How to Know If Your Drain Is Clogged

2025-04-01 SM Plumbing's Heating & Cooling Houston, TX
How to Know If Your Drain Is Clogged — SM Plumbing's Heating & Cooling Blog
Houston, TX (346) 776-0337

A slow or clogged drain is one of the most common plumbing problems in Texas homes — but knowing when it's a minor nuisance versus a serious blockage can save you hundreds in damage.

5 Signs Your Drain Is Clogged

  • Water drains slowly — If it takes more than 30 seconds to drain a full sink, you have a partial blockage building up.
  • Gurgling sounds — Air trapped behind a blockage causes gurgling sounds from drains or toilets when water runs nearby.
  • Water backs up — If flushing the toilet causes water to rise in the shower, you have a main line blockage.
  • Foul odors — Trapped food, grease, hair, and soap scum decompose and create sewage-like odors from drains.
  • Standing water — Water pooling in the shower floor, bathtub, or floor drain is a clear sign of a clog.

When Is It a DIY Fix?

Minor clogs close to the drain opening — hair in a bathroom sink, food scraps in a kitchen drain — can sometimes be cleared with a plunger or a drain snake. Chemical drain cleaners may temporarily clear small blockages but corrode pipes with repeated use and should be avoided.

When to Call SM Plumbing's

Call a licensed plumber when:

  • Multiple drains are slow or clogged simultaneously — this indicates a main sewer line blockage
  • The clog returns within days of clearing it
  • You hear gurgling from the toilet when using other drains
  • You notice sewage odors inside the home
  • A plunger or drain snake has not cleared the blockage

SM Plumbing's Heating & Cooling provides same-day drain cleaning throughout Houston and Texas. Call (346) 776-0337 for fast, professional drain service.

Prevention Tips

  • Use a mesh hair catcher in every shower and bathtub drain
  • Never pour grease, oil, or fat down the kitchen drain
  • Run hot water for 30 seconds after doing dishes
  • Schedule annual professional drain cleaning to prevent buildup

Need Plumbing or HVAC Service in Texas?

SM Plumbing's Heating & Cooling · 1734 Knightwick Dr, Houston, TX 77008 · Same-day service · 24/7 emergency · Upfront pricing

Call (346) 776-0337