Sulfur-Based Chemicals for CWD

The City of Cambridge is seeking bids for the provision of sulfur-based chemicals for the Cambridge Water Department (CWD). The contract will be for a period of one year, from June 1, 2026, to May 31, 2027. The City estimates an annual usage of 250,000 gallons of aluminum sulfate, 30,000 gallons of ammonium sulfate, and 4,000 gallons of sodium bisulfite. Bidders must meet certain quality requirements, including having National Sanitation Foundation Standard 60 Approval and at least five years of experience selling the proposed chemical to municipal or private water facilities. • The bidder must provide a list of three potable water treatment plant references for which the bidder has supplied similar services. • The bidder must submit a certificate of analysis for each chemical bid on. • The bidder must comply with the City's living wage ordinance and provide proof of insurance. • The bidder must provide a detailed transportation plan, including information on the companies involved in the manufacture, distribution, and transportation of the chemical.