How would water remove charcoal and sugar in recrystallization?

In recrystallization, water acts as a solvent that selectively dissolves the desired compound while leaving impurities like charcoal and sugar undissolved. Charcoal, being insoluble in water, can be easily filtered out, while sugar, depending on the temperature and concentration of the solution, may dissolve if the conditions are suitable. By cooling the solution slowly, the desired crystals can form, while the impurities remain in the solution or are filtered out. This process helps in obtaining purer crystals of the target compound.