Sustainable sanitation: Public UDDT: Valley
Sustainable sanitation: Public UDDT: Plan. This UDDT has minimal steps and even this one step could be replaced with a ramp
Sustainable sanitation: Public UDDT: Construction UDDT chambers
Sustainable sanitation: Public UDDT: construction of a double chamber system
Sustainable sanitation: Public UDDT: double chambers
Sustainable sanitation: Public UDDT: men inside
Sustainable sanitation: Public UDDT 7
Sustainable sanitation: Public UDDT inside view
Sustainable sanitation: Kopie von P1040917
Sustainable sanitation: Kopie von Kopie von Klo drinnen1