Hamilton Water in the industrial city of Hamilton, Ontario, treats over 342 billion gallons of wastewater per year. But the system that conveys all that wastewater is more than 150 years old.The city’s overall sewer system has about 1,948 miles of pipes split nearly equally between wastewater and stormwater pipe, with another 19% of the system combined.“The earliest sewer pipes were laid in 1859, and we had one of the earliest wastewater treatment plants here in Canada dating back to the late 1800s,” says Nick Winters, director of Hamilton Water.This being the case, the documentation of this historic sewer system
