Leaks, clogs, and drips. 12 approachable plumbing guides — know when it's a $5 fix and when to call a pro.
⚠️ Water emergency? Know your main shutoff valve location before any plumbing work. Find it now →
Before a burst pipe floods your home, you need to know where the shutoff valve is. This is the most important 5 minutes of homeownership. Do this today.
There are TWO shutoff valves you need to know: (1) The main water shutoff for the whole house, usually near the water meter or where the main line enters the house. (2) Individual angle stops under every sink and toilet — these shut off only that fixture. Know both.
Check these locations: basement or crawlspace (where the main line comes through the foundation wall), utility room, garage, or outside at the meter box in the ground. It's a gate valve (round wheel) or ball valve (lever).
Actually turn it. Ball valves: turn 90° so lever is perpendicular to pipe = OFF. Gate valves: turn clockwise until it stops = OFF. Turn water back on. Some valves seize from years of non-use — work them now so they work in an emergency.
Under every sink and behind every toilet is an angle stop valve (the small oval handle). Tighten these clockwise to shut off just that fixture without affecting the rest of the house.
Most clogs are right under the drain — a 3-minute fix. Chemical drain cleaners are a last resort that damage pipes. Try these methods first.
Most pop out by hand or have one screw. Lift it off. Have paper towels ready.
The Zip-It ($5) is a plastic strip with barbs that grabs hair. Insert it 6–8 inches, twist, and pull. What comes out is disgusting. It's also the entire clog. You're welcome.
Run the hottest tap water for 2 minutes. Drain should be clear. If not, try the baking soda method (1 cup baking soda → 1 cup vinegar → wait 30 min → flush with boiling water).
Cooking grease solidifies in cold pipes. Always pour cooled grease into a container and throw it in the trash.
Boil a full kettle. Carefully pour it directly down the drain in 3 stages — 30 seconds apart. This melts the grease for many clogs.
Squirt a generous amount of dish soap (Dawn works best) down the drain. Chase with a pot of the hottest tap water. The degreaser breaks down cooking oil.
Under the sink, the curved U-pipe is the P-trap. Place a bucket under it, unscrew the slip-joint nuts, and clear the grease by hand. Clean it, reinstall, test.
The flat-bottom cup plunger is for flat drains (sinks, tubs). The flange plunger (with the extended rubber flap) is for toilets.
Cover the overflow hole with a wet rag. Place plunger over drain — it must be full submerged in water for suction. Pump forcefully 15–20 times, then pull straight up quickly to break the suction.
A faucet that drips once per second wastes 3,000 gallons per year. It's almost always a worn washer or O-ring — a $5 fix most people ignore for years.
There are 4 types of faucets: compression (two separate handles), ball (single lever that swivels), cartridge (single or double handle, smooth action), and ceramic disc (wide single lever). The repair is different for each — look up your faucet brand online to confirm the type before taking it apart.
Turn the angle stops under the sink clockwise. Turn the faucet on to release pressure. Confirm water is off before continuing.
Pop the decorative cap on top of the handle (flathead screwdriver). Unscrew the screw underneath. Pull the handle off straight up. Some wiggling may be needed.
For compression: replace the rubber washer at the bottom of the stem. For cartridge: pull out the cartridge (note orientation) and take it to the hardware store to match an exact replacement. For ball: buy a ball faucet repair kit for your brand — it contains all the parts.
Reassemble in reverse order. Turn water back on slowly. Open the faucet and look for drips. Tighten packing nut slightly if there's a drip at the stem.
A running toilet wastes up to 200 gallons per day and creates that constant hiss you've learned to ignore. It's almost always one of three parts — all under $20 and replaceable without any plumbing experience.
Flapper: Water runs into the bowl constantly after flushing (add food dye to tank — if dye appears in bowl without flushing, flapper is leaking). Fill valve: Water hisses at the tank and the water level is correct or overfills. Float height: Water running into the overflow tube (check the water level — it should be 1 inch below the top of the overflow tube).
Turn off the angle stop under the toilet. Flush to empty the tank. Unhook the old flapper from the pegs on the overflow tube and disconnect the chain from the flush handle arm. Take the old flapper to the hardware store to match it — flappers are not universal. Snap the new one on, adjust chain length (1" slack), turn water back on.
If the water level is correct but it still hisses: turn the adjustment screw or pinch clip on the fill valve to lower the water level to 1 inch below the overflow tube. If adjusting doesn't stop the hissing, replace the entire fill valve (Fluidmaster 400A is the universal replacement: $10, installs in 10 minutes with just a wrench).
If a new flapper still leaks: the flush valve seat (the ring the flapper seals against) may be cracked or have mineral buildup. Run your finger around the seat ring — any roughness prevents a seal. Clean with a fine Scotch-Brite pad. For cracks: flush valve replacement (replacing the entire tower) is needed — this is a one-hour job.
The single easiest plumbing upgrade. No shutoff valves needed (just do it in a short shower), no solder, no cutting. A 2.0 GPM WaterSense showerhead at $30 feels better than your old 2.5 GPM model and cuts shower water use by 20%.
Hold the shower arm (the pipe coming out of the wall) with pliers wrapped in a rag — never let it rotate or you'll break the pipe inside the wall. Turn the showerhead nut counter-clockwise with an adjustable wrench. Most old showerheads just unscrew. If it won't budge, spray WD-40 on the threads and wait 5 minutes.
Remove old Teflon tape and pipe dope from the shower arm threads with a rag. Wrap 2–3 layers of new Teflon (plumber's) tape clockwise around the threads. Start at the end and spiral back toward the wall. The tape fills thread gaps and prevents leaks — skip this step and you'll get a drip.
Thread the new showerhead on by hand until snug. Then use the wrench for just an additional 1/2 to 1 full turn — don't over-tighten or you'll crack the plastic fitting. Turn the shower on and check for leaks at the connection. A slow drip: tighten a bit more. A spray that keeps dripping after tightening: remove, add more Teflon tape, reinstall.
The curved U-pipe under your sink (the P-trap) holds water that blocks sewer gas from entering your home. Leaking P-traps, bad odors, or persistent clogs that resist snaking are all reasons to replace it.
Modern PVC P-traps use hand-tightened slip-joint nuts — no wrench required unless the old one is corroded metal. If you're replacing a chrome metal P-trap with a new white PVC trap, check the drain outlet size (1-1/4" for bathroom sinks, 1-1/2" for kitchen sinks) before buying.
Place a bucket directly under the P-trap. Unscrew the two slip-joint nuts by hand (counter-clockwise). The curved section will come free — it will contain standing water and some debris, hence the bucket. Note the orientation of the trap for reassembly.
P-traps vary in: pipe diameter (1-1/4" or 1-1/2"), depth of the U-curve, and whether they're center-outlet or offset. Bring the old piece to the hardware store and match it exactly — most stores have display sets showing how they assemble.
Slide the slip-joint nuts onto each end of the new trap before fitting the pieces together. Connect the J-bend to the drain stub-out, then fit the horizontal arm into the wall drain outlet. Hand-tighten both nuts firmly — just "snug plus a quarter turn." Over-tightening cracks PVC immediately.
Fill and empty the basin. Look at every connection while the water runs. A slow drip: tighten the closest nut 1/4 turn. Still dripping: disassemble and check the washer is seated correctly inside the slip joint. A new P-trap installed correctly should be dry immediately.