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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Land use associated with Cryptosporidium sp. and Giardia sp.in surface water supply in the state of Sao Paulo, Brazil

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Author(s):
Breternitz, Bruna Suellen [1, 2] ; Barbosa da Veiga, Denise Piccirillo [1, 2] ; Pepe Razzolini, Maria Tereza [1, 2] ; Nardocci, Adelaide Cassia [1, 2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sch Publ Hlth, Av Dr Arnaldo 715, 1 Floor, BR-01246904 Sao Paulo - Brazil
[2] NARA Ctr Res Environm Risk Assessment, Av Dr Arnaldo 715, 1 Floor, BR-01246904 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Environmental Pollution; v. 266, n. 3 NOV 2020.
Web of Science Citations: 0
Abstract

Land use/Land cover (LULC) associated with Cryptosporidium sp. and Giardia sp. quantification and distribution can provide identification of the environmental circulation patterns of these parasites. The aim of this research was to relate the occurrence and circulation of these parasites to the LULC watershed with poor sanitation infrastructure and livestock as important economic activity. The study involved 11 municipalities in the state of Sao Paulo, located in southeastern Brazil. Sampling was carried out at the catchment sites of each water supply on a monthly basis, starting in December 2014 and lasting until November 2015, totalizing 128 samples. Protozoans were quantified according to the 1623.1 US. EPA Method. For watershed delimitation, the hydrographic network was extracted from the hydrology tool of ArcGIS 10.1. The frequency of occurrence of these pathogens and the high concentrations were evidenced in the municipality with the largest urban area (16.2%) and intense livestock activity (39%) near the catchment site. The municipality that showed the lowest frequency of occurrence presented the smallest urban area (0.87%) and absence of livestock activity near the catchment site. The high concentration of pathogens suggests a correlation between the impact on water supply networks and river basin degradation caused by urban activity and livestock. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/50016-3 - Assessment of pesticide residues and pathogenic protozoa in public water supplies in the State of São Paulo
Grantee:Adelaide Cassia Nardocci
Support type: Research Grants - Research in Public Policies for the National Health Care System (PP-SUS)