Once a swampy backwater of fewer than 20 million people, the Pearl River Delta—the southern swath of mainland China above Hong Kong—now has three times that population. Tens of millions more humans in the Pearl River Delta means many more toilets a-flush, pumping a steady gush of human waste into the South China Sea.
Read the full story at Quartz
Perhaps now it’s time to consider to redirecting all that waste somewhere instead of the sea :/
The Hong Kong government has actually been doing that since 2001 with good results, but during that time the pollution from mainland China via the Pearl River which is right next to HK has risen continuously. Hopefully they will fix that soon!