# Evanston Township Granicus #BID 26-49-0-2026/cs

Evanston Water Treatment Chemicals Procurement

**Posted:** October 08, 2026
**Respond By:** November 03, 2026
**Identifier:** BID 26-49-0-2026/cs
**NAICS:** 424690, 325998

The City of Evanston is seeking bids for a range of chemicals used in its drinking-water treatment process.
- **Government buyer:** City of Evanston, Purchasing Office, Evanston, Cook County, Illinois.
- **Procurement:** Bid 26-49 covers water-treatment chemicals, with awards made by group. Orders are placed as needed, and delivery is required within 10 calendar days of release to the Evanston Water Utility.
- **Requested products and quantities:** 575 of liquid aluminum sulfate; 1,440,000 wet pounds of polyaluminum chloride as an alternate; 140 tons of liquid chlorine in 2,000-pound containers and 12 liquid chlorine 150-pound cylinders; 250 tons of liquid hydrofluorosilicic acid; 25 tons of liquid cationic polymer; and blended phosphate in several formulations—40,000 gallons at a 40/60 ortho/poly ratio, plus 25,000 gallons each at 90/10, 70/30, 85/15, and 60/40 ratios. Quantities are as listed in the bid materials; units are not stated for the aluminum sulfate quantity.
- **Prequalified phosphate OEMs/products:** **Stiles Kem** Pristine SK-7641; **Carus Chemical** 8400, 8600, 8700, and 8800; **Calciquest** 4060; and **Hawkins** LPC-6. Only these prequalified products are accepted for Group E blended phosphate.
- **Other vendors named:** Alexander Chemical, Carus Corp., and Polydyne Inc. are identified as current vendors.
- **Notable requirements:** Product-specific safety data sheets and applicable ANSI/NSF Standard 60 certification are required. Chemical specifications include minimum purity or active-solids levels and minimum bulk-load sizes; the bid specifies minimum bulk deliveries of 4,300 gallons for several chemicals and 4,000 gallons for blended phosphate.

### Description

The City of Evanston is seeking bids for the purchase of chemicals used in the drinking water treatment process. Bids are to be submitted electronically through DemandStar by November 3, 2026, at 2:00 P.M. The contract period runs from award through December 31, 2027. Addendum No. 1 states that bids for the blended phosphate group are limited to the vendor-prequalified products listed in the bid documents.

[View original listing](https://www.cityofevanston.org/business/bids_proposals.php)