The municipal swimming pool in Tracy, Minn., was losing hundreds of gallons of water per day. When a local contractor televised the pool’s 6-inch drain line, he found multiple, severe cracks in the two-year-old Schedule 40 PVC pipe.Looking at the damage, Paul Desmith, a Public Works technician, remembered questioning the rationale when told by the pool builder that it didn’t need winterizing. What he saw on the video was clearly the work of ice.Two contractors tried to repair the 90-foot drain line using pulled-in-place liner systems, but the material hung up on seven tight 90-degree bends. Both repairs were aborted
