| Award | ALUMINUM SULFATE LIQUID/POLYALUM CHLORIDE | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $12.1M | Renewal | Dec 31, 2024 | 85721B0222001R001 |
| Award | ALUMINUM SULPHATE, LIQUID AND POLYALUMINUM CHLORIDE | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $16.0M | Competitive Sealed Bids | Jan 14, 2022 | 8572100138 |
| Award | ALUMINUM SULPHATE, LIQUID AND POLY-ALUMINUM CHLORIDE | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $16.0M | Competitive Sealed Bids | Dec 30, 2021 | 8572100138 |
| Award | SULFATE, LIQUID ALUMINUM (DEP) | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $5.6M | Competitive Sealed Bids | Sep 15, 2017 | 8571700317 |
| Award | SULFATE, LIQUID ALUMINUM (DEP) | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $1.7M | Renewal | Jun 13, 2016 | 8571400481 |
| Award | SULFATE, LIQUID ALUMINUM (DEP) | Citywide Administrative Services | CHEMTRADE CHEMICALS US LLC | $1.7M | Competitive Sealed Bids | Sep 16, 2015 | 8571400481 |