Madison approves $35,500 smoke‑testing task order to pinpoint inflow into Wells Drive sewer basin

The Madison Board of Public Works and Safety on Oct. 6 authorized a $35,500 task order for Commonwealth to perform smoke testing in four neighborhoods served by the Wells Drive lift station to locate inflow and infiltration, illegal sump‑pump connections to sewers, and defects in laterals. Public works director Brian (presenter) explained the work will follow prior flow‑metering that demonstrated clean water entering wastewater lines and consuming treatment capacity.

Rob Valucci of Commonwealth described the three‑phase approach: Phase 1 flow metering identified excess clean water during rain events; Phase 2 smoke testing will pinpoint lateral and downspout connections that allow stormwater or sump discharge into the sewer; Phase 3 will be design and construction of upgrades to the Wells Drive lift station based on findings. ‘‘When we’re done with the effort, Brian will have a report that identifies all these locations that then, as time allows, his staff could then go and address them individually,’’ Rob said.

Staff emphasized that homeowners are responsible for correcting illegal private connections and that the city will notify affected properties ahead of testing; staff will coordinate with the fire department for smoke operations. Board members asked about the project timeline; consultant representatives said design work for station upgrades would likely begin next year with construction potentially in 2027–28 and a 12–15 month construction duration once bid.

The board moved to approve task order 2025‑4 for $35,500 and authorized the mayor to sign; the motion passed by voice vote. Staff noted the smoke testing is intended to reduce clean-water inflow before sizing pumps and wet wells for the Wells Drive upgrade, and to help keep the system in compliance with IDEM requirements.