When it’s dry outside, sewer pipes in Peachtree City do just fine, according to a monitoring study of the city sewer system performed by DWC Technologies.

But when it rains, there can be trouble in some areas, the study noted. Specifically, a three-inch rain storm can add 2 million gallons of water that sneaks into the sewer system.

The Spyglass Hill and Aberdeen Village areas were determined to be the most significant areas of concern in this regard, as they contributed approximately 43 percent of the “inflow and infiltration” although they encompassed just 19 percent of the area monitored in the study, the report stated.

The system also has wet weather capacity issues in the older Hip Pocket area of town and in the area of Falcon Field. In the Hip Pocket zone, water backed up above the crown of the pipe in some manholes during wet weather events.

That problem possibly could be solved with a pump station with increased capacity and hydraulic performance during wet weather conditions, the report noted.

Several areas including Hip Pocket and Morallion Hills also had problems with debris and silt, and the solution there will be going back frequently to clean those sewer pipes out, noted Peachtree City Water and Sewer Authority General Manager Larry Turner.

The authority tries to keep a velocity of two feet per second in sewer pipes to keep debris from setting out and causing blockages, Turner noted.

The authority will be working in the coming days to develop an action plan to address issues generated by the study, Turner noted.

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