenue Board registration, NTN certification, and valid professional tax is mandatory. The contractor should have a turnover of at least PKR 4 million over the last five years and meet the financial and technical capacity requirements. Bid security of 5% of the estimated cost and a non-refundable tender fee of PKR 2,000 are required. The submission deadline is set for 26th February 2026 at 11:00 AM, with bid opening at 11:30 AM on the same day at the office of the Director (Contract Management), Town Municipal Corporation Gadap, Dumba Goth, Superhighway Karachi. Bids must be submitted online through the Sindh Public Procurement Regulatory Authority (SPPRA) e-procurement portal. Physical submission is not accepted. Interested bidders should ensure all documents are complete and bids are signed and stamped. Pro-Tip: Make sure to carefully review the bid security requirements and submit the Pay Order in favor of Town Municipal Corporation Gadap as specified. Missing or incorrect bid security is a common reason for rejection. Also, verify your PEC category and experience documentation to avoid disqualification during technical evaluation.