VERY INTERESTING ! I recall 40 years ago when I was a young Hydrogeologist and WatSan Projects such like financed by the WB were just " TOP - DOWN " imposed without consulting the local people....!
Couple of years later the results were just " MUSEUM OF HYDRAULIC " !
Then came the switch from WatSan to SANWAT when people realised " WATER " was just one of the tools to reach better HEALTH !
It is alos worth recording here the ream meaning of the SCIENCE HYGIENE = The science that deals with the promotion and preservation of health. HYGIENE is also called HYGIENICS and it is a SCIENCE just like chemistry, mathematic or Physic....!
Best luck to all