ATP-4-90 Brigade Support Battalion Download
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Sustainment Planning Factors 18 June 2020 ATP 4-90 C-5 C-14. The following tables depict water production assets, allocation of water assets, and consumption factors. Table C-7 lists the current equipment in the Army inventory that produces water and its capacity to produce or hold water. Table C-7. Water production and storage equipment Equipment/System Capacity Load Handling System Compatible Water Tank Rack (HIPPO) 2,000-gal tank designed for palletized load system (PLS)/ load handling system (LHS) transport. Tactical Water Purification System (TWPS) - 1,500 gallons per hour (GPH) from fresh and 1,200 GPH from salt water. - PLS/LHS-compatible flatrack mounting system. Semi-Trailer Mounted Fabric Tank (SMFT) (Army Pre-positioned stocks only) - SMFT is moved either completely empty or full. - 3,000 gallons (30-feet) on an M871. - 5,000 gallons (40-feet) M872 trailer. Lightweight Water Purifier System (LWPS) - Light vehicle transportable. - Maximum production: 125 GPH (freshwater)/ 75 GPH (saltwater) Reverse Osmosis Water Purification Unit (ROWPU) 3,000 Mounted on an M871 TLR Maximum production: 3,000 GPH (freshwater) 2,000 GPH (saltwater) Expeditionary Water Packing System (EWPS) (Marine) 600 each 1-liter bottles per hour. 12 each 1-liter bottles per case. 50 cases per 48” pallet; 600 liters per 48” pallet C-15. The type of environment where operations occur will significantly affect water consumption planning factors. The four types of environments tropical, arid, temperate, and cold each present different planning considerations. The planning factor in table C-8 on page C-6 accounts for each type of environment. Tropical areas of the world have an annual mean daily temperature of more than 80 degrees Fahrenheit. In tropical regions, water sources are expected to be abundant. Arid areas of the world have an annual daily temperature of more than 80 degrees Fahrenheit. In arid regions, available water sources are typically limited and widely dispersed. Temperate areas of the world have an annual mean daily temperature ranging from 32 degrees to 80 degrees Fahrenheit. In temperate regions, water sources are normally abundant. Cold areas of the world have an annual mean daily temperature of less than 32 degrees Fahrenheit. Location and exploitation of water sources convenient for water supply operations may be difficult in cold environments. C-16. The planning factor for potable ice is based on two pounds per Soldier per day in a temperate climate (32 to 80 degrees Fahrenheit) and up to 6 pounds per Soldier per day in hot tropic and arid climates (more than 80 degrees Fahrenheit). Planners can adjust these figures to operations based on actual unit demands. C-17. Water requirement planning is necessary regardless of their theater location. The numbers in the following tables are in gallons per Soldier per day. Sustainment planners should start with these planning factors and then adjust them based on considerations including the unit’s particular circumstances, task organization, historical usage factors, and mission variables. Table C-8 on page C-6 provides planning factors for water consumption based on the type of operation and climate for operations.