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Known as “ice pigging,” the process injects an ice slurry into a water line through a city fire hydrant, pushing the slurry through the line only to exit through a different fire hydrant. This process has the potential to fully clean a water line. St. Cloud learned about and investigated ice pigging after it was used successfully by neighboring Orange County Utilities. This new step comes after installation last December of two new polishing filters at Water Treatment Plant No. 4. The filters went online in December and are working properly and creating clean water. Turbidity, clarity of the finished water, has improved significantly with the new polishers. Meanwhile, filter optimization and backwashing sequences continue as part of the process. However, resin particles that were lost to the system from the previous failed polishers remain in the system and continue to impact residents in their homes. Environmental Utilities has completed two cycles of unidirectional flushing through the areas most impacted by discolored water and sediment. While this process has shown positive results in removing large amounts of sediment and discoloration, it has not significantly improved the overall water quality in the affected areas. The City is evaluating the unidirectional flushing process to improve outcomes from this process. The City Council approved $407,000 for the ice pigging initiative with monies in the utilities budget. Residents will see no rate changes as a result of this issue. The ice pigging, which is expected to begin in early February and take about five weeks, will target the areas affected most by this issue, which equates to about 27.5 miles of water line. As stated earlier, the City is keenly aware of the inconvenience and unpleasant nature of this issue. Our intent is that this high technology process will substantially improve the water quality and significantly reduce the incident’s of discolored water.