Ключевые слова: blue, bronze, cape town, change, city, clear, climate, copy space, crisis, czech republic, drinkable, dvorak, ecology, environment, filter, flow, fountain, grass, green, horizontal, karel, nature, petrin, pipe, potable, prague, scarcity, shortage, splashing, statue, stress, system, technology, view, water, water crisis, water scarcity, water shortage,