This sealed‑bid contract supplies the Worcester Water Filtration Plant with four core chemical products—liquid chlorine, liquid aluminum sulfate, pebble lime, and a liquid cationic polymer—for a one‑year period. The City issued a public, full‑and‑open competition (Form 30B) and awarded each chemical item to the lowest‑priced responsive vendor. Vendors must meet NSF‑Standard 60, AWWA specifications, and strict delivery‑security procedures, including pre‑delivery driver identification and sealed unloading points. The contract includes a one‑year base term with the possibility of two additional one‑year renewals at the City’s discretion.