When and How to Repair a Leaky or Broken Faucet: A Practical Guide for Homeowners

A dripping faucet might seem like a minor nuisance, but it's one of the most common—and fixable—plumbing problems in most homes. Whether you're dealing with a slow leak, a handle that won't turn, or water that won't shut off completely, understanding what's wrong and what your repair options are will help you make an informed decision. 🚰

What Actually Causes Faucet Problems?

Most faucet issues stem from wear and tear on internal parts. The most common culprit is a worn washer or seal—small rubber or silicone components that create a watertight seal when you turn the faucet off. Over time, these compress, crack, or deteriorate, allowing water to drip or leak.

Other frequent causes include:

  • Corroded or mineral-clogged valve seats (the part that the washer compresses against)
  • Damaged O-rings (rubber seals that prevent leaks around the handle)
  • Worn cartridges or ball mechanisms (in single-handle faucets, these control water flow and temperature)
  • Loose or corroded connection nuts (where supply lines attach)

Understanding which part is failing matters because it determines whether you're looking at a simple swap or a more involved repair.

DIY Repair vs. Calling a Professional

The line between manageable and professional depends on your comfort level, the faucet type, and how much time you're willing to invest.

When DIY Makes Sense

Simple repairs you might handle yourself include:

  • Replacing a washer in a traditional two-handle faucet (often the easiest fix)
  • Tightening loose connection nuts underneath the sink
  • Cleaning mineral deposits from aerators (the screen at the faucet tip)
  • Replacing an O-ring or cartridge if you have the right part and instructions

These repairs typically require basic tools (wrench, screwdriver, replacement parts under $10–$20), and instructional videos can walk you through the process. Many older faucets are designed with simplicity in mind.

When Professional Help Makes Sense

You'll likely want a plumber if:

  • The faucet is a complex single-handle or touchless model (cartridges and sensors are harder to diagnose and replace)
  • You're not confident shutting off water supply or reassembling parts
  • The leak is coming from under the sink or within the wall (structural issues)
  • You need the repair done quickly and reliably
  • The faucet is still under warranty (DIY work may void it)
  • Water damage is already visible around the sink base or cabinet

Calling a professional also means you get a warranty on the work, and you avoid the risk of causing additional damage that ends up costing more to fix.

What to Know Before You Start

Shut off the water supply first. Locate the shut-off valves under the sink (or, if there aren't any, the main water shut-off for your home). This prevents a mess and gives you safe working space.

Know your faucet type. Two-handle, single-handle, pull-down sprayer, or touchless? Different designs use different internal components, and parts for one won't work on another. Check your faucet's manual or manufacturer name (usually stamped on the base or handle).

You'll need the right replacement part. If you identify that it's a worn cartridge or washer, you need the exact match for your faucet model. Bring your faucet model number or a photo to the hardware store.

Mineral deposits are common in hard-water areas. If you live where water is mineral-rich, vinegar soaks on aerators and occasional cartridge cleaning can extend faucet life.

The Cost Landscape

DIY parts (washers, O-rings, aerators) typically cost $5–$25.

Service calls for a plumber vary widely by region and complexity, but expect to budget for a base call fee plus hourly labor. A straightforward repair might run $150–$300 total, while more complex work costs more.

Full faucet replacement (if repair isn't worth it) ranges from $100–$400+ for the fixture itself, plus installation. Older faucets that are no longer manufactured sometimes make replacement the only practical option.

Key Factors That Shape Your Decision

  • Age of the faucet: Newer models may still be under warranty; very old ones may not be worth repairing
  • Your plumbing experience: Comfort with basic repairs lowers the case for calling someone
  • Time availability: Professional repair is faster if you're busy
  • Faucet complexity: Simple two-handle designs are easier to repair than modern cartridge or sensor systems
  • Whether water damage is visible: This signals urgency and may require professional inspection

The right choice for you depends on weighing these factors against your situation, skills, and budget. There's no universal answer—only the one that makes sense for you.