The retention pond liners normally use 1.5mm thickness for the ponds.

To capture harmful pollutants and extra rainwater,The ponds are built to solve a quick influx of water and slowly release into other ponds or stream,or slowly sink into the ground.

Q:How long do pond liners last?

A:20years exposed to the sun.

Q:Are pond liners toxic?

A:No.

Q:How do you keep a retention pond clean?

A:keep the surroundings clean and tidy.

Q:Is it safe to eat fish from a retention pond?

A:Not safe.