A drain that is overflowing or pushing water back up is urgent, and our 24/7 line is open right now. While you wait, stop running water in the house, keep the washing machine and dishwasher off, and move rugs and electronics away from the wet floor. Do not pour chemical drain opener into a standing blockage, because it sits there and can burn the next person who opens the pipe.
If only one sink or tub is slow, you probably have a local clog in that fixture's trap or branch line. If several fixtures gurgle or back up together, the blockage is further down the line, and that changes the tools we bring.
Backed-up drain emergency: signs to act on right now
Most blockages announce themselves a few days before the drain stops completely. Knowing which sign you have tells us whether to start with a hand cable at the fixture or a larger machine at a cleanout.
One fixture drains slowly
Water pools in the sink or tub and leaves a little at a time. This is usually hair, soap film or food residue packed into the trap or the short branch behind it, and a cable at the fixture often clears it.
Gurgling in other fixtures
When you flush a toilet and the shower drain bubbles, air is being pushed through a partly blocked line. That points to the shared branch or the main drain, not to one fixture.
Washer water in the tub or floor drain
Laundry discharge that rises in a nearby tub or floor drain means the line downstream is restricted. The washer moves a lot of water quickly, so it shows a blockage before a sink does.
Water backing up after every use
If the kitchen sink fills when the dishwasher drains, grease has probably narrowed the line. Left alone it hardens further, and the next stop is a full blockage.
Repeat clogs in the same place
A drain that clears and then slows again within weeks is telling you about a belly, a joint offset, roots or scale in the pipe. A fresh cable pass will not fix that on its own.
What causes drains to clog in older Millbrae houses
Millbrae grew fast after the war. City counts show dwelling units climbing from 2,783 in 1950 to 4,803 in 1960, so a large share of the housing stock carries drain pipe that has been in the ground or the wall for decades. Older clay, cast iron and early plastic joints collect scale, roots and sediment more readily than a newer line, which is why a drain that has cleared once may need a camera look the second time.
Inside the house the usual culprits are simpler. Kitchen lines take grease and starch, bathroom lines take hair and soap, and laundry lines take lint that a mesh trap never stops. Wipes sold as flushable are a steady cause of toilet and main line stoppages, so treat them as trash.
How we clear a drain
We start by asking which fixtures are affected and when it began, because that narrows the search before anyone picks up a tool.
Find the blockage point
We run water, listen, and check the nearest cleanout. A single fixture points to the trap and branch, several fixtures point to the main drain, and that decides where we open the line.
Cable the line
A cable with the right head cuts through hair, grease and soft debris, and pulls out what it catches. For small lines this is quick and tidy, and we lay protection down before we start.
Camera when the answer is not obvious
If the clog returns or the cable hits something solid, we send a camera down the pipe to see roots, a crushed section or a joint that has shifted. Seeing the pipe replaces guessing about it.
Step up to jetting if needed
Grease and scale that a cable only punches through need to be scoured off the wall. We will explain when hydro jetting is the better tool, so you pay for the job the pipe actually needs.
Test and explain
We run water through the whole fixture, confirm it drains freely, and tell you what we found. If the cause is a fault in the pipe, you hear it from us in plain terms before anything else is proposed.
Your lateral, your responsibility
Under Millbrae Municipal Code chapter 8.20, the property owner builds, maintains and clears the sewer lateral on their own lot. The city looks after only the stretch between the cleanout wye and the main, and only where the cleanout sits in the designated spot, such as the sidewalk. So a blockage in the pipe that leaves your house is yours to clear, even when it feels like a street problem.
The same chapter says an owner must clear an obstruction immediately once they find it or the city notifies them. Roots are singled out too: the city can require root removal from a private lateral, with 120 days after notice to remove the roots and repair the pipe so it does not recur. A cable pass that only reopens the line for a month will not satisfy that.
Because the code also covers testing and repair of laterals at certain property sales, a drain history that includes repeat blockages is worth a look on camera. Ask us about a sewer camera inspection if the same drain keeps slowing down.
