German authorities have announced plans to close the Gac water-treatment plant in Gac, a village near the northern German city of Dresden.

Gac is the largest water- treatment plant in Germany, serving about 5 million people.

Germany is also one of the most polluted countries in Europe.

Gach-Oberwachterbuch, or environmental protection authority, said in a statement on Friday that the plant will close “at the end of June” and that it will be replaced by another water-processing plant.

Germany’s Green Party, the country’s oldest political party, has long pushed for a ban on the use of chlorine in water treatment and said the planned closure would “send a clear signal to Europe that we do not want this waste to continue.”