Unfinished and poorly executed works, lack of maintenance of the drainage network, and large amounts of garbage that citizens leave on the public highway are the main causes of flooding in the streets, avenues, and federal roads if Oaxaca.
On federal highway 190, the sewage system is collapsed by a large amount of garbage, which generates huge flooding, mainly the sections of Hacienda Blanca, Viguera, Pueblo Nuevo, Santa Rosa Panzacola and Ixcotel.
With the partly constructed failed project of the new transportation system known as SitiOax, citizens have also used the site as a garbage dump.
Given the abandonment of the project, people without environmental education place their waste in these areas, generating enormous environmental pollution and flooding.
The garbage is dragged by the rainwater and, subsequently, generates blockages in the sewage system of the city of Oaxaca and surrounding municipalities.
During the first rains at the beginning of the rainy season, floods were also reported on Avenida Monte Albán in San Martín Montoya, as well as on Riberas del Río Atoyac in the jurisdiction of San Jacinto Amilpas.
One of the sewers with the largest amount of accumulated garbage is located in 190, at the height of the Cuauhtémoc colony in Santa Rosa Panzacola, where the drains are blocked from plastic bags that are abandoned on public roads.
Coming into the rainy season and summer months, stagnant water also contributes to mosquito breeding and the spread of illnesses.