Why Campello needs this specifically
In Campello’s triple-decker buildings, a backup often means a shared lateral serving multiple units, so extraction has to account for cross-contamination risk between adjacent households, not just the unit where it surfaced.
Shared sewer laterals in older triple-decker buildings mean a single backup or root intrusion event can flood more than one unit at once, and cross-contamination risk between units is real once black water is standing.
What to know before you call
Standing sewage in an occupied room is an active health hazard from the first minute — see the sewage backup cleanup hub for the full first-hour response steps. See the full sewage backup cleanup breakdown →