It wasn't raining Tuesday afternoon inside the St. Johns Street Shoppers Drug Mart, but it probably looked like it had.
City and fire crews were called to the store around 4: 30 p.m. that day, to help deal with a significant water leak inside the building.
Gord Parker, deputy fire chief with Port Moody FireRescue, said a pipe leading to the building somehow broke.
The cause of the leak has not been determined, but the break in the line sent a torrent of water, silt and mud rushing through the store.
Fire crews stayed on scene to vacuum and help with some of the cleanup, but the store remained closed for the rest of night.
There was no word on how much damage the incident caused to the store.
City crews were able to determine the leak occurred on the building side of the property and any repairs would be the owner's responsibility.
Parker noted the fire department is called out to a few similar types of leaks each year.
No one was reported injured during the incident.