Phosphorus is a nutrient, and phosphorus is fundamentally…

Phosphorus is a nutrient, and phosphorus is fundamentally not toxic. In the upcoming cold season, in which hardly any algal growth takes place, the risk of eutrophication of water bodies from higher phosphorus inputs is still low. In the medium and long term, however, higher phosphorus discharges would be very problematic, particularly for sensitive water bodies. Moreover, nutrients reach the seas via rivers and endanger especially the coastal areas of the North and Baltic Seas, placing a lasting burden on them. Algal formation becomes so intense that all other life dies. Due to a 50-60% shortage of chemicals through the end of 2022, many German treatment plants are currently unable to prevent exceedances of phosphorus limit values, and phosphorus enters the environment.
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