Ключевые слова: aggregate, aquarium, background, bottle, color, cup, dam, design, domestic, drop, equipment, faucet, filter, filtration, h2o, hose, ice, icon, illustration, isolated, line, linear, lined, modern, molecule, ocean, ph, pollution, pouring, precipitation, purification, purifying, renewal, sea, sign, state, symbol, water, waterfall, well, world,