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13 Most Common Plumbing Mistakes That You Should Avoid

common plumbing mistakes

Have you ever had a plumbing issue in your home? If so, then you know how frustrating it can be when water starts to flood the kitchen or bathroom.

Not only is there an emergency repair needed, but also replacement of damaged items. All because someone didn't think about regular plumbing mistakes before they acted!

But did you know that there are a lot of common plumbing mistakes that homeowners make?

By avoiding these mistakes, you can help prevent plumbing problems from happening in the first place!

So if you're ready to learn more, keep reading for the 13 most common plumbing mistakes that you should avoid.

#1 Relying on Drain Cleaners

If your drains are full of hair or grease, it's tempting to reach for the liquid drain cleaner. However, this is one of the most regular plumbing mistakes people make.

Liquid Drain cleaners are harsh chemicals that can damage your pipes and cause even more clogs. They can also be dangerous to use, so it's best to avoid them altogether.

Instead, try a plunger or a plumber snake to clear your drain line. If you're still having trouble, give a professional plumbing contractor a call.

They'll be able to handle the problem quickly and efficiently, without damaging your pipes.

#2 Overusing Drain Cleaner

Overusing drain cleaners is one of the most regular plumbing mistakes. This is because many people do not understand how drain cleaners work.

Drain cleaners are designed to break down organic matter, such as hair or grease, that has buildup in your drain.

However, they also contain harsh chemicals that can damage your pipes.

When used too frequently, these chemicals can eat away at your pipes, causing them to leak or even burst. In addition, drain cleaners can be dangerous if used improperly.

For these reasons, it is important to use drain cleaners sparingly and only when absolutely necessary.

If you have a slow drain, there are other methods, such as a plunger or a plumbers’ snake, that can be used to clear the blockage without damaging your pipes.

#3 Failure to Turn Off the Water

The number one plumbing mistake people make is failing to turn off the water. This may seem like a no-brainer, but you would be surprised how often people forget to do this simple step.

When you are finished using water in your sink, tub, or toilet, make sure you turn the knob all the way off.

This will help prevent water damage in your home and save you money on your water bill.

In addition, it is important to know where your main water shut-off faucet is located. This will come in handy in the event of a leak or other plumbing emergency.

#4 Taking a Faucet Apart and Forgetting How to Put it Back Together

Have you ever taken a faucet apart to clean it, only to forget how to put it back together? This is a regular mistake people make, but it's easily avoidable.

Before you take your faucet apart, be sure to take pictures or draw a diagram of how it is currently assembled.

This will help you put it back together correctly when you're finished.

#5 Trying to Force a Stuck Shut Off Valve

If you have a shut off faucet that is stuck, do not try to force it open with a wrench or pliers. This is one of the most usual plumbing mistakes people make and it can damage your pipes.

If you cannot turn the knob by hand, there may be something blocking the valve.

Try using a plunger to dislodge the obstruction. If that doesn't work, you may need to call a professional contractor to take a look.

#6 Using Too Much Muscle On a Stuck Shut Off Valve

Turning a stuck shut off valve is one of the most common plumbing mistakes. When a valve becomes stuck, it is tempting to use a lot of force in an attempt to get it moving again. However, this is almost always counterproductive.

The valves are designed to be turned in a slow, steady motion, and applying too much force will only damage the valve and make it even harder to turn.

In addition, it is important to be careful not to over-tighten the tap once it does become loosened.

#7 Handling Plumbing Jobs without the Necessary Spare Parts

When you're in the middle of a plumbing project, it's important to have all the necessary spare parts on hand.

This is one of the most common mistakes people make, and it can end up costing you a lot of time and money.

For example, if you're replacing a faucet, be sure to have a new washer and O-ring on hand. If you're working on a toilet, be sure to have a new flapper and tank ball.

If you don't have the necessary spare parts, your job will take longer to complete, and you may end up having to make an emergency trip to the hardware store.

#8 Installing a Saddle Valve for an Ice Maker or Humidifier

A saddle valve is a small valve that is used to connect a water line to an ice maker or humidifier. It is one of the most common mistakes people make when installing these appliances.

The problem with saddle valves is that they are not designed for long-term use. Over time, they will start to leak, and eventually, they will fail completely.

If you are installing an ice maker or humidifier, be sure to use a properly sized faucet that is designed for the job. This will save you time and money in the long run.

#9 Using Inappropriate Tape or Wrapping a Thread Tape Backwards

If you are working with tape or thread, it is important to use the right type of tape for the job. This is one of the most common mistakes people make, and it can lead to serious problems.

For example, if you are using Teflon tape on a gas line, it can cause a dangerous leak. In addition, if you wrap the tape backward, it will not adhere properly and could come loose.

#10 Not knowing the location of water shutoff valves

One of the most regular plumbing mistakes is not knowing the location of your water shutoff faucets. This can be a problem if you have a leak or other emergency.

You should know where your main water shutoff faucet is located, as well as the shutoff valves for each individual fixture. If you don't, take some time to familiarize yourself with their locations.

#11 Fixing Plumbing Issues on Your Own

While it may be tempting to try to fix plumbing issues on your own, this is usually not a good idea. Plumbing is a complex system, and even small mistakes can cause big problems.

If you're not sure what you're doing, it's best to call a professional plumber. They will be able to diagnose the problem and make the necessary repairs.

Trying to fix plumbing issues on your own is one of the most common mistakes people make. It's usually best to call a professional plumber instead.

#12 Using a Handyman Instead of a Licensed Plumber

Handymen are great for a lot of things, but plumbing is not one of them. This is one of the most common mistakes people make, and it can end up costing you a lot of money.

Handymen are not licensed plumbers, and they often do not have the necessary skills or experience to properly fix plumbing issues. This can lead to further problems down the road.

If you have a plumbing problem, it's best to call a licensed plumber. They will be able to properly diagnose the problem and make the necessary repairs.

# 13 Failing to winterize pipes before winter

Failing to winterize your pipes before winter is one of the most common mistakes people make. This can lead to serious problems, such as frozen and burst