Niagara Falls Combined Sewer Overflows at Niagara Region Facilities

Data presented here is updated every three months. The data contains records from
April 01, 2022 to March 31, 2023.

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

CSO Location Date of Overflow Volume (ML) Reason for Overflow
Niagara Falls Plant
[map it ] 		Mar 25, 2023 2.535 ML Heavy Precipitation
Niagara Falls Plant
[map it ] 		Mar 17, 2023 10.880 ML Heavy Precipitation
Snow Melt
S.S. High Lift SPS
[map it ] 		Mar 17, 2023 1.987 ML Heavy Precipitation
Snow Melt
Niagara Falls Plant
[map it ] 		Mar 17, 2023 1.090 ML Heavy Precipitation
Snow Melt
Dorchester Rd SPS
[map it ] 		Mar 17, 2023 0.597 ML Heavy Precipitation
Snow Melt
S.S. High Lift SPS
[map it ] 		Mar 5, 2023 0.002 ML Snow Melt
Niagara Falls Plant
[map it ] 		Mar 5, 2023 6.230 ML Snow Melt
S.S. High Lift SPS
[map it ] 		Mar 3, 2023 3.843 ML Heavy Precipitation
Niagara Falls Plant
[map it ] 		Mar 3, 2023 0.212 ML Heavy Precipitation
Muddy Run SPS
[map it ] 		Mar 3, 2023 0.331 ML Heavy Precipitation
More

Historical Overflow Data for Niagara Falls

202220212020
Total Overflows: 87
Total Volume: 324.779 ML 		Total Overflows: 137
Total Volume: 316.333 ML 		Total Overflows: 67
Total Volume: 127.594 ML

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.

Page Feedback Did you find what you were looking for today?