A sewer camera inspection is the fastest way to find the cause and determine the right fix.
A sewer backup is one of the most stressful plumbing emergencies a homeowner can face. Sewage in your home is a health hazard, and every minute of delay can mean more damage.
Here’s exactly what to do, what causes it, and how to prevent it from happening again.
Every drop of water that goes down any drain in your home ends up in the same sewer line. If that line is blocked, the water has nowhere to go but back into your house. Stop all water use — toilets, sinks, showers, dishwasher, washing machine — until the problem is resolved.
Most homes have a sewer cleanout — a capped pipe (usually white PVC, 3–4 inches in diameter) located outside near the foundation or in the front or side yard. Carefully remove the cap. If there’s pressure behind it, stand to the side. Opening the cleanout can allow backed-up sewage to drain outside rather than into your home.
If you can’t find your cleanout or it’s sealed shut, don’t force it. Wait for your plumber.
A sewer backup requires professional diagnosis. The cause could be a simple clog, tree root intrusion, a collapsed pipe section, or a problem with the municipal sewer main. A sewer camera inspection identifies the exact location and cause so the fix is targeted — not a guess.
We offer sewer camera inspections and sewer line repair across Sonoma and Marin County. We can typically get a camera in your line within hours, not days.
Before cleanup begins, take photos and video of the affected areas. Document the extent of the backup, any visible damage, and the areas impacted. This documentation is essential if you file an insurance claim. Most homeowner's policies cover sudden sewer backups, though coverage varies — and a sewer backup endorsement on your policy significantly improves what's covered.
This is the most common cause of sewer line problems in Sonoma County. Tree roots are drawn to the moisture and nutrients inside sewer pipes. They enter through small cracks or joints and grow until they block the line entirely. Older clay and cast iron pipes are especially vulnerable.
Many homes in the North Bay — particularly those built before the 1970s — have original clay or cast iron sewer lines. These materials degrade over decades. Clay pipes crack. Cast iron corrodes. Eventually, sections collapse and block the flow.
Cooking grease, soap residue, and non-flushable items (wipes, feminine products, paper towels) accumulate inside the sewer line over time. Even "flushable" wipes don't break down the way toilet paper does and are a leading cause of residential sewer clogs.
Soil shifting over time can cause a section of pipe to sink, creating a low spot (or "belly") where waste and water collect instead of flowing toward the main sewer. This is common in areas with expansive clay soils, which are present in parts of Sonoma County.
Occasionally the problem isn't your line — it's the city's. If multiple homes on your street are experiencing backups simultaneously, the issue may be in the municipal main. Contact your local utility or public works department in addition to calling a plumber.
Never pour grease down the drain. Let cooking grease cool and dispose of it in the trash. Grease solidifies inside pipes and traps everything that flows past it.
Only flush toilet paper. Nothing else — not wipes (even "flushable" ones), not feminine products, not paper towels. These don't break down and are the most common cause of preventable clogs.
Schedule a sewer camera inspection every 3–5 years. This is the single best preventive measure. A camera inspection catches root intrusion, pipe deterioration, and buildup before they cause a backup. It costs a fraction of what emergency sewer repair costs.
Know where your cleanout is. Find it now, before you need it. Mark it so you can locate it quickly in an emergency.
Consider a backwater prevention valve. This one-way valve allows sewage to flow out but prevents it from flowing back into your home. It's especially worth considering if you have fixtures below the sewer main level (basement bathrooms, for example).
Let the local experts handle it. West Coast Plumbing has been serving Sonoma County homes and businesses with fast, friendly, and reliable service for years. Schedule your Fall Plumbing Checkup today and enjoy a worry-free winter.
Let the local experts handle it. West Coast Plumbing has been serving Sonoma & Marin County homes and businesses with fast, friendly, and reliable service for years. Schedule your Fall Plumbing Checkup today and enjoy a worry-free home.
