| Chemicals | Chemicals for water & wastewater treatment. |
| Construction Services | Construction-related services for new construction, rehabilitation, and repair projects. |
| Maintenance & Repair | Non construction-related maintenance and repair work. |
| Other Services | |
| Professional Services | This category consists of consulting services for architecture, surveying, hydrogeology, engineering and other related services. |
| Service Contracts | This category consists of services such as Uniform Rentals, HVAC Maintenance, Pest Control, etc. |
| Vehicles and Equipment | Vehicles and equipment purchases. |