Local authorities have little regard for their prerogatives, which oblige them to guarantee access to water, electricity and garbage collection to people living in slums on their territory. According to the 2015 evaluation report of the National Health Mediation Program, more than half of the places where the mediators intervened were affected by high levels of insalubrity:
- Absence of rubbish bins and garbage collection (96%)
- Places of life with a presence of "enormously" or "a lot” of refuse (70%).
- Presence of pests in 81% of the sites to the knowledge of mediators,
- More than half of the sites do not have access to toilets (60%)
Promiscuity in habitat, living conditions and migratory pathways are factors that increase the risk of transmission of epidemic-prone diseases such as tuberculosis.
The age of the squats and the pollution of the soils on which slums are installed pose risks of exposure to lead. The presence of old peeling paintings and ironwork at places of life suggest that some residents may be affected by lead poisoning.
- Instability of the places of life, factor of anxiety and demobilization :