EPDM liners made specifically for use in ponds are safe for use with aquatic life. EPDM is leach resistant, and durable so that the risk of the material breaking down and releasing chemicals is greatly reduced.
Because of EPDM's leach resistance and durability preventing the material from breaking down, it can be frequently used in applications where there is aquatic life or where water quality is essential. Be sure to keep an eye on your water quality to ensure ideal conditions for your project and the life inside.