The Santiago Water and Sewer Corporation (Coraasan) has addressed sewer issues in several neighborhoods in the city, including La Cienega, Las Colinas, Tierra Alta and los Robles. The repairs required several hundred meters of smaller diameter tubing and pipes be replaced with much larger piping some of which was 30 inches in diameter. In sectors such as Villa Maria, a partial collapse of the sewer system was repaired and exclusive areas such as Los Samanes, Villa Maria, Samanes Residence, Los Laureles and Monte Adentro now have more efficient sewage disposal.
The city agency also told reporters of El Nacional newspaper that they are working on the cleanup of the outer Arroyo Gurabo in the southern part of the city near the Palace of Justice.
Because of the rains late last year, there are large deposits of sediment and solid waste along the Arroyo that impede the access to the water treatment plant at Rafey. As the first municipal aqueduct management group outside of Santo Domingo, Coraasan provides water to much of the province of Santiago as well as the city of Moca.
23 February 2017