A toilet is a sanitation fixture used primarily for the disposal of human excrement and urine, often found in a small room referred to as a toilet/bathroom/lavatory. Flush toilets, which are common in many parts of the world, may be connected to a nearby septic tank or more commonly in urban areas via "large" (3–6 inches, 7.6–15 cm) sewer pipe connected to a sewerage pipe system. The water and waste from many different sources is piped in large pipes to a more distant sewage treatment plant. Chemical toilets are used in mobile and many temporary situations where there is no access to sewerage, dry toilets, including pit toilets and composting toilet require no or little water with excreta being removed manually or composted in situ. Other toilet types
A pit toilet is a dry toilet system which collects human excrement and urine in a large container or trench and ranges from a simple slit trench dug in the ground to more elaborate systems with seating and ventilation systems. They are more often used in emergency, rural and wilderness areas as well as in much of the developing world.
Dry toilets, which use very limited or no water for flushing include the pit toilet (a simple hole in the ground, or one with ventilation, fly guards and other improvements) and composting toilet (which mix excrement with carbon rich materials for faster decomposition),
A public toilet, frequently called a restroom, is accessible to the general public. It may be within a building that, while privately owned, allows public access. Access to a public toilet may require a fee, (pay toilet), or may be limited to business's customers.
The portable toilet is used on construction sites and at large outdoor gatherings where there are no other facilities. They are typically self-contained units that are made to be easily moved to different locations as needed. Most portable toilets are unisex single units with privacy ensured by a simple lock on the door. The units are usually light...
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