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Flood PreventionAugust 2, 20265 min read

5 Signs Your Weeping Tile Is Still Connected to the Sewer

There is no way to know by looking. But these five things make it likely — and they are the same five that make you eligible for funding.

CCTV drain camera inspecting a foundation drain connection

If your weeping tile drains into the sanitary sewer, you are both more likely to flood and more likely to qualify for a rebate that pays for fixing it. The problem is that there is no way to know by looking at your basement.

These five signs make it likely.

1. The house was built before the 1980s

Connecting foundation drains to the sanitary lateral was standard practice for decades. If your home predates roughly 1980 and has not been re-plumbed, the odds are meaningful. Most rebate programmes here use a pre-2012 build date as their eligibility line, which tells you where municipalities think the problem sits.

2. You have no sump pump — and never have

Groundwater collected by a weeping tile has to go somewhere. If there is no sump pit in your basement floor and no evidence there ever was one, the water is draining somewhere by gravity. That somewhere is usually the sanitary lateral.

3. Your floor drain backs up during heavy rain

This is the clearest behavioural sign. If water comes up through a basement floor drain during a storm, the sewer is surcharging and pushing back into your line. Homes whose weeping tiles feed that same system contribute to the surcharge and sit closest to it.

4. Neighbours on the same street have flooded

Sewer surcharging is a street-level problem, not a house-level one. Housing stock of the same era on the same sewer usually shares the same plumbing arrangement. If two or three neighbours have had backups, that is information about your house too.

5. There is an exterior building trap

Older properties sometimes have a trap on the sewer line outside the foundation wall. It signals an older drainage arrangement generally, and where a backwater valve is being installed it usually has to come out first.

The only way to actually know

A CCTV camera inspection. A plumber runs a camera down the drain and looks at where the foundation drain ties in. It takes minutes and it is definitive.

Worth knowing: in several programmes that inspection is an eligible cost. Halton names CCTV inspections and plumbing assessments as covered. St. Catharines covers your contractor's initial assessment. So finding out need not come out of your pocket if you proceed.

If it turns out your weeping tile is on the sewer, you are near the front of the queue for funding almost everywhere in this region.

Want it checked properly? Book a consultation call: 647 206 3327

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