Cable, jet or camera: how to choose
Different blockages call for different tools, and the cheapest tool that works is the right one. This is how we think about it.
| Situation | Usual first tool | Why |
|---|---|---|
| Slow sink or tub, one fixture | Hand cable at the trap or fixture | Local clog, short run, fast to clear |
| Kitchen line backs up repeatedly | Cable, then jetting if grease is on the wall | Grease coats pipe walls and returns after a plain cable pass |
| Several fixtures back up together | Machine cable at the cleanout, camera if needed | Blockage is in the shared branch or main |
| Same drain clogs every few weeks | Camera inspection | Roots, a belly or a broken joint will not stay cleared |
| Water at the lowest drain in the house | Main line cleaning at the cleanout | The main is blocked and water exits at the lowest opening |
What people try first, and what we do instead
DIY or what people try
- Pour liquid drain opener into a standing blockage
- Push a plunger harder at a drain that is full of water from the main line
- Run a short hardware store snake that stops at the first bend
- Keep running the dishwasher and hope the clog gives way
- Flush wipes or paper towels down the toilet to move the water
Professional approach
- Locate the blockage before choosing a tool
- Use a cable sized to the pipe so it does not kink or break off in the line
- Pull a camera through when the clog keeps returning
- Recommend jetting only when scale or grease justifies it
- Explain the cause and what to change so it stays clear
Grease, laundry and kitchen drains
Kitchen drains deserve their own mention because grease is the cause people least suspect. Warm oil runs down the pipe and looks harmless, then cools into a coating that catches everything after it. Wipe pans with a paper towel before washing and keep a can for oil.
Millbrae's own code treats fats and oils seriously for businesses, setting a local limit of 100.0 mg/L of oil and grease in what goes to the city sewer. That rule is written for commercial kitchens, but it shows why a home line shared with a garbage disposal clogs faster than one without. If your kitchen sink and disposal back up together, our garbage disposal page covers that side of the problem.
What affects the cost of clearing a drain
Cost depends on how deep the blockage sits and which tools it needs, and we say so before we begin.
Location of the clog
A fixture trap is simpler than a main line reached through a cleanout.
Access
A cleanout that is easy to reach saves time, while a drain with no cleanout may need the vent or a toilet pulled.
Tool needed
A hand cable, a machine cable, a camera and a jetter are priced differently.
Cause
A soft clog clears quickly, while roots or scale take longer and may recur.
Time of day
Nights and weekends can change the price, and we tell you before dispatch.
Call the 24/7 line for a clear price before work starts. If the camera shows a damaged pipe, we show you the footage and explain your options before you decide anything.
Do not let it overflow
If a drain is backing up into your home, the sooner the line is cleared the less water ends up on the floor. Call the 24/7 line and describe which fixtures are affected.
When a clogged drain points to something bigger
Sometimes the drain is the symptom. If the main line is blocked, sewer line cleaning reaches the pipe where an ordinary fixture cable cannot. If we find a damaged section, we will explain it and you can decide how to proceed.
We also work in neighboring towns. If you are in the next city over, our Burlingame plumbing page covers service there, and the service area page shows the rest of the coverage.
Yes. The 24/7 line is answered overnight, on weekends and on holidays. Tell the dispatcher which fixture is backing up, and we send a technician as soon as one is available. We give you the price before work starts, and we do not promise an arrival time we cannot keep.
A repeat clog usually means the pipe itself has a problem, such as roots, a sag where water sits, scale on the wall, or a joint that has shifted. A camera inspection shows which one. Clearing it again without looking only buys a few weeks.
We advise against it. Chemicals can sit in a fully blocked pipe, damage older fittings, and splash on whoever opens the trap next, including us. A plunger or a hand cable is safer, and if neither works, call us.
A drain clog is usually local to a sink, tub or toilet branch. A sewer clog sits in the larger line that carries everything out of the house. If several fixtures back up together, or the lowest drain overflows, treat it as a main line problem.
In Millbrae the owner is responsible for the lateral on their own lot. The city handles only the part between the cleanout wye and the main, and only when the cleanout is in the designated location. Check chapter 8.20 of the municipal code or call Public Works for your property.
Yes, when the right tool is matched to the pipe. We size the cable to the line and use a camera if we suspect a fragile or damaged section. Older clay and cast iron need a lighter hand than newer plastic.
Yes. Call the 24/7 line and we explain what drives the price and give you a clear figure before work begins. If we find something that changes the job, we stop and talk it through with you first.
Sources and standards: The California Plumbing Code (based on the Uniform Plumbing Code) for drain and vent rules. Millbrae Municipal Code chapter 8.20 on sewer laterals. These are named as reference documents, not as credentials.