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Utility answers safety and frequency questions; operators will control pressure and recommend precautions
Summary
Jason White said operators can control injection pressure and do not anticipate main breaks across pipe materials in the system; Brewster’s case study suggested multiple years of relief after the work, but exact recurrence intervals were not specified.
During resident Q&A, Olympic Water & Sewer addressed concerns about pressure, pipe breakage and how often ice pigging will be needed.
White said the contractor’s supervisor (Shane Garner) can control pressure as ice is fed into the mains and that, across the village’s mix of asbestos‑cement, cast iron and C900 PVC pipe, case studies and the contractor’s experience indicate the process is safe and main breaks are not anticipated. "We should not see any spikes in water pressure beyond what our normal operating ranges are," White said.
On frequency, White cited Brewster, Washington’s experience: Brewster had roughly five years without requiring another ice pigging push. White said that, with improved wellhead treatment, the village hopes to get many years of relief but could not give an exact interval. He also advised residents to turn off irrigation timers or shut off at the backflow assembly to avoid sprinkling salty water onto lawns during pushes.
