When ground water and stormwater enter the municipal sanitary sewer collection system – known as inflow and infiltration (I&I) – treatment systems become less efficient and strained. This additional water costs the municipality and its users in the end.
What is inflow and infiltration?
Inflow is storm water that enters the sewer system from storm drain connections, roof leaders, sump pumps or through manhole covers.
Infiltration – not directly connected – water that enters the sewer system through leaking joints, cracks and breaks, or porous walls.
How does inflow and infiltration add costs?
I&I water is referred to as “clear water”, distinguishing it from sanitary sewage water. When clear water gets into the wastewater collection system, it gets treated. And when it gets treated it costs money. It also takes up valuable capacity at our wastewater treatment facilities.
The Township has to decide between investing dollars to reduce inflow and infiltration or limiting growth.
Current inspection and repair work projects |
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Wessuc Inc. will be conducting CCTV inspections of all mainline sewers within sewer catchment area #1 in Lagoon City in August, 2024. The purpose of CCTV inspections is to identify the source of I&I into the wastewater system. The outcome of the field investigation will inform recommendations for remediation. |
What to expect when inflow and infiltration inspection or repair work is happening in your neighbourhood |
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CCTV (Closed Circuit Television) is a non-intrusive method of inspecting pipes and sewers. It involves using a camera to inspect the inside of sewer mains. An inspector will gain access to the sewer main through a manhole on the street. No road closures will occur. Inspections will not cause any disruption of your sewer service. In some cases, the sewer main may need to be flushed clean before inspections take place. Visit the Sewer Main Flushing Program page for more information on what to do before flushing occurs. Once a source of inflow or infiltration has been found, repair projects may include:
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What is Township of Ramara doing about inflow and infiltration |
| Finding and reducing inflow and infiltration is a priority. The Township has implemented an I&I reduction strategy which includes annual field investigations to identify sources of I&I. Once a source of I&I has been found, repairs will be prioritized based on the severity and frequency of the defect. |
Sump pumps – make the right connection!
Sump pumps cannot be connected into the sanitary sewer system. These connections are in violation of Ramara's Sewer Use Bylaw and it could result in your basement flooding with sewage.
Please make the right connection to protect your home and the municipal sanitary sewer system.
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