There are boats on the Douro River that are making illegal discharges and there is no one controlling them. They are identified as one of the causes of river pollution.
But for environmentalists and researchers, this is just one of many problems. There are 22 thousand houses or commercial spaces with direct or indirect sewage to the Douro estuary.
See the full report here.
Source: RTP Notícias; Image: Quentin Marquet, Pixabay.