Case Study: Smoker Reveals I&I Source

Case Study: Smoker Reveals I&I Source
When utility managers in Freeman, South Dakota, couldn't locate the source of an I&I problem, South Dakota Rural Water hooked up a Hurco Power Smoker 2 and found several abandoned and uncapped sewer connections.

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Utility managers in Freeman, South Dakota, were experiencing backup issues in their sewer system during heavy spring rains and couldn’t find the exact location of the problem. They were fairly certain of the general area, but were unable to pinpoint the locations and stop the overflow. 

The water infiltrating into the sewer system was overwhelming lift stations and the wastewater treatment system, as well as depositing debris in the pipe that required cleaning. 

South Dakota Rural Water was hired to perform a smoke test with the Hurco Power Smoker, but testing the sewer lines wasn’t revealing the source of the infiltration. Having the location narrowed down to a field, they found an old building sewer clean-out. Since the clean-out was only a 4-inch line, they were unable to do the smoke test using the standard smoker for sewer main testing. 

SDRW used its Hurco Power Smoker 2, which is typically used in plumbing systems, and was able to easily connect to the 4-inch clean-out. 

After a couple minutes setting up for the test, smoke immediately appeared in several locations, revealing multiple uncapped sewer connections from an abandoned mobile home park. The city was able to quickly mark all of the leak locations and get them properly capped off to prevent further damage and issues caused by the heavy infiltration. 800/888-1436; www.hurcotech.com.



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