Cuve 4. 4.1 tte 7 Oues t Sang 3. 5 ha 7 Liko 0 0 uala Braz 48 26.7 zavill .1 e Point 37 41.6 e.8 Noir e Source: DCAT-II 0.4 0 5.3 23.5 4.9 0. 2 42.9 19.9 36. 6 0. 4 0. 3 57. 2 0.3 11 12.7 30.7 3.3 66.7 1.5 0.5 9.6 38.5 0.7 49.3 7.6 31. 6 43 4.4 0.2 8.05 3.5 0.3 3. 5 95.2 0.5 3.5 0. 3 0. 2 0. 1 0 0 0. 1 0 33. 4 50. 8 4.7 3 0.7 2.9 9.2 1.4 9. 2 98.1 0.7 0 0. 1 1. 1 0 0. 6 1.9 In almost all cases (90%), households do not use any water treatment means. Only 7% use an appropriate method of water treatment, largely adding bleach / chlorine water (5%): this varies from 6% in rural areas to 4% in urban areas. Types of toilets Improper disposal of human feces is associated with an increased risk of contracting diseases including diarrheal diseases and polio. The sanitary facilities that are considered adequate are toilets with flush connected to a sewage system or septic tank, improved ventilated pit latrines, privy pits with slab and composting toilets. To be considered as improved, only members of the household should use these types of toilets. Table 18: Types of toilets used (percentage) Types Unshared improved Toilets Shared Toilet improved Unimproved Toilets Total Source: 201162012 DCAT Urban 15.2 43.5 41.3 100 Rural 4.7 7.6 87.7 100 All 11.3 30.3 58.4 100 The results of the DCAT-II show that 11.3% of Congolese households use unshared improved toilets. The use of this type of toilet is three times higher in urban areas (15.2%) than in rural areas (4.7%). Furthermore, in 30.3% of cases, households use toilets that would be considered improved if they were not shared. This proportion varies from 43.5% in urban areas to 7.6% in rural areas. Concerning unimproved toilet, we see that they are used by 58.4% of households, mainly rural households (87.7%), which increases the risk of diarrheal disease and does not lead to the decrease of the prevalence, especially among children under five. Compared to the previous 2005 survey, there is practically no change seen the proportion of households using a flush toilet has not changed (5% in both surveys) and households that have no type of toilet remained almost stable from 10% in 2005 to 9% in 2011-2012. 77