Typical problems encountered in residential plumbing are dripping faucets, running toilets, slow drains, low water pressure, and water heater failure. Almost all of them warn you weeks before they turn into an expensive repair.

Plumbing problems rarely show up overnight. A faucet drips a little louder. A toilet runs longer after each flush. A shower loses pressure, or the hot water runs out sooner. Those are the sounds of something wearing out. The issues that fill a plumber’s schedule are predictable, and once you know the cause behind each one, telling a quick fix from a call you shouldn’t put off gets easier. Catch a small leak early, and you avoid the water damage a late one brings.

What Are the Most Common Plumbing Issues in a Home?

Six problems account for most of the service calls we run. Each one starts with something you can see, hear, or feel.

Plumbing Issue	What You Notice First	Usual Cause
Dripping faucet	A steady drip after the handle is off	A worn-out washer or cartridge
Running toilet	Water runs between flushes	A failing flapper or fill valve
Slow drain	The sink or tub empties slowly	Grease, hair, and soap buildup
Low water pressure	Weak water flow at one or more fixtures	Mineral deposits, pipe corrosion, or a hidden leak
No hot water	Lukewarm showers and strange noises	Sediment buildup inside the water heater
Wet spot in the yard	Soggy grass or standing water	A leak in the underground water supply line

They all follow the same script. A part wears down, water finds the weak spot, and the trouble grows where you can’t see it. A dripping faucet costs you money. A slab leak under the foundation costs you the foundation.

Why Do Leaks and Running Toilets Waste So Much Water?

Small leaks are the most underestimated plumbing problem in residential homes. The average household loses more than 9,300 gallons of water every year to leaks, and household leaks nationwide waste close to 1 trillion gallons annually. Fixing the easy ones can cut a water bill by about 10 percent.

How much water does a dripping faucet waste?

A leaky faucet usually comes down to a worn-out washer, a bad cartridge, or a loose packing nut. The parts are cheap, and the drip is slow, so the repair sits on the to-do list for months. The math should change your mind, though. A fixture leaking at 10 drips per minute wastes more than 500 gallons of water a year.

Why does my toilet keep running?

A running toilet is almost always the flapper or the fill valve. The flapper stops sealing, water slips into the bowl, and the fill valve refills the tank to make up for it. Pour a few drops of food coloring in the tank and wait 10 minutes. Color in the bowl confirms the leak. This is one of the highest-volume water wasters in the house because it never stops.

What about leaks you cannot see?

A minor leak inside a wall or under a slab shows up on the bill before it shows up on the floor. Watch for warm spots underfoot, the sound of running water when every fixture is off, or a jump in usage. A family of four using more than 12,000 gallons of water per month in winter likely has a serious leak. Hidden leaks cause water damage and extensive damage to flooring and framing.

What Causes Low Water Pressure, Slow Drains, and Water Heater Trouble?

These three problems often share a root cause. Water measuring above 7 grains per gallon of hardness is classified as hard water, and most of the country falls at or above that line. Those minerals settle inside pipes, fixtures, and tanks.

Why is my water pressure low?

Weak pressure at one fixture usually means the aerator or cartridge is packed with mineral deposits. Clean or swap it and you’re set. Low water flow across the whole house is the bigger worry. It can point to pipe corrosion in old supply lines, a main valve left half-closed, or a leak between the meter and the house.

What causes slow drainage and drain clogs?

Kitchen drains clog with grease and food scraps, and the garbage disposal doesn’t really help. It just chops solids small enough to travel a bit farther before they settle. Bathroom drains fill with hair and soap instead. A toilet that plunges clear and then backs up again means the clog is deeper down the line. When every drain in the house slows at once, look at the main sewer line, where tree roots love to work into the joints.

We do not recommend chemical drain cleaners. They sit against the pipe wall, generate heat, and accelerate corrosion in older drainage systems. A cable or a video inspection finds the actual blockage instead of masking it.

Why is my water heater making strange noises?

Sediment buildup, almost every time. Minerals sink to the bottom of the tank, harden into a crust, and rumble when the burner fires through them. Rusty water, showers that go lukewarm early, and a puddle at the base are the other signs. That sediment makes the heater work harder, and you’ll feel it on your energy bill long before the tank quits.

How Do You Prevent Costly Plumbing Repairs?

Maintenance is cheaper than an emergency call, and most of it barely takes any time. A few habits catch a common plumbing problem while it’s still small and cheap.

• Check your water bill each month: A jump in usage with no change in habits is often the first proof of a hidden leak.
• Flush your water heater once a year: Draining the tank clears sediment buildup and protects the internal parts.
• Test your toilets twice a year: The food coloring test takes 10 minutes and catches a silent running toilet.
• Keep grease out of the kitchen sink: Grease cools and hardens in the line, and the garbage disposal does not change that.
• Watch your yard after a dry stretch: A green patch or soft ground when nothing has been watered points to a water line leak.
• Schedule regular inspections: A professional plumber can spot pipe corrosion and worn shutoff valves before they fail.

Call a licensed plumber when water is coming in faster than you can stop it, when there’s no hot water at all, when sewage backs up into a fixture, or when a repair means opening a wall or the slab. Check the supply hoses behind your water-using appliances too, since a burst dishwasher or washing machine hose floods a room fast.

Lasiter and Lasiter: Your Partner in Solving Common Plumbing Issues

Most plumbing issues follow a pattern we have seen for five decades. Lasiter and Lasiter Plumbing has served Dallas-Fort Worth since 1974 as a family-owned company. We look at how the whole plumbing system was built instead of only the fixture in front of us. We handle water heater repair and installation, leak repair, drain clog removal, toilet and sink repair, low water pressure diagnosis, and video inspection for residential homes and commercial plumbing customers.

We estimate in person rather than quoting over the phone, because an accurate number is worth more than a fast one. Call Lasiter and Lasiter Plumbing or request a free estimate online. Every plumbing problem is easier to fix early, and we are one call away when yours starts talking to you.

Frequently Asked Questions 

What is the most common plumbing problem in a house?

Leaks are the most common plumbing issue, and dripping faucets and running toilets lead the list. Both come from small internal parts that wear out, and both waste thousands of gallons of water a year.

Can I fix a slow drain myself?

You can clear a simple clog with a plunger or a drain snake. Call a plumber when the clog returns or when more than one fixture drains slowly, because those point to the sewer line.

How long does a water heater last?

Most tank water heaters last 8 to 12 years. Hard water shortens that range, so annual flushing and early attention to strange noises make a real difference.

Does a small leak really cause costly damage?

Yes. Water travels along framing and subfloor, and a leak that runs for weeks behind a wall causes structural damage that costs far more than the original repair.

Do you serve areas outside Fort Worth?

We work throughout Colleyville, Grapevine, Southlake, Hurst, Bedford, Euless, Keller, Trophy Club, Roanoke, and Flower Mound. Many of those homes are ones we plumbed during construction.