The U.S. Environmental Protection Agency has banned the use of plastic swimming pools, saying they cause pollution.
It also said the pool is unsafe for swimming and bathing in and can damage a person’s lungs.
The rules go into effect Sept. 30.
The EPA says the plastic pools are made of polyethylene and polystyrene, which are used in building materials.
The plastic is toxic, but not as dangerous as PVC, which is made of PVC plastic, and can be used for plumbing.
A pool is not considered a swimming pool unless it has a metal edge.
In the U.K., the Government said the new rules would be effective starting Sept. 1.
In July, the Environmental Protection Authority said the pools are safe for swimming.
It said plastic pool equipment should not be more than 6 inches (15 centimeters) deep.
But in a statement, the agency said there are limits.
The rule does not say how many inches the pool should be, only that it should not exceed 5 feet (1.7 meters) in height.
The agency also said there is no minimum depth for the pool.
A few other countries are also requiring that swimming pools be made of plastic.
A total of 17 countries, including China, India, Japan, South Korea and the United States, have a pool law.
A ban on pooling has been in place in France, Denmark, Germany, Sweden and the Netherlands.