Which equipment is NOT utilized by the water support company?

The water support company is primarily focused on providing decentralized water support to sustain operations. Among the options presented, the chemical treatment unit is not standard equipment utilized by these companies.

The Reverse Osmosis Water Purification Unit (ROWPU) and the Tactical Water Purification System (TWPS) are specifically designed for the production of safe drinking water from various sources. The ROWPU, in particular, is widely used in tactical environments to provide potable water quickly and efficiently. Similarly, the Heavy Expanded Mobility Tactical Truck Load Handling System (HEMTT LHS) is utilized primarily for transporting supplies, including water, and is thus essential in the logistics of water support operations.

In contrast, while a chemical treatment unit may be used in broader water treatment settings, it is not specifically designed for the core mission of providing immediate, tactical water support in combat operations. Thus, the absence of a chemical treatment unit in the standard equipment list for a water support company aligns with its focused operational capabilities and priorities.