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From 1880 onwards, however, the emphasis has been more on aesthetics to make cisterns and bowls decorative. The bowls were so colorful that some suggested to use these as soup bowls. It was in 1880 that the toilet curtains made their appearance. The trend was called the age of "Belleepoque" in France and Edwardian (opulence) in England. During 1890 we had the first cantilever type of toilet. Since then the world has not witnessed any significant technical change except some change in shape of toilets and reduction in quantity of water per use.
It was around 1900 that the institution of bathroom came in vogue in Europe. In India the institution of Gushalkhana (bathroom) was established by the Mughal Kings in 1556. Oppressed by the heat and dust the Kings constructed luxurious bathing and massage facilities. But this was only for the rich. The ordinary citizens however lived in unsanitary conditions.
Unlike in the past when latrines were tucked away in attics to keep it away from nose and eye of the family and the society. In contrast the twentieth century has given a pride of place to toilet in the home-rather these are more opulent, more spacious than anytime in the past. While the provision of toilet in the house solved household problem of cleanliness but the challenge remained as to how to dispose of human waste at city level. This was also solved when the sewerage system was introduced. Haussmann in 1858, describes beautifully the sewerage system. He said that "the underground galleries which are the organs of the big city will work in the same way as organs of the body, without being revealed.
The pure and fresh water, the heat and light will circulate like the various fluids whose movement and maintenance are necessary to ensure life. The secretions will not mysteriously like place there and maintain public health without disturbing the order of the city and spoiling its outer beauty". Around the same time the sewerage system was introduced at Calcutta - capital of colonial India. However its extension in the country was and remains slow as it is capital intensive and beyond the resource capacity of the economy even today.
In 1970, realizing that sewerage facilities will remain out of the reach of the society at large, Sulabh International introduced a pioneer technology twin pourflush latrines and human excreta based Biogas plants. We have constructed in the last 25 years over 650,000 toilet cum bath complexes and 62 human excreta based biogas plants and are maintaining them. I believe this gives an appropriate solution to dispose of and recycle human waste into fertilizer, electricity and working gas.