000070836 001__ 70836
000070836 005__ 20190709135454.0
000070836 0247_ $$2doi$$a10.1016/j.scitotenv.2016.12.055
000070836 0248_ $$2sideral$$a98215
000070836 037__ $$aART-2017-98215
000070836 041__ $$aeng
000070836 100__ $$0(orcid)0000-0002-0308-1390$$aRamo, A.$$uUniversidad de Zaragoza
000070836 245__ $$aOccurrence of Cryptosporidium and Giardia in raw and finished drinking water in north-eastern Spain
000070836 260__ $$c2017
000070836 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070836 5203_ $$aThis paper collects the first large-sample-size study on the presence of Cryptosporidium oocysts and Giardia cysts in drinking water plants at the 20 most populated towns in Aragón (north-eastern Spain). Samples of influent raw water and effluent finished water were collected from each plant during different seasons and processed according to USEPA Method 1623. Cryptosporidium oocysts and Giardia cysts were detected in samples collected from 55% and 70% plants, respectively, with nine plants being positive for both protozoa and only four plants being negative over the study period. Both parasites were identified in the raw water throughout the year, with a lower frequency in autumn and a peak in winter, at a mean concentration of 67 ± 38 oocysts per 100 l and 125 ± 241 cysts per 100 l. The turbidity of raw water was not related to the presence or concentration of (oo)cysts, and the (oo)cyst removal efficiency was not related to the type of water treatment. One or both pathogens were identified in the finished water in 7 out of 11 plants with a conventional treatment process (coagulation, flocculation, sedimentation, filtration, and disinfection processes) compared to 4 out of 9 plants that did not apply one of the pre-chlorination treatment steps. Protozoa were detected in the finished water of positive plants at a mean concentration of 88 ± 55 oocysts per 100 l and 37 ± 41 cysts per 100 l, and most of them excluded propidium iodide so were considered potentially viable. The ubiquity of these parasites in the drinking water sources and the inefficiency of conventional water treatment in reducing/inactivating them may present a serious public health issue in this geographical area.
000070836 536__ $$9info:eu-repo/grantAgreement/ES/DGA/B82$$9info:eu-repo/grantAgreement/ES/MINECO/AGL2012-32138
000070836 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000070836 590__ $$a4.61$$b2017
000070836 591__ $$aENVIRONMENTAL SCIENCES$$b27 / 241 = 0.112$$c2017$$dQ1$$eT1
000070836 592__ $$a1.546$$b2017
000070836 593__ $$aEnvironmental Chemistry$$c2017$$dQ1
000070836 593__ $$aWaste Management and Disposal$$c2017$$dQ1
000070836 593__ $$aPollution$$c2017$$dQ1
000070836 593__ $$aEnvironmental Engineering$$c2017$$dQ1
000070836 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000070836 700__ $$0(orcid)0000-0002-9453-7655$$aDel Cacho, E.$$uUniversidad de Zaragoza
000070836 700__ $$0(orcid)0000-0002-3532-0384$$aSánchez-Acedo, C.$$uUniversidad de Zaragoza
000070836 700__ $$0(orcid)0000-0001-7831-2483$$aQuílez, J.$$uUniversidad de Zaragoza
000070836 7102_ $$11009$$2773$$aUniversidad de Zaragoza$$bDpto. Patología Animal$$cÁrea Sanidad Animal
000070836 7102_ $$15005$$2X$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Administrativa
000070836 773__ $$g580 (2017), 1007-1013$$pSci. total environ.$$tScience of the Total Environment$$x0048-9697
000070836 8564_ $$s217570$$uhttps://zaguan.unizar.es/record/70836/files/texto_completo.pdf$$yPostprint
000070836 8564_ $$s28723$$uhttps://zaguan.unizar.es/record/70836/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000070836 909CO $$ooai:zaguan.unizar.es:70836$$particulos$$pdriver
000070836 951__ $$a2019-07-09-11:42:20
000070836 980__ $$aARTICLE