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{|style="float: left;"|{{Language-box|english_link=Urine_Diverting_Dry_Toilet|french_link=Toilettes_sèches_avec_séparation_d’urine|spanish_link=Retrete_Seco_con_Desvio_de_Orina|hindi_link=coming soon|malayalam_link=coming soon|tamil_link=coming soon | korean_link=coming soon | chinese_link=Coming soon | indonesian_link=Coming soon | japanese_link=Coming soon}}|}<!-- table at top of page with logo, picture, Application level, Management level and input-output tables --br><br>{|width="100%"|style="width:25%;"|{{santable_shortsantable_short_new|

Input1=Faeces|Input2=Urine |Input3=Anal cleansing waterCleansing Water| Input4= Dry Cleansing Materials |Input5=|Output1=Faeces| Output2=Urine | Output3=Anal cleansing water Cleansing Water | Output4= Dry Cleansing Materials | Output5=

[[Image:Icon_urine_diverting_dry_toilet.png|right|80px]][[Image:dry_urine_diversion_toilet.png|thumb|right|150px200px|[[Dry urine diversion toilet |Dry urine diversion toilet]], in the Philippines (for credits, click on the photo)]]

<br>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.

===Design Considerations=== '''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. :

There are also 3-hole separating toilets that allow anal cleansing water to be separated from a) faeces do not fall into and clog the urine and collection area in the faeces into a thirdfront, 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 b) urine from faeces depending on user preferencedoes not splash down into the dry area of the toilet. '''

{{procontable | pro=There are also 3- Does not require hole separating toilets that allow anal cleansing water to go into a third, dedicated basin separate from the urine drain and faeces collection. Both a constant source of water <br>- No real problems with odours pedestal and vectors (flies) if a squat slab can be used to separate urine from faeces depending on user preference. Urine tends to rust most metals; therefore, metals should be avoided in the construction and maintained correctly piping of the UDDT. To limit scaling, all connections (i.e. pipes) to storage tanks should be kept dry) <br>- Can as short as possible; whenever they exist, pipes should be built and repaired installed with locally available materials <br>- Low capital at least a 1% slope, and operation costs <br>- Suitable sharp angles (90°) should be avoided. A pipe diameter of 50 mm is sufficient for all types of users steep slopes and where maintenance is easy. Larger diameter pipes (sitters> 75mm) should be used elsewhere, squattersespecially for minimum slopes, washersand where access is difficult. To prevent odours from coming back up the pipe, wipers) | con= - Requires education and acceptance to an odour seal should be used correctly <br>- Is prone to clogging with faeces and misuse }}installed at the urine drain.

<br>{| border="1" cellpadding="5" cellspacing="0" align="none"|-! width="50%" style=Health Aspects / Acceptance"background:#efefef;" | Advantages! style="background:#f0f8ff;" | Disadvantages|-| valign="top" |The UDDT is - Does not intuitive or immediately obvious to some usersrequire a constant source of water <br>- No real problems with odours and vectors (flies) if used and maintained correctly (i.e. At first, users may kept dry) <br>- Can be hesitant about using it built and mistakes repaired with locally available materials <br>- Low capital and operating costs <br>- Good for areas where pit latrines don't work (ehigh water table, collapsing/rocky soils).g<br>- Large scale nutrient recovery is a realistic possibility. faeces in the urine bowl<br>- Suitable for all types of users (sitters, squatters, washers, wipers) may deter others from accepting this type of toilet as well. Education | valign="top" |- Prefabricated models not available everywhere <br>- Requires training and demonstration projects are essential in achieving good acceptance to be used correctly <br>- Is prone to misuse and clogging with usersfaeces <br>- The excreta pile is visible <br>- More expensive that low-cost latrine options <br>- Men usually require a separate Urinal for optimum collection of urine <br>- Special child seats have to be provided to keep their urine and faeces separate. |}

==Maintenance=Appropriateness===A The UDDT is slightly more difficult simple to keep clean compared to other toilets because of both the lack of water design and the need to separate the solid faeces build, using such materials as concrete and liquid urinewire mesh or plastic. For cleaning, a damp cloth may The UDDT design can be used altered to wipe down suit the seat and the inner bowlsneeds of specific populations (i. Some toilets are easily removable and can be cleaned more thoroughlye. No design will work , smaller for everyone and thereforechildren, people who prefer to squat, some users may have difficulty separating both streams perfectly which may result in extra cleaning and maintenanceetc. )

Faeces can ===Health Aspects/Acceptance=== The UDDT is not intuitive or immediately obvious to some users. At first, users may be accidentally deposited hesitant about using it, and mistakes made (e.g., faeces in the urine section, causing blockages bowl) may deter others from accepting this type of toilet as well. Demonstration projects and cleaning problemstraining are essential to achieve good acceptance with users. As wellFor better acceptance of the system and to avoid urine in the faeces collection bowl, urine pipes/fittings the toilet can become blocked over time be combined with a Urinal (U.3), allowing men to stand and may require occasional maintenanceurinate.

