Maia, Adelena GonçalvesMoura, Renata Ferreira2017-12-272021-09-202017-12-272021-09-202017-11-10ANA – Agência Nacional de Águas. Portal de qualidade das águas. Rede Nacional – Rede de Monitoramento. Disponível em: <http://portalpnqa.ana.gov.br/rede-nacional-rede-monitoramento.aspx>. Acessado em: 18 mai 2016. ANA – Agência Nacional de Águas. Portal de qualidade das águas. Região Hidrográfica do Atlântico Nordeste Oriental. Disponível em: <http://www2.ana.gov.br/Paginas/portais/bacias/AtlanticoNordesteOriental.aspx>. Acessado em: 20 mai 2016. BRASIL. Ministério da saúde. Secretaria de vigilâncias em saúde. Vigilância e controle da qualidade da água para consumo humano. Brasília, 2006. BRASIL. Ministério da saúde. Portaria nº 2914/2011. Dispõe sobre os procedimentos de controle e de vigilância da qualidade da água para consumo humano e seu padrão de potabilidade. Brasília, 2011. DI BERNARDO, L.; PAZ, L.P.S. Seleção de Tecnologias de Tratamento de Água. Editora LDIBE LTDA. São Carlos, 2008 DIAS, C. L.; BARBOUR, E. D. A.; MODESTO, R. P.; CASARINI, D. C. P. A importância do monitoramento das águas subterrâneas na gestão dos recursos hídricos. XV Congresso Brasileiro das águas subterrâneas. São Paulo, 2008. FAROOQ, S.; HASHMI, I.; QAZI, I. A.; QAISER, S.; RASHEED, S. Monitoring of Coliforms and chlorine residual in water distribution network of Rawalpindi. Paquistão, 2008. FERNANDES, N. C. Determinação do índice de qualidade da água tratada distribuída aos municípios do Estado de Goiás. Tese de mestrado. Universidade Federal de Goiás. Escola de Engenharia Civil. Goiânia – Goiás. 2013. IBGE. Instituto Brasileiro de Geografia e Estatística. Semiárido Brasileiro. Disponível em: <https://www.ibge.gov.br/geociencias-novoportal/cartas-e-mapas/mapas-regionais/15974-semiarido-brasileiro.html>. Acessado em: 20 mai 2017. KIRMEYER, G. FRIEDMAN, M. MARTEL, K. SANDVIG, A. Guidance Manual for Monitoring Distribution System Water Quality. Spring, 2002. LIBÂNIO, M. Fundamentos de qualidade e Tratamento da água. Campinas, SP. Editora Átomo, 2010. LYNCH, M. J.; STRETESKY, P. B. The distribution of water-monitoring organizations across states. Policing: An International Journal of Police Strategies & Management. Colorado, EUA, 2013. SALDARRIAGA, J.G., HERNÁNDEZ, M.X., PRIETO, C., JURADO, M., GACHARNÁ, S. & PÁEZ, D. Localización de puntos de monitoreo de calidad de agua en sistemas de distribución. Tecnología y Ciencias del Agua. Colômbia, 2014. SANEAGO – Companhia de Saneamento de Goiás. Índice de Qualidade de Água. Disponível em: <http://www.saneago.com.br/2016/#home>. Acessado em: 20 dez 2016.https://repositorio.ufrn.br/handle/123456789/37019The monitoring and evaluation of treated water quality is a practice that demands time and assiduity, associated with large volume of data generated by the physical, chemical and biological parameters analyzed. The objective of this paper is to evaluate if the deterioration of the quality of raw water in relation to the volume reduction of the sources that supply the region of Seridó, and the quality of the treated water by monitoring the parameters selected from the Ministerial Order no. 2914/2011 health and using the WQI. In order to objectively demonstrate water quality results, to express a single value, we use the Water Quality Index (WQI). To begin the history of the quality of the water treated by the state sanitation company of the 23 cities of the Seridó Region of Rio Grande do Norte, this work investigated data associated with the physical, chemical and microbiological parameters of the semester analyzes carried out in each city in the water sources supply and on the removal of WTP treatment. The determination of the WQI was done using the method developed by SANEGO - Companhia de Saneamento de Goiás, in samples of treated water collected during 24 months, divided into 2 semiannual collections per year and the results were classified by the WQI-NFS method. The evaluation allowed to conclude that the WQI of the samples classified as excellent and good were 32%, in 2015.2, it remained at 32%, in 2016,1 reduced to 14%, and in 2016.2 it increased to 31%, which shows the depletion of quality from 2015 to 2016 due to the drought and only improved in 2016.2 with increased rainfall compared to previous periods. The results demonstrate that when the capture is from water well or when the system has a conventional treatment system, the WQI tends to present excellent or good results, whereas the plants of treatment of direct filtration water present medium and bad results during periods of drought.openAccessAttribution 3.0https://creativecommons.org/licenses/by/3.0/MonitoramentoIQAETAbachelorThesis