Pit latrine

A type of toilet that collects human feces in a hole in the ground

Schematic of defecating into a pit latrine

A pit latrine close to a well in Lusaka, Zambia

A typical pit toilet

Digging a pit for an Arborloo in Cap-Haitien

A pit latrine is a type of toilet that collects human feces in a hole in the ground. They are a simple and cost-effective form of sanitation, often used in rural and peri-urban areas of developing countries. Pit latrines can vary in design, but they generally consist of a hole in the ground, a slab or floor with a hole, and a superstructure for privacy.

Design and Construction

Pit latrines are typically constructed by digging a pit in the ground, which can vary in depth from 1 to 3 meters. The pit is covered with a slab, which can be made of concrete, wood, or other materials, with a hole in the center for defecation. A superstructure, often made of wood, metal, or other materials, is built around the slab to provide privacy and protection from the elements.

The pit latrine may also include a vent pipe to reduce odors and fly breeding. This type of latrine is known as a ventilated improved pit latrine (VIP latrine).

Advantages

Pit latrines are relatively inexpensive to construct and maintain. They do not require water for flushing, making them suitable for areas with limited water supply. They can be built using locally available materials and labor, which makes them accessible to low-income communities.

Disadvantages

Pit latrines can pose health risks if not properly constructed or maintained. They can contaminate groundwater if located too close to water sources. They may also attract flies and produce unpleasant odors if not ventilated properly. When the pit fills up, it must be emptied or a new pit must be dug.

Environmental and Health Considerations

Proper siting of pit latrines is crucial to prevent contamination of drinking water sources. The pit should be located at least 30 meters away from wells or other water sources and should be downhill from them. Regular maintenance and emptying of the pit are necessary to prevent overflow and environmental contamination.

Also see

• Sanitation
• Ventilated improved pit latrine
• Composting toilet
• Ecological sanitation
• Water supply and sanitation in developing countries