Running toilet repair in Fountain Valley, CA

Why a running toilet matters

A toilet that keeps running quietly after the flush can waste a lot of water. A small, steady leak from the tank into the bowl may add up to hundreds of gallons a day, and many people only notice when the water bill jumps. The fix is usually a cheap part and a short visit, which is why it is worth looking at as soon as you hear it.

Running comes in three kinds. The tank may refill and shut off, then start again by itself a few minutes later. The water may run continuously and never stop. Or you may hear a thin hiss as the fill valve strains. Each points to a different part.

The three usual causes

The flapper leaks. The flapper is the rubber seal at the bottom of the tank. Over the years it hardens, warps or gets coated with mineral scale, and water slips past it into the bowl. The tank then drains a little, the fill valve opens to top it up and you hear the toilet start by itself. This is the usual cause of a toilet that runs every few minutes.

The fill valve does not shut off. The fill valve closes when the float rises to the right level. If the float is set too high, the valve is worn or debris has lodged in it, the water keeps rising until it spills into the overflow tube. Water then runs continuously.

The chain is too tight or too loose. A chain that is too short holds the flapper open a crack. A chain that is too long can slip under the flapper and keep it from closing. The fix is a quick adjustment.

Less often, a cracked overflow tube, a leak at the tank to bowl gasket or a worn flush valve seat is the cause. A plumber can tell by looking.

Find the cause in ten minutes

Take the lid off and set it where it will not fall. Look at the water level against the overflow tube.
If water is spilling into the tube, the fill valve or the float setting is the problem.
If the level is below the tube, the leak is probably at the flapper.
Do the dye test. Add food coloring to the tank, wait fifteen minutes without flushing and look in the bowl.
Check the chain. It should have about a finger's width of slack.
Press down on the flapper gently with a spoon handle. If the running stops, the flapper is not sealing.
Look at the flapper edge for wear or scale. Wipe it with your fingers. A slimy or gritty edge points to a worn seal.
Shut the supply valve and see if the running stops. If it does, the fill valve is passing water.

What a plumber replaces

For a running toilet, the usual repairs are a new flapper, a new fill valve or both. Many plumbers replace the whole set of tank parts when the toilet is more than ten years old, since the rest of the rubber is the same age. The work usually takes less than an hour. If the seat at the bottom of the tank is pitted, they may use a flapper that fits over it or a repair kit.

Ask which parts are being replaced and ask to keep the old ones, since the old parts show you what failed. Make sure the new fill valve is adjusted so the water stops an inch below the top of the overflow tube.

Check before you buy parts

Flappers and fill valves are cheap, but they come in many shapes. A flapper for a three-inch flush valve will not fit a two-inch one, and the wrong size will never seal. Take the old part or a photo to the store, or note the brand and model on the inside of the tank. If you are not sure, a plumber can bring the right parts.

How much water does it waste?

A toilet that runs steadily can waste hundreds of gallons a day. To find out whether yours is leaking when you are not sure, read your water meter, shut off every fixture and wait fifteen minutes. If the meter still moves, something is leaking, and a toilet is the first place to look. Another quick check is to shut the toilet's valve for the night and see if the tank is empty in the morning.

Running toilet or phantom flush?

A toilet that refills by itself every ten to thirty minutes is called a phantom flush. The tank is losing water slowly through the flapper, and the fill valve tops it up. It is the same cause as a running toilet, just slower, and it is just as wasteful. The fix is the same.

Small habits that prevent running

Most running toilets start the same way: a rubber part gets old and nobody notices. A few habits catch it early.

Listen at night. A quiet house is the best time to hear a toilet refill on its own.
Lift the lid once a year and look at the flapper, the chain and the water level.
Replace the flapper on a schedule, every three to five years, before it fails.
Do not hang things on the handle or lean on the tank, which can bend the arm and tilt the chain.
Avoid in-tank bleach tablets, which can harden rubber and speed up leaks.
Know your shut-off valve. If a toilet starts to overflow or will not stop, turn it clockwise.

If you rent, tell the landlord in writing as soon as you hear the toilet running. A flapper is a minor repair, but a water bill that doubles is not, and a written note shows when you reported it.

Running toilets in Fountain Valley

Water in Southern California is expensive, and a running toilet adds to the bill every month. Many Fountain Valley homes have two or three toilets of the same age, and the flappers in them tend to wear out around the same time. If one runs, the others may be close behind.

Do the dye test on every toilet in the house, not just the one you can hear. Check the water meter with all fixtures off. If it moves, something is leaking. Some water providers in Orange County run rebate programs for efficient toilets, but programs change, so check with yours before you buy.

When it is not a running toilet

Some noises sound alike. A hissing line behind the wall can be a pipe issue and not the toilet. A gurgling bowl after a flush points to a drain or vent problem. A toilet that fills very slowly may have a clogged fill valve or a partly closed shut-off. If you hear running that does not stop when the toilet's valve is shut, look at other fixtures, such as a leaking tub valve, a dripping faucet or a leaking water heater relief valve.

Cost and timing

This website does not set prices. A flapper or fill valve repair is among the least expensive plumbing jobs, but the total depends on the parts, the time of day and the provider's visit fee. Ask for the price method before the visit, whether the visit fee counts toward the work and whether a warranty covers the parts and the labor. Many plumbers can do this job on the first visit.

About this referral service

Valley Toilet Help is a referral service and does not do plumbing work. When you call, you are connected to an independent plumber who sets their own prices and carries their own license and insurance. Ask about both.

Frequently asked questions

Why does my toilet run every few minutes?

The flapper is probably leaking slowly, so the fill valve has to top up the tank. A new flapper usually fixes it.

How do I know if it is the flapper or the fill valve?

If water spills into the overflow tube, it is the fill valve or float. If the level stays below the tube and the dye test shows color in the bowl, it is the flapper.

Will a running toilet raise my water bill?

Yes. A steady leak can add up quickly. Fixing it is usually inexpensive.

Can I fix a running toilet myself?

Often, yes. A new flapper or fill valve is a common home repair. If parts are corroded or the valve will not shut, call a plumber.

How long does the repair take?

Usually under an hour.

Who comes if I call this number?

An independent local plumbing provider. This website only connects the call.

Toilet running all the time? Get running toilet repair in Fountain Valley.