"Not a single trace of impurity?" David Morris seemed to realize something, and his tone became urgent. "Mr. Lovegood, do you mean... ultrapure water?"
"Could its resistivity reach..." He paused, seeming to search for a way of putting it that wizards could understand. "Simply put, the water you conjured this time contains no impurities whatsoever."
"The impurities I mean include bacteria, viruses, all kinds of organic matter, minerals, even other trace elements..."
He shrugged, apparently feeling that his explanation was still inadequate, and his tone carried a touch more helplessness. "In short, the water you conjured is very pure. Is that right?"
Vizet nodded. "Yes. At least, that was the intention I had when I cast the spell."
David Morris's expression turned serious. "Mr. Lovegood, is this something only you can do, or..."
His gaze fell on the examinees who were frowning and wiping sweat as they struggled to cast Transfiguration. "Can all wizards achieve this effect by casting this spell?"
"There's no way for everyone to achieve this effect." Vizet shook his head. "You need to master certain techniques to do it."
"You need to understand the Water-Making Spell to a certain extent before you can summon the water you need according to your own will."
"The name of this spell is the 'Water-Making Spell'?" David Morris frowned. "I think I've heard of this spell before..."
He thought for a moment before saying, "From what they told me, the Water-Making Spell seems to be quite commonly used, but they never told me... that it could achieve this level of effect."
Vizet explained, "We normally don't need water that pure. Ordinary water, or cleaner water, is enough for our purposes."
"As for water with special effects, it is mainly used in Potions and Alchemy—for example, pond water bathed in full