The main causes are grease in kitchen lines, hair bound with soap scum in bathroom lines, food debris from garbage disposal misuse, non-flushable items in toilets, mineral scale from hard water, and tree roots in main sewer lines.
Kitchen Lines: Grease Above All
Grease pours down warm and liquid, then cools and congeals on the pipe wall a few feet in. Everything that follows sticks to it. This is the number one cause of kitchen drain clogs and it builds silently for months before the line finally blocks. Coffee grounds, pasta and rice, potato peels, and fibrous vegetable scraps all compound it.
Bathroom Lines: Hair Plus Soap
Hair alone would mostly wash through. What creates the clog is soap scum coating the pipe wall and giving hair something to bind to. Toothpaste and cosmetic residue add to it.
Toilets: Things That Should Not Be Flushed
“Flushable” wipes lead the list by a wide margin — they clear the bowl and then snag downstream. Paper towels, cotton swabs, feminine hygiene products, dental floss, and cat litter all follow.
The Two Albuquerque-Specific Causes
Hard water scale. Dissolved calcium and magnesium precipitate onto pipe interiors, roughening and narrowing them. That scale gives grease, soap, and hair far more to grab, which is genuinely why local drains clog faster than national guidance suggests. A water softener addresses it throughout the house.
Tree roots. Established Albuquerque neighborhoods have mature trees whose roots seek the moisture in a sewer lateral and enter at joints or cracks. This is the most common cause of main line blockages here, and it is why homes with big trees should be on an annual cleaning schedule.
Structural Causes
A sag or belly in the line holds standing water where solids settle. Cracks, joint separations, and collapsed sections in older cast iron and clay catch debris. These produce clogs that keep returning no matter how often the line is cleared — a camera inspection is the only way to tell.
