To convert the volume of the cylindrical water tank from cubic centimeters (cm³) to liters, you can use the conversion factor that 1 liter (L) is equal to 1000 cubic centimeters (cm³).
Given that the volume of the tank is 5000 cm³:
\[ \text{Volume in liters} = \frac{\text{Volume in cm}^3}{1000} \]
Substituting the given volume:
\[ \text{Volume in liters} = \frac{5000 \text{ cm}^3}{1000} = 5 \text{ L} \]
Therefore, the capacity of the water tank is 5 liters.