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Board approves $268,000 for sewer relining in I&I Phase 2
Summary
The New Canaan Board of Selectmen unanimously approved two Insituform contracts totaling roughly $268,000 to reline town sewer pipes as part of its inflow and infiltration (I&I) Phase 2 remediation, work officials say should extend pipe life by decades and reduce stormwater entry to the sanitary system.
The Board of Selectmen voted unanimously Aug. 4 to authorize two contracts with Insituform Technologies to reline town sanitary sewer pipes as part of the I&I Phase 2 remediation.
Public Works staff said the first contract covers relining approximately 985 feet of 8‑inch pipe and 902 feet of 10‑inch pipe for $131,035 with a $13,104 contingency. A second contract for relining about 1,004 feet of 10‑inch pipe in the East Hills section totals $113,249 with an $11,325 contingency. Combined project authorization is $268,713.
"This is a request from the Department of Public Works to enter into contract with Insituform Technologies in the sum of a $131,035," a Public Works presenter said, explaining the relining process and noting the work was selected from priority zones identified by AECOM monitoring. Staff described the relining method as a cured-in-place liner that forms a pipe-within-a-pipe and said the treatment can provide structural integrity and north of 50 years of service life.
Officials said the work is funded from the sewer fund and that relining is far less disruptive and more cost effective than full pipe replacement — the town estimated open‑cut replacement at about $250 per foot versus $43–$50 per foot for lining. Public Works added that most relining sections can be completed in a day with advance resident notice.
The board approved both contracts unanimously after brief technical questions about capacity, sequencing, and contingency funds. Staff said additional phases will follow as engineering identifies further priority sections.
