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Adverse Water Quality Incident Report

Location:
The Township of Atikokan

Incident Resolution:
Following the repair of the watermain break and the results of bacteriological sampling, on April 4, 2007, the Northwestern Health Unit was satisfied that the drinking water system was capable of providing safe potable water and therefore rescinded the Boil Water Advisory.

Type of water source:
Surface

Population served:
Approximately 3800

Water works owned/operated by:
The Township of Atikokan

Date MOE notified and by whom:
March 25, 2007, by the Township of Atikokan and the Ontario Clean Water Agency

Date MOH notified and by whom:
March  25, 2007, by the Township of Atikokan and the Ontario Clean Water Agency

Date of First Sample(s):
N/A

Who conducted the sampling?:
N/A

Why was sampling initiated?:
N/A

Sample contaminant details:
N/A

Resampling details and results:
Following the completion of the work, the chlorine residual was increased and the system flushed.  Two consecutive samples did not indicate microbiological contamination.

MOE Role:
Ministry staff worked closely with the owner of the system and the local Health Unit to protect public health, and to ensure that a safe potable water supply is maintained for the users of this water system.

Background (if there is a history of the site):
On March 25, 2007, a Boil Water Advisory (BWA) was issued by the
Northwestern Health Unit to the Township of Atikokan, after a
watermain break in the distribution system required that sections of watermains be isolated to determine the location of the break.