Stop Calling the Plumber: DIY Fixes That Are Easier Than You Think
Most common plumbing problems cost under $20 to fix yourself
The average plumber charges $150–$300 per hour, and a lot of what they fix is genuinely stuff you could handle in 20 minutes with a $12 part from the hardware store. I'm not saying you should tackle a burst pipe or a main line blockage — there are absolutely jobs that need a pro. But the leaky faucet, the running toilet, the slow drain, the dripping showerhead? Those are yours. Here's the honest breakdown of the most common household plumbing problems and exactly how to fix them yourself.
The Running Toilet
A toilet that runs constantly is wasting up to 200 gallons of water per day and adding real money to your water bill. The cause is almost always one of three things: a faulty flapper, a float set too high, or a failing fill valve. Lift the tank lid and watch what happens after a flush.
If water trickles into the bowl, the flapper isn't sealing — replace it (universal flappers cost $5–$8 and drop straight in). If water is running into the overflow tube, the float needs adjusting — bend the float arm down slightly or turn the adjustment screw counterclockwise. If neither fixes it, replace the fill valve entirely — a Fluidmaster kit costs about $12 and installs in under 30 minutes with no tools beyond pliers.
The Dripping Faucet
That drip-drip-drip isn't just annoying — a single faucet dripping once per second wastes over 3,000 gallons a year. The fix depends on your faucet type, but it's almost always a worn washer or O-ring.
Turn off the water supply valve under the sink, pull off the handle (usually held by a screw under the decorative cap), and pull out the cartridge or stem. Take the old cartridge to a hardware store to match it exactly, then reverse the process to install the new one. The whole repair costs $5–$15 and takes about 30 minutes the first time you do it — less every time after.
The Slow or Clogged Drain
Nine times out of ten, a slow bathroom drain is hair and soap scum sitting just a few inches below the drain cover. Before you reach for chemical drain cleaners (which damage pipes over time), try two things first.
First, use a zip-it tool ($3 at any hardware store) — a plastic barbed strip you push in and pull out to grab the clog. It's disgusting and incredibly effective. Second, pour a cup of baking soda followed by a cup of white vinegar down the drain, let it fizz for 15 minutes, then flush with boiling water. If neither works, the blockage is deeper and a $25 hand snake will reach it. Kitchen drain clogs are usually grease — a combination of dish soap and boiling water poured slowly down the drain dissolves most of them.
Leaking Pipes Under the Sink
If you spot a puddle under your bathroom or kitchen sink, open the cabinet and trace where the water is coming from. Most under-sink leaks are at a slip joint connection — the plastic compression fittings that hold the P-trap (the curved pipe section) together. These loosen over time and just need to be hand-tightened or replaced. A complete P-trap replacement kit costs under $10 and requires no tools. If the leak is from a supply line (the flexible hose connecting the shut-off valve to the faucet), turn off the water, unscrew the old hose, and thread in a new braided steel supply line — they cost $6–$10 and are far less likely to fail than the plastic originals.
Before you do any plumbing repair, know where your main water shutoff is. It's usually in the basement, utility room, or outside near the foundation. In a real emergency — a burst pipe, a fitting that comes apart mid-repair — you need to be able to get there in seconds without thinking. Walk the route now. Also: always have a bucket and a couple of old towels nearby when you open any supply line. There's always residual water in the pipes, and it will come out.
