An overflow starts as a bathroom problem and ends as a floor problem. Bowl water is not clean, so tile, grout and baseboards are sanitized, and any water that reached carpet or the subfloor needs a closer look.
Gray water or black water
An overflow from a clogged bowl with no sewage behind it is usually gray water. Water that came up from a blocked drain or the sewer is Category 3 and is handled like a sewage backup. The City of La Verne's Sewer Division maintains and cleans the city sewer system, and overflows in it are reported to the Public Works Department.
What gets checked besides the floor
Water takes the easiest path, which is often down:
- The subfloor under the tile or vinyl
- The ceiling and walls in the room below
- Baseboards and the cabinet beside the toilet
- Hallway carpet the water reached
How the floor is treated
Tile is cleaned and sanitized, grout is scrubbed, and the subfloor is read with a meter before anything is covered again. Porous items such as bath mats and low drywall that touched contaminated water are removed rather than dried.
Who to tell
If the toilet is in a building with other units, tell the property manager, because the ceiling below may belong to a neighbor. For a backup from the drain itself, see sewage backup cleanup.
