Final answer:
The maximum capacity of typical portable water tanks is around 5-10 gallons (about 19-38 liters).
Step-by-step explanation:
The maximum capacity of typical portable water tanks can vary depending on their size and design. However, a common size for portable water tanks used for camping or emergency purposes is around 5-10 gallons (about 19-38 liters).
For example, a popular portable water tank for camping has a capacity of 7 gallons (26.5 liters). This size is convenient for carrying and storing enough water for outdoor activities or emergencies.
It's important to note that the maximum capacity of portable water tanks can vary depending on the specific model or brand, so it's always a good idea to check the product specifications before purchasing.