Grimsby Combined Sewer Overflows at Niagara Region Facilities

Data presented here is updated every three months. The data contains records from
July 01, 2016 to June 30, 2017.

CSO Location Date of OverflowVolumeReason for Overflow
Old Orchard SPS
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Jun 23, 2017N/A Heavy Precipitation
Woodsview SPS
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Jun 23, 2017N/A Heavy Precipitation
Baker Road Plant
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May 25, 20173.272 Heavy Precipitation
Biggar Lagoon CSO SPS
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May 25, 2017N/A Heavy Precipitation
Grimsby Works Yard CSO
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May 25, 20172.882 Heavy Precipitation
Old Orchard SPS
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May 25, 2017N/A Heavy Precipitation
Woodsview SPS
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May 25, 2017N/A Heavy Precipitation
Biggar Lagoon CSO SPS
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May 5, 2017N/A Heavy Precipitation
Old Orchard SPS
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May 5, 2017N/A Exceed Design
Woodsview SPS
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May 5, 2017N/A Heavy Precipitation
More

Volume is measured in megalitres. (1 megalitre = 1 million litres)

Historical Overflow Data for Grimsby

201620152014
Total Overflows: 11
Total Volume: 9.925
Total Overflows: 6
Total Volume: 1.303
Total Overflows: 6
Total Volume: 8.607

Overflows contain mostly Storm Water

While the volume of an overflow may seem large, the amount of untreated sewage present in the overflow is small when compared to the amount of stormwater or snow melt.

Niagara typically treats about 80,000 megalitres of sewage each year.  The vast majority of wastewater discharged into the sewer system receives full treatment and only a small percentage of this sewage overflows. These overflows usually only occur during periods of heavy rain or during seasonal snow melts.

Historical Data

If you require more detailed information about a specific combined sewage overflow, you can contact the water & wastewater division.


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