Surrey Plumbing, Neighbourhood by Neighbourhood

Surrey's population has roughly doubled since the 1990s, and most neighbourhoods carry the plumbing signature of the decade they were built. Post-war cores were plumbed with galvanized steel and clay drain tile. The big suburban boom of the 1980s and 90s ran on Poly-B supply lines. Newer master-planned communities use PEX and modern ABS, but often sit on engineered fill that settles over time.

Two things override the build-year rule: mature trees, which send roots into any older sewer lateral, and low elevation, which raises the odds of groundwater intrusion and sewer backflow during Surrey's heavy fall and winter rains.

If your home falls in the 1978 to 1998 window, read our Poly-B piping guide. Older copper homes should review pinhole leaks in copper pipe, and any property near large trees will want our guide to tree roots in sewer lines.

Surrey sits between the Fraser River and Boundary Bay, and several neighbourhoods drop close to sea level. During intense rainfall, the municipal system can surcharge and push water back toward the lowest homes on a block. That is where basements flood, not because of a failure inside the house, but because the street main is temporarily full.

A large and growing share of Surrey homes are condos and townhouses. In those buildings, the line between your responsibility and the strata corporation's is not always obvious, and getting it wrong can cost you thousands.

For the full breakdown, see our guide to strata plumbing responsibility.

Every neighbourhood ties into the same municipal backbone of water mains and sanitary sewers. Where your private line meets the city's is the boundary of what you own and pay to repair. Our overview of the Surrey water and sewer system explains that handoff and who to call when a problem is in the street versus your yard.