Interesting - in our country we have street-level stormwater channels which are separate from sewers, and drain straight to streams, rivers and ultimately the o

Interesting - in our country we have street-level stormwater channels which are separate from sewers, and drain straight to streams, rivers and ultimately the ocean. Is that sort of infrastructure not present in Belgium? I can imagine retrofitting that kind of thing into older urban streets may be tricky, but seems like a wise investment.