Wastewater Mainline and Service Line

The City of Columbia is soliciting qualified contractors to rehabilitate, repair, or replace aging wastewater mains and service laterals throughout its service area, with the ability to perform emergency repairs as needed. This contract will cover a range of civil‑construction activities focused on restoring the integrity of the municipal wastewater infrastructure. • Scope includes trenchless or open‑cut rehabilitation of existing mains, full replacement of deteriorated pipes, and installation of new service laterals. • Contractors must be capable of responding to emergency repair calls and providing 24/7 on‑call support. • Work must comply with City specifications, local code requirements, and environmental regulations, and include testing, inspections, and as‑built documentation.