While most standard panels don't contain liquid, specialized solar thermal systems and emerging liquid-cooled PV technologies are changing the game. What's Inside. . Recent scientific studies from leading environmental research institutions have investigated the potential risks of solar panel components leaching into groundwater and affecting drinking water supplies. When moisture is trapped within the panels then this is a strong sign that the sealing has been compromised and there could be numbers of reasons as to why it has failed. Cooling Effect: Positive Impact: Water can help cool solar panels, reducing the temperature. . Solar panels need to withstand the elements to keep producing power for decades, and water is one of a solar module's trickiest foes. Next, we will explore the effects of submersion in water on solar panel durability.