Official Notice to Bidders for Sodium Bisulfite (Request for Bid)

The Gary Sanitary District (GSD) is seeking qualified vendors to provide the procurement and delivery of 38% sodium bisulfite for use in the de-chlorination of treated wastewater effluent prior to discharge into the Grand Calumet River. This chemical is a critical component of GSD’s treatment process, ensuring effective removal of residual chlorine and continued compliance with the District’s NPDES permit requirements . The project aims to secure a reliable, high-quality supply of sodium bisulfite along with dependable delivery services that support uninterrupted plant operations and regulatory compliance. GSD is interested in partnering with experienced vendors who can demonstrate product consistency, safety, and responsiveness to operational needs. Through this competitive bid process, GSD seeks to establish a cost-effective and dependable solution that protects water quality, supports environmental stewardship, and maintains the District’s commitment to producing living water for a quality environment.