Drain Cleaning and Sewer Line Questions, Answered

Start with the simplest tools. Pull the stopper and remove any hair, then plunge with a cup plunger and a few inches of water, plugging the overflow hole with a wet rag. If that fails, clean out the trap under the sink or use a hand-crank drain snake. This Old House advises starting with a plunger rather than chemicals.

Leave the water in place for plunging, since it helps the plunger seal and push. Don't pour chemical drain cleaner into standing water; Poison Control warns it can splash back and burn skin and eyes. If plunging doesn't work, bail the water into a bucket, then clean the trap or use a hand snake. If several drains hold water, suspect the main line.

Most shower clogs are hair and soap. Unscrew or pry off the drain cover, then fish out the hair with a bent wire or plastic drain tool while wearing gloves. Plunge with the cover off, or feed in a small hand snake. Bob Vila warns against boiling water if your drain pipes are plastic, since it can loosen PVC joints.

It's not a good DIY job. Rental cable machines can kink, jam or damage older pipe, and HomeGuide advises leaving main line clogs to a professional. What you can do: stop using water, check the outdoor cleanout, and call your sewer agency. If the agency finds its side clear, hire a plumber to clear your private line.

Watch for several drains slowing at once, a toilet that gurgles when a sink or tub drains, or water coming up in the shower when you flush. Then check the outdoor cleanout. The City of Lincoln tells residents that water standing in the property-line cleanout means calling the city, while a dry cleanout means the clog is in the private line.

You're responsible for the private pipe from your house toward the street, called the upper lateral. SacSewer, Folsom, Davis, South Placer MUD and Woodland maintain the part near the street, called the lower lateral. In the City of Sacramento's own sewer area and in Placerville, the owner owns the line all the way to the main, though Sacramento assists with lower-lateral repairs.

Your sewer agency. SacSewer, (916) 875-6730, aims to arrive within two hours and repairs problems in its pipe at no cost. In the City of Sacramento's sewer area, call 311. Roseville, Folsom, South Placer MUD, EID and Davis give the same call-first advice. If the agency finds its side clear, then call a plumber.

Nationally, about $100 to $275 for one sink, tub, shower or toilet clog and $175 to $600 for a main line, according to HomeGuide's 2026 guide. Angi says most clogs cost $150 to $350. Local prices vary with access and method, so ask for the total, including any trip fee, before work begins.

If you mean snaking, or cabling, the main line, HomeGuide puts it at $150 to $500 nationally. HomeGuide also reports Roto-Rooter franchise prices of $225 to $500 to snake pipes and $500 to $900 to hydro jet a main drain, noting each franchise sets its own price list. Get a written total first.

HomeGuide lists $50 to $250 per linear foot, or about $2,000 to $10,000 for a 40-foot line, with a $6,000 national average. Angi's 2026 average is $3,319. Trenchless lining or pipe bursting can cost about the same per foot but save on digging and restoration. Depth, length, driveways and permits drive the total.

Most of the cost is reaching the pipe and restoring everything above it. Angi puts excavation alone at $50 to $200 per foot, HomeGuide adds $3 to $8 per square foot to remove concrete, and permits add more. Longer, deeper lines and lines under driveways or trees cost the most. Trenchless methods can cut the restoration bill.

Usually not. The California Department of Insurance says wear and tear is not usually covered by a homeowners policy, and an aging sewer pipe is a wear-and-tear problem. Some insurers sell a service line endorsement that covers buried utility lines, including sewer pipes, plus digging and landscaping. Check your policy and ask your agent.

Not under most standard policies, which exclude wear and tear and maintenance problems. Policygenius lists tree and root damage among the causes a service line endorsement typically covers, though terms vary by insurer and state. Separately, a sewer backup rider may cover water damage inside the house when roots cause a backup.

It depends on your pipe and your policy. First learn which part of the line you're actually responsible for; SacSewer notes private sewer insurance only covers that part and says it doesn't endorse any program. An older home with a clay or Orangeburg lateral carries more risk than a newer home with plastic pipe. Compare the premium with a camera inspection.

Yes. Triple-I says roots work into small cracks and joints seeking moisture and can cause extensive damage as they grow. Roseville adds that trees planted over a line can twist it and open gaps. Once inside, roots catch grease and wipes until the line blocks. A camera inspection shows how far the damage goes.

Have them cut out first, with a cable machine or hydro jetter. Root killers are pesticides; if you use one, follow the label exactly. The EPA notes California banned copper sulfate root killers in nine Bay Area counties. None of these repairs the crack that let roots in, so lining or replacing the damaged section is the lasting fix.

A belly, or sag, is a low spot where part of the pipe has settled and lost its downhill slope. Water and solids collect there, so the line clogs repeatedly at the same spot. Pinellas County lists sags as a lateral defect and notes Orangeburg pipe is prone to them. A camera inspection finds it; the fix is usually re-laying that section.

Use them with great care, if at all. Poison Control says many contain concentrated acids or lye that can cause serious burns, permanent tissue damage and even death if swallowed. Wear goggles and gloves, never mix them with other cleaners, and keep them away from children. If one doesn't work, tell the plumber you used it.

Never pour it down the drain. SacSewer's advice is to let grease cool, put it in a sturdy container like a soup can, and throw it in the trash, and to scrape greasy food scraps into the organics cart. For large amounts of fryer oil, SacSewer suggests checking with your waste hauler or a local recycling site.

A backwater valve is a one-way valve on your sewer line that lets wastewater out but stops sewage from the public system coming back in. Under California Plumbing Code 710.1, it's required when fixtures sit lower than the next upstream manhole cover. SacSewer's ordinance makes owners install and maintain one in that situation.

Generally the landlord, since California Civil Code 1941.1 requires landlords to keep plumbing in good working order. But tenants must use plumbing properly under Civil Code 1941.2, and if a tenant's misuse substantially caused the clog, the landlord may not have to fix it. Report problems in writing and check your lease.

For most sewer work, yes. Anyone can do a job under $1,000 total without a license only if it needs no permit and they have no employees; that limit rose from $500 in 2025. Sewer repair and replacement need permits and a licensed contractor, such as a C-36 plumbing contractor. Check any license on the CSLB website.

Call (916) 712-7030. This free line connects you with an independent drain cleaning plumber who works in your part of the region, and you agree on the price and the work directly with them. Before anyone starts, look up their license on the CSLB website. If sewage is backing up, call your sewer agency first; most check the public side of the line for free.

In SacSewer's area, yes. Its Upper Lateral Loan Program offers low-interest loans of up to $15,000 to repair or replace a private lateral, with fixed rates and 5- to 10-year terms, and no interest for customers in its Sewer Lifeline Rate Assistance Program. Other agencies may differ, so ask yours.