Christine + Hagen Graf:
The canal were the waste water arrives
Christine + Hagen Graf:
Purification Plant Lugano
Christine + Hagen Graf:
Sand filtered from waste water
Christine + Hagen Graf:
Toilet paper
Christine + Hagen Graf:
Purification Plant Lugano
Christine + Hagen Graf:
Purification plant
Christine + Hagen Graf:
Purification Plant Lugano
Christine + Hagen Graf:
Purification Plant Lugano
Christine + Hagen Graf:
Bacteria are added to the water.
Christine + Hagen Graf:
Purification plant
Christine + Hagen Graf:
Purification plant
Christine + Hagen Graf:
Purification plant