Twelve new sewage treatment plants will open on the River Odra, a government minister said on Wednesday.
Tests have shown the presence of toxic hydrocarbons in the River Odra, which are not of natural origin but a technological by-product, two opposition MPs said on Monday in Olsztyn, northern Poland.
With climate change meaning hotter summers and low levels of water in one of Poland's biggest rivers, experts say that it was only a matter of time before something happened.
A group of scientists has appealed to the government for a new river management policy to prevent a repeat of the environmental disaster that has affected the River Odra.
The government has adopted a bill introducing aid for businesses affected by the environmental disaster on the River Odra, a government official said on Wednesday.
More than 200 tonnes of dead fish have been removed from Poland's second longest river since the River Odra's pollution issue first came to light in late July.
A total of 134 tonnes of dead fish, recovered from the River Odra, have already been disposed of, the Zachodniopomorskie provincial governor has said.
Through the use of satellite images, German scientists have confirmed a massive algal bloom in the River Odra, in which an unknown pollutant has led to mass deaths of fish, the RND website reported on Monday.