Avaliação das condições de potabilidade da água dos poços do bairro 25 de Setembro e Samora Machel, na cidade Mocuba

Abstract

The use of water from the wells in some districts of the city of Mocuba has been frequent due to a lack of potable water supply. However in samples in good condition, fact taken to the study of analysis of potable water conditions of the wells in the neighborhoods of 25 de Setembro and Samora Machel, where samples were taken from three community wells without neighborhood September 25 and neighborhood 1 Samora Machel well community point calls Water Network. Chemical and biological non-laboratory parameters of the FIPAG of the city of Quelimane were analyzed. In order to perform the chemical analyzes for methods of methods 388N-free Ammonia, 361 N-Nitrate HR AV, 375N-Nitrite LR AV of the manual of the 900 HP photometer and titration with indicator for cloret analysis, for biological analysis was used Method of counting of through the use of the filter membrane. Through the interferences of the 4 wells and as well as of some chemical parameters such as chloride, ammonia, nitrate and nitrites are within the maximum admissible limits for the Water of consumption sources to the public consumption without treatment according to which is recommended not bulletin of the republic 2004 , with exception in the microbiological analyzes, demonstrated that the wells of all neighborhoods are contaminated by bacteria of the total coliforms group and well 1 and well 3 of the neighborhood 25 of September this one contaminated by E. coli group bacteria. Well 4 of the Samora Machel neighborhood is outside the admissible limits for calcium, pH, however the results obtained prove that a contamination by total coliforms in the waters is high. Meanwhile, the water from the wells of Samora Machel and September 25 districts is not in compliance due to contamination by bacteria.