Niagara Falls Combined Sewer Overflows at Niagara Region Facilities

Data presented here is updated every three months. The data contains records from
September 01, 2017 to August 31, 2018.

CSO Location Date of OverflowVolumeReason for Overflow
Dorchester Rd SPS
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Aug 21, 20180.139 Heavy Precipitation
Muddy Run SPS
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Aug 21, 2018N/A Heavy Precipitation
Niagara Falls Plant
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Aug 21, 20183.252 Heavy Precipitation
Drummond SPS
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Aug 21, 20180.438 Heavy Precipitation
Niagara Falls Plant
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Aug 21, 20188.762 Heavy Precipitation
Niagara Falls Plant
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Aug 18, 20181.371 Heavy Precipitation
Niagara Falls Plant
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Aug 18, 20185.419 Heavy Precipitation
Muddy Run SPS
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Aug 18, 2018N/A Heavy Precipitation
Seneca St SPS
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Aug 18, 2018N/A Heavy Precipitation
Niagara Falls Plant
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Aug 7, 20180.002 Heavy Precipitation
More

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

Historical Overflow Data for Niagara Falls

201720162015
Total Overflows: 128
Total Volume: 834.104
Total Overflows: 48
Total Volume: 111.658
Total Overflows: 73
Total Volume: 337.507

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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