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Water Today Title March 20, 2018

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Asvisory of the Day



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Ville Sainte-Marie issued a Boil Water Advisory for its residents yesterday. The reason given in the notice posted on town's website was "unacceptable test results." The advisory does not apply the entire territory of Ville Sainte-Marie, a perimeter inside the city is not affected by the test results and advisory.

Maude-Emmanuel Drouin, Supervisor of Water and Municipal Building Engineering Services, confirmed "analysis of one of the three samples taken during the weekly tour demonstrated the presence of E. coli." She added "the other two samples taken at the end of the network that was analyzed, show us that the water in the network at these locations is free of bacteria." Drouin suggested that "there is every reason to believe that this result obtained at the town hall is due to a manipulation error during sampling or in the laboratory."

"Since the health of the population is paramount and the city does not want to take any chances, an advisory was issued as soon as the results we received the results from the laboratory," Drouin said.

The reason the sector an area of the city was not affected by the BWA is because "there are two levels of pressure in the City of Sainte-Marie, one gravity and one overpressure." The unaffected area is serviced by the overpressure system which did not return unacceptable test results." Drouin said that the two systems use a separate pipe system "thus it is impossible for the water in the gravity network to interfere with the overpressure network."

When the presence of E. coli was detected in the samples yesterday, "a series of 10 additional tests were carried out on the gravity network and sent to the laboratory," Drouin said. Another series of 10 was taken this morning. Receipt of the results from the last round of tests is expected by "noon tomorrow at the latest." If results are acceptable the anticipated removal of the BWA should be early afternoon tomorrow.

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