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'''A Urine Diverting Dry Toilet (UDDT) is a toilet that operates without water and has a divider so that the user, with little effort can divert the urine away from the faeces.'''
The UDDT toilet is built such that urine is collected and drained from the front area of the toilet, while faeces fall through a large chute (hole) in the back. Depending on the Collection and Storage/Treatment technology that follows, drying material such as lime, ash or earth should be added into the same hole after defecating. Men, as well as women, need to sit while urinating to ensure that the urine is diverted into the correct channel.
It is important that the two sections of the toilet are well separated to ensure that a) faeces do not fall into, and clog the urine collection area in the front, and that b) urine does not splash down into the dry area of the toilet.
Water used for anal cleaning must be kept separate in order not to dilute faeces or pollute urine with pathogens. This requires a separate facility for anal cleaning. Small amounts of anal cleaning water can be infiltrated. Larger volumes need to be treated (together with grey water) to prevent ground water pollution.
There are also 3-hole separating toilets that allow anal cleansing water to be separated from the urine and the faeces into a third, dedicated hole. It is important that the faeces remain separate and dry. When the toilet is cleaned with water, care should be taken to ensure that the faeces are not mixed with water.
Both a pedestal and a squat slab can be used to separate urine from faeces depending on user preference. Urine diverting dry toilets can be made out of ceramic, ferro-cement, fibre-enforced materials, or strong, durable, plastic and painted wood. It is important that the surface is smooth and hardened.
{{procontable | pro=
- Does not require a constant source of water <br>- No real problems with odours and vectors (flies) if used and maintained correctly (i.e. kept dry) <br>- Can be built and repaired with locally available materials <br>- Low capital and operation costs <br>- Large scale nutrient recovery is a realistic possibilty. <br>- Suitable for all types of users (sitters, squatters, washers, wipers) | con= - Requires education and acceptance to be used correctly <br>- Is prone to clogging with faeces and misuse <br>-Special child seats have to be provided to keep their urine and faeces separate. }}
==Adequacy==
== Movie ==
* [http://youtube.com/watch?v=pYJE2X7s3rs Urine diverting dry toilet - YouTube]
== Manual - How to build ==
For more information on Dry Urine Diversion Toilets read this [http://www.wrc.org.za/downloads/report%20lists/web%20rpts/devco/TT275-06.pdf document]
* Winblad, U. and Simpson-Herbert, M. (2004). Ecological Sanitation. Stockholm Environment Institute, Sweden. Available: [http://www.ecosanres.org www.ecosanres.org] (Provides a good, general overview of different types of UDDTs – see especially page 59.)
* General information [http://www.gtz.de/ecosan www.gtz.de/ecosan]
* General information [http://www.ecosanres.org www.ecosanres.org]
* General information [http://www.ecosan.nl www.ecosan.nl]
* South Africa [http://www.csir.co.za www.csir.co.za]
* Scope, India [http://www.scopetrichy.com/Urine_Diversion_toilet_in_Schools.asp Dry Urine Diversion toilet in schools]