| Award | SODIUM BISULFITE - DEP | Citywide Administrative Services | HOLLAND COMPANY INC. | $534K | Renewal | Oct 28, 2024 | 85723B0135001R001 |
| Award | ALUMINUM SULFATE, LIQUID & POLYALUM CHLORINE | Citywide Administrative Services | HOLLAND COMPANY INC. | $206K | Renewal | Oct 28, 2024 | 85721B0222002R001 |
| Award | Polyaluminum Chloride and Polyaluminum Hydroxychl POLYMERS | Citywide Administrative Services | HOLLAND COMPANY INC. | $518K | Competitive Sealed Bids | Feb 15, 2024 | 85724B0037001 |
| Award | SODIUM BISULFITE--DEP (BWS) (RE-AD) | Citywide Administrative Services | HOLLAND COMPANY INC. | $267K | Competitive Sealed Bids | Nov 15, 2023 | 85723B0135001 |
| Award | ALUMINUM SULFATE, LIQUID AND PLOYALUMINUM CHLORIDE | Citywide Administrative Services | HOLLAND COMPANY INC. | $243K | Competitive Sealed Bids | Jan 14, 2022 | 8572100138 |
| Award | aluminum sulfate liquid and poly-aluminum chloride | Citywide Administrative Services | HOLLAND COMPANY INC. | $243K | Competitive Sealed Bids | Dec 30, 2021 | 8572100138 |