system generating an efficient aqueduct. The sewage system has weaknesses, as some sectors do not have networks, providing their discharges directly to water sources, many places have community septic tanks; however urban streams have an unfortunate quality; highlighting the stream Agüitas Claras, passing northwest of the city and also has its birth in the same, between sectors of El Hoyo, the 33 and Villa Cruz. This stream has its natural source in the call stream Vinagrera and Caño El Hoyo, run by sectors of 33, El Hoyo, La Quinta, Boston, Tuberías, among others, and is the recipient of 55% of water waste of urban seat of Santa Rosa, without treatment, taking them with it to the Bramadora stream and this in turn the Grande river. The remaining 45% goes to the basin of the Guadalupe River, where 12% falls to stream the Portal which flows into the stream San Jose in the south of the city without treatment and the other 33% directly down the Guadalupe River between Variant sectors, Barro Blanco, Los Chorros and El Turco. Part of the water discharged to the Guadalupe River are conducted by a collector that leads to the plant wastewater treatment Turco, which operates under the acceptable levels of pollution required by the standard, but that still leaves visibly affected the river . The districts and some rural villages each have their community service aqueduct, which is administered by the various community associations, basic sanitation is provided by the mayor, most septic tanks that meet quality standards. Some farms make use of water concessions or craft deposits of the various streams for domestic consumption. Demography 'Total Population' : 36 103 hab. (2016) 'Urban Population' : 19 012 'Rural Population' : 17 091 'Literacy' : 91.3% (2005) 'Urban area' : 94.3% 'Rural area' '': 88.5% Ethnography According to the figures presented by DANE of the census 2005, the composition ethnographic of the municipality is: Mestizos & whites (84,0%) Afro-Colombians (16,0%) Political geography The municipality owns 5 official districts, Aragon, Hoyorrico, San Pablo, Riogrande and San Isidro. For its part, the Town known as Caney is waiting for the update of the municipal PBOT that is currently developed and would legally give the title Of district. The municipality has more than 72 rural Villages. Communications: It is communicated by road with the municipalities of Yarumal, Angostura, Carolina, Donmatías, Entrerríos and San José de la Montaña.