Pit Latrine. Image credit sswm.info
ZIMSEC O Level Combined Science Notes: Pit Latrine
- It consists of a deep hole in the ground into which all human urine and faeces (excrement) are deposited
A pit latrine
- Borehole latrines have a deeper hole (+5m) than ordinary latrines and have a longer lifespan
- Pit latrines are best for isolated houses and small villages
- They must be built on solid ground that is permeable
- They should ideally have a concrete floor for easy cleaning
- A concrete lining to prevent burrowing by rates and other vectors
| What you should do | What you should not do |
|---|---|
| Add water from time to time to improve the decay of waste | Allow any disinfectants into the pit. These kill the bacteria which decomposes waste reducing the lifespan of the pit |
| Have a cover or seat to improve hygiene. This prevents flies from entering and leaving the pit and spreading diseases | Dig in heavy soils or where soil is shallow |
| Keep surface structures clean and fly free using a disinfectant | Continue to use pit after waste accumulates. Fill with soil and make a new one |
To access more topics go to the Combined Science Notes page