This ===Operation & Maintenance=== A UDDT is a waterless technology slightly more difficult to keep clean compared to other toilets because of both the lack of water and water should not be poured down the toiletneed to separate the solid faeces and liquid urine. As wellNo design will work for everyone and, urine tends to rust most metals; therefore, metals should some users may have difficulty separating both streams perfectly, which may result in extra cleaning and maintenance. Faeces can be avoided for accidentally deposited in the construction urine section, causing blockages and piping of the UDDTcleaning problems.

* [http://www.sswm.info/sites/default/files/reference_attachments/technologyreviewofuddts18-june-2013-komplett.pdf Technology Review of Urine-diverting dry toilets (UDDTs) Overview of design, operation, management and costs] * [http://wiredspace.wits.ac.za/bitstream/handle/10539/11789/ARPL%207019%20-%20FINAL%20RESEARCH%20REPORT%20G%20MATSEBE%205%20DECEMBER%202011.pdf?sequence=1 PERCEPTIONS OF THE USERS OF URINE DIVERSION DRY (UDD) TOILETS IN MEDIUM DENSITY MIXED HOUSING IN HULL STREET, KIMBERLEY]. Johannesburg 2011.  * [http://web.archive.org/web/20150331190748/http://www.wsp.org/hwws-toolkit/hwws-tk-home Handwashing with Soap Toolkit] ===References == Manual =* Morgan, P. R. (2007). [http://www.ecosanres.org/pdf_files/ToiletsThatMakeCompost.pdf Toilets That Make Compost. Low-Cost, Sanitary Toilets That Produce Valuable Compost for Crops in an African Context]. Stockholm Environment Institute, Stockholm, SE. (Provides step- How by step instruction on how to build ==a UDDT using a plastic bucket and how to construct a urine-diverting squat plate) * Morgan, P. R. (2009). [http://www.ecosanres.org/pdf_files/EcologicalToilets-PeterMorgan-Mar2009.pdf Ecological Toilets. Start Simple and Upgrade from Arborloo to VIP]. Stockholm Environment Institute, Stockholm, SE. * von Münch, E. and Winker, M. (2011). [http://www.susana.org/_resources/documents/default/2-875-giz2011-en-technology-review-urine-diversion.pdf Technology Review of Urine Diversion Components. Overview of Urine Diversion Components Such as Waterless Urinals, Urine Diversion Toilets, Urine Storage and Reuse Systems]. Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, DE. * NWP (2006). [https://www.ircwash.org/resources/smart-sanitation-solutions-examples-innovative-low-cost-technologies-toilets-collection Smart Sanitation Solutions. Examples of Innovative, Low-Cost Technologies for Toilets, Collection, Transportation, Treatment and Use of Sanitation Products]. Netherlands Water Partnership, The Hague, NL. * Rieck, C., von Münch, E. and Hoffmann, H. (2012). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/874 Technology Review of Urine-Diverting Dry Toilets (UDDTs). Overview of Design, Operation, Management and Costs]. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, DE. * Winblad, U. and Simpson-Hébert, M. (Eds.) (2004). [http://www.ecosanres.org/pdf_files/Ecological_Sanitation_2004.pdf Ecological Sanitation]. Revised and Enlarged Edition. Stockholm Environment Institute, Stockholm, SE.

==References and external links==* Elizabeth Tilley et.al (2008). General information [http://www.eawagecosanres.ch/organisation/abteilungen/sandec/publikationen/publications_sesp/downloads_sesp/compendium_highorg www.ecosanres.pdf Compendium of Sanitation Systems and Technologiesorg] ( * General information [http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/publications_sesp/downloads_sesp/compendium_low.pdf low res version])ecosan. Department of Water and Sanitation in Development Countries ([http://nl www.sandececosan.ch/ Sandecnl]) at the Swiss Federal Institute of Aquatic Science and Technology (Eawag). (Provides a full overview of sanitation systems.)

* Morgan, P. (2007). South Africa [http://www.ecosanrescsir.org/toilets_that_make_compostco.htm Toilets That Make Compost: Low-cost, sanitary toilets that produce valuable compost for crops in an African context]za www. Stockholm Environment Institute, Swedencsir. (Provides step-by step instruction on how to build a UDDT using a plastic bucket and how to construct a urine diverting squat plateco.)za]

* Netherlands Water Partnership (NWP) (2006). Scope, India [http://www.ircscopetrichy.nlcom/pagepdf/28448 Smart Sanitation SolutionsUDDT_ECOSAN. Examples of innovative, low-cost technologies for toilets, collection, transportation, treatment and use of sanitation productspdf UDDT Ecosan]. NWP, Netherlands. (Provides country specific data and links for further information.)

* Winblad, U. and Simpson-Herbert, M. (2004). Ecological ===Acknowledgements==={{:Acknowledgements 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.)}}