Manchester Water Works is seeking a qualified supplier to provide a full‑year inventory of NSF/ANSI Standard 60‑certified water‑treatment chemicals and related services for its Lake Massabesic and Merrimack River treatment plants. The contract runs July 1 2026 – June 30 2027, with up to three one‑year renewal options, and requires delivery of liquids, gases, and bulk solids within tight temperature, pressure, and safety‑data‑sheet compliance parameters. Bids must be submitted in three sealed paper copies by the bid opening deadline; no electronic bids are accepted. The award will be made by the Board of Water Commissioners on April 23 2026. • Supply of 12 distinct chemicals (e.g., 12.5 % sodium hypochlorite, liquid alum, phosphoric acid, caustic soda, PAH, fluorosilicic acid, aqueous ammonia, liquid oxygen, soda ash, sodium bisulfite) plus granular activated carbon and its disposal service. • Quantities total roughly 200 k gal of liquids, 500 tons of LOX, 850 tons of soda ash, and 134 tons of GAC, all requiring NSF‑60 certification, weight/ID certificates, and SDS on each delivery. • Delivery windows 8 a.m.–3 p.m., Monday‑Friday, with 7‑day notice, driver ID, and temperature limits ≤46.1 °C; insurance and indemnity coverage specified.