Not all cooling ponds require synthetic liners, but they are commonly used for added protection and efficiency. In some cases, natural soils or clay can provide enough resistance to water seepage, especially in areas with low groundwater flow or stable soil conditions. However, synthetic liners, such as geomembranes, are often preferred for their durability and ability to prevent water leakage.
These liners help contain the water within the pond, preventing contaminants from escaping and protecting the surrounding environment. They are particularly important in areas where the soil is not suitable for natural sealing or when the pond needs to meet stricter environmental regulations. Synthetic liners also offer greater resistance to erosion, chemical exposure, and biological growth compared to natural materials.
