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Utility staff: sewer overflows down sharply after asset-management, pipe-rehab and modeling efforts
Summary
A utility staff member said sewer overflows have fallen about 90% over two decades and about 60% over five years, crediting an asset-management program, targeted pipe rehabilitation using epoxy liners, and computer modeling of the collection system.
A utility staff member said at a briefing that sewer overflows have fallen roughly 90% over the last 20 years, about 60% over the last five years and from about 100 overflows last year to about 50 so far this year.
The staff member attributed the reductions to the utility’s asset management program, a strategy that ties every capital project to measurable system performance, and to targeted rehabilitation methods rather than always upsizing pipes. "Reducing sewer overflows is…
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