ok,

Share of the population using safely managed sanitation facilities

• 884 million people in the world, approximately 1 in 8, do not have access to safe water
• 2.5 billion people across the globe lack access to adequate sanitation services
• 1.4 million children die every year, 1 child every 20 seconds, from diarrhea caused by unclean water and poor sanitation
• 443 million school days are lost each year to water-related diseases
• 47% of diarrhea incidents can be reduced by hand-washing with soap at critical times
• 87% say they washed their hands after using public lavatories
• 77% actually wash their hands after using a public restroom
• 46% say they wash their hands for 15 seconds or less
• 15-20 seconds equals the amount of time recommended for hand-washing with soap and water
• 200% the average increase in life expectancy at birth since the introduction of modern, indoor plumbing

above Current Statistics with additional source links

but, as you said, all of these figurative people can get right outta town.

plumbers through history have saved countless lives, whether you think so or not. I say they are in the top 5 all-time life saving professions.

edit: upvoted you cuz you responded :-)