Shared water or sewer service between properties

Some older properties share a Y-connection or common service. Identify ownership, easements, responsibility and separation process before excavation or replacement.

Decision triage

VERT / GREEN · JAUNE / YELLOW · ROUGE / RED

What the professional checks

The specialist/authority checks connection type, route, title/easements, private/public responsibility, permits, shutdowns, size and separation method.

Official sources

Sources checked: 2026-08-24

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Start from a symptomOrganize plausible causes, observations, urgency and the right professional.Open →Track water useCompare meter readings and flag unusual changes.Open →Review water resilienceConnect flooding, drainage and future events to building adaptations.Open →Score home resiliencePrioritize water, outages, fire, climate, health and records.Open →Plan site, drainage and utilitiesCoordinate access, water, sewer, wells, septic, grading and site constraints.Open →
V15

Remaining system checks not to miss

V15 covers issues that can block a project, cause a loss or become expensive once concealed.

Before closing wallsPrivate sewer/water servicePost-renovation commissioningCodes + climate by province
V16

Advanced diagnostics to cross-check

V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.

Drinking-water quality and treatmentRoof snow and ice
V27

Project risks and overlooked interfaces

V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.

Laundry room leak containment
V28

Finish and service details to verify

V28 connects small details that become costly once finishes are closed.

Outdoor faucet: freeze and backflow protection
V31

Commissioning and everyday safety

V31 helps verify systems after work and document the values that make a home safer to operate.

HRV/ERV: frost, condensate and balancing
V32

Post-disaster and legacy systems

V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.

Sewage backup: contamination and recovery
V47

V47 interfaces not to miss

These details are small on a drawing but can control water, structure or durability.

Building trapCast-iron stack