Measure the amount of water that you can pour into the tank. You must save every drop of water that is why you should carefully route the pipes by creating a strategic plan.

Prevent the poisonous liquid from flowing into your city's drainage system. Perhaps you could create a new path that would bring the toxic liquid back to its container.

Strategically place and connect the available pipes and water basins to the pipelines in each of the levels. Find the best possible way to route the water by using the existing pieces or adding in new ones that are available to you. Unlock and discover the pattern within the level by using trial and error.