When purchasing a water truck, it is important to consider what size you will need and whether you wish to buy a used or new truck. Water trucks come in a large range of sizes. From the smallest trucks capable of hauling only 500 gallons of water to the largest rigs with 5,000-gallon capacities, the water truck you need will depend on how it will be utilized. Smaller water trucks are ideal for work in smaller spaces. Conversely, larger water trucks are often necessary for massive job sites or heavy-duty construction work. Once you decide on the size of your water truck, you will want to determine whether you plan to purchase new or used. Buying a used water truck allows for more flexibility in your budget. However, a new water truck will provide better warranties and fewer maintenance concerns. Either way, make sure you factor in any financing options you will need to complete the purchase.