Which of the following latrines is the cheapest one?

Bucket latrines pose health risks.

What is the number of chambers in UDDT toilets?

What is the duration of use of each UDDT chamber?

What is the average amount of water required for normal flushing?

What is the maximum height of compacted waste?

What is the area of land required for 4000 people for disposal of waste?

An aquaprivy is similar to a ___