Recurring drain problems can have several explanations: build-up, roots, or damaged or misaligned pipe. Older cast iron systems may need closer attention, but a recurring clog doesn't automatically mean the whole line has to be replaced. Start with the cause.
Part 1: Write down the symptoms
Before anyone visits, note:
- ☐ Which drains are affected: one fixture, several, or the basement floor drain?
- ☐ When it happens: after laundry, after heavy rain, after a shower upstairs?
- ☐ How often: weekly, monthly, seasonally?
- ☐ What comes back: clear water, grey water, or sewage?
- ☐ Sounds or smells: gurgling, a sewer smell?
- ☐ What's been done: cabling, jetting, chemicals, and when?
- ☐ What was found last time: roots on the cable? A camera report?
- ☐ The age of the house, and whether the drains have ever been replaced
Part 2: What the pattern usually means
| Pattern | Most likely cause |
|---|---|
| One fixture, slow over time | A local clog in that fixture's drain |
| Several fixtures at once, floor drain gurgles | The main drain or sewer line |
| Backs up after heavy rain or snowmelt | The City sewer surcharging, or groundwater getting into a cracked line |
| Roots on the cable, or comes back seasonally | Root intrusion at a joint or crack |
| Clears easily, then blocks again within weeks | A sag, an offset, or corroded cast iron catching debris |
Part 3: Questions to ask about an inspection
- ☐ Will you run a camera, and can I watch the screen?
- ☐ Where exactly is the problem, and how deep?
- ☐ Is it in my line or on the City's side?
- ☐ Is cleaning enough, or is the pipe damaged?
- ☐ What are my options, from least invasive up, and what does each one cost?
- ☐ What digging or floor cutting does each option need, and what gets restored?
- ☐ Can I have the footage?
Same backup, still no answer?
Book a drain and sewer assessment. We'll show you the cause on camera before recommending anything.