"So, because the poison concentration in the lake is beyond your expectation, you have to take another approach?" The Valley Master frowned, falling into deep thought.
"Yes. We are measuring everything right now, but of course, I'm here not to bring only bad news."
"Hoh? What is the good news?"
"One of our members has the ability of water purification. He might be a Spirit Wielder right now, but after some testing, we can ask him to purify the water. This way, we don't have to drain the lake."
Water Purification ability caught the Valley Master's eyes. "Are you sure about that?"
"Yes. We first divide the lake into fifty sections and ask him to purify fifteen sections per day. If we can ask him to start earlier, then we will only have one day's delay. On the plus side, the city won't be harmed in any way, considering you can use the water immediately."
"But how can I know that his purification ability is working?"