Although the predecessor to today's widely used flush toilet system was devised by John Harington,it did not become widely used until the end of the 19th century.With the onset of the Industrial Revolution and associated technological advances, the flush toilet began to appear in its modern form.An important advancement in plumbing technology was the S-bend, invented by Scottish mechanic Alexander Cummings in 1775 and still in use today.The device uses standing water to seal the outlet of the bowl, preventing stale air from escaping down the drain.It wasn't until the mid-19th century, with increasing urbanization and industrial prosperity, that the flush toilet became a widely used and sold invention.This period coincided with a dramatic growth in sewerage systems, especially in London, which made flush toilets particularly attractive for health and hygiene reasons.Flush toilets are also known as "flush toilets," as opposed to the earthy toilets described above.The toilet first appeared in England in the 1880s and soon spread to continental Europe.In the United States, the chain-and-pull indoor toilet was introduced to wealthy homes and hotels in the 1890s.Invented by William Elvis Sloan in 1906, the flushometer uses pressurized water directly from the water supply to speed cycle time between flushes.

Usage 

Urination:

There are cultural differences in the accepted and preferred peeing positions in societies around the world: in the Middle East and Asia, the squatting position is more common, while in the Western world, standing and sitting are more common.

Anal Cleansing Habits:

In the Western world, the most common way to clean the anal area after a bowel movement is with toilet paper and sometimes with a bidet.In many Muslim countries, these facilities are designed to allow people to observe the Islamic toilet etiquette Qaḍāʼ al-Ḥājah.For example, the shower head of a bidet may be plumbed.The left hand is used for cleaning, so in many Asian countries it is considered impolite or polluted.Part of the reason many Christian countries use water is that biblical toilet etiquette encourages washing after all bowel movements.Bidets are common in Catholic countries where water is considered essential for anal cleansing,Bidet showers are common in some traditional Orthodox and Lutheran countries, such as Greece and Finland very common.Some toilets on the market have integrated water jets for anal and genital sprays in the seat (see Japanese toilets, for example).This is useful for the elderly or disabled.

Accessible toilets:

Accessible toilets are designed for people with physical disabilities, such as age-related mobility or the inability to walk due to a disability.Other measures to increase toilet accessibility are the provision of more space and grab bars for easy access to and from the toilet seat, including adequate space for caregivers when necessary.

Public Toilet:

public toilet, restroom, public bathroom or washroom is a room or small building with a toilet (or urinal) and sink for public use.These facilities can be used by customers, travelers, business employees, students and prisoners, and are usually divided into men's and women's toilets, but some are unisex, especially small or single-occupancy public toilets.