Is Your Underground Garage Prepared for the Upcoming Thaw?
Simple Steps to Manage Flood Risk and Prevent Costly Water Damage
February in the GTA is never predictable. One day it’s -15°C, the next it’s +5°C and pouring rain.
As a property manager, the visible issues usually take priority, such as the salt stains in the lobby or the slush on the ramp. But beneath the surface, a silent problem is building. One that often goes unnoticed until it’s too late: Your catch basins.
Every sanding truck that drives through the underground garage leaves grit behind. When the snow melts, that grit doesn’t disappear, it flows straight into the drains. If those drains haven’t been serviced recently, one heavy rainfall could be enough to flood the garage.
Here’s why your drains need attention now, not in April.
The “Sand Trap” Reality
Catch basins are built with a sump, a deep pit at the bottom designed to trap heavy debris like sand, gravel, and small objects before water flows out through the outlet pipe. During a typical Toronto winter, sanding trucks spread tons of aggregate for traction. Unlike salt, sand does not dissolve. It sinks.
Once that sediment pile reaches the height of the outlet pipe, the water has nowhere to go. This is what we call the Danger Zone. It backs up onto the concrete floor, and at that point, even moderate rain or a rapid thaw can overwhelm the system.
A Shovel Can’t Fix This
We often see on-site maintenance teams clearing the grates of leaves and garbage. While that helps surface flow, it does nothing for the sludge hidden underground.
If the sump is full, the drain is effectively corked. This isn’t something a pressure washer or shovel can fix. The compacted sand, grit, and greasy water at the bottom of a catch basin requires industrial-grade vac extraction.
Salt + Standing Water = Structure Damage
When drains back up, they leave pools of water heavily concentrated with road salt, called brine.
How MJW Team Defends Your Drains
We don’t just rinse, we extract. Our fleet is equipped with industrial vacuum trucks designed specifically for the job.
- 1Assessment: We check sediment levels in your catch basins.
- 2Extraction: We vacuum out the sludge, sand, trash, and greasy water.
- 3Flush: We jet the lines to ensure flow is restored.
- 4Disposal: We transport the waste to authorized disposal facilities (so you stay compliant with environmental regulations).
A scheduled maintenance visit is always cheaper than an emergency flood call on a Sunday night.
Don’t wait for the water to rise, check your catch basins this week. If you can see sediment near the top, contact us right away.
