Canal liners can be safe for aquatic life, but their impact depends on the material used and the specific ecosystem. Flexible liners like geomembranes are generally inert and do not release harmful chemicals, making them safe for aquatic environments. However, if the liner alters the water's natural flow or temperature, it may disrupt the habitat for certain species
Concrete liners can also be safe but may leach substances like lime, which can affect water pH and potentially harm sensitive aquatic organisms. To ensure safety, liners should be selected based on the specific needs of the canal and its surrounding ecosystem, and non-toxic, eco-friendly materials should be prioritized.
