Certainly the 50/50 point had not been achieved by 1960, and it is unlikely that 90 percent have achieved this Utopian Dream by 2007, (I have no document or reference to support this claim, except personal observation.)
Johnathan R. Plumber
Indoor plumbing was invented by the Romans. Its common use in the US began around the turn of the 20th century with the advent of pumps to move water. Some inventive people had used storage tanks and hand powered pumps to provide indoor plumbing as early as the 18th century but these were not in widespread use.
People had an easier way to transport waste outdoors from inside facilities.
Running water in homes became increasingly common in the United States during the late 19th and early 20th centuries, particularly between the 1880s and 1920s. By the 1920s, many urban areas had widespread access to indoor plumbing, while rural areas lagged behind. The advent of municipal water systems and advancements in plumbing technology played significant roles in this transition. By the mid-20th century, running water had become a standard feature in most American homes.
Madam Walker, whose birth name was Sarah Breedlove, worked in cotton fields as a child and teenager. She began working as a washerwoman doing other people's laundry at a time when most Americans did not have electricity, indoor plumbing or washing machines and dryers. She continued working as a washerwoman and sometimes as a cook during her twenties and thirties until she began selling hair care products and founded her own company. (Source: On Her Own Ground: The Life and Times of Madam C. J. Walker by A'Lelia Bundles)
Mayans and the Incas I think
I was born Mar 31. 1929. In a small town in IL. We always had indoor plumbing. The Aztec's had indoor plumbing.
It’s indoor plumbing
The ancient Egyptians had flush toilets. The ancient Romans had indoor plumbing.
About 2,000 years ago the Romans started using indoor plumbing.
yes they have it
Indoor Plumbing
Check out ancient Rome or Greek plumbing history
YES
No
12%
I belive that some parts of India still dont have indoor plumbing but, check smoe other sources too!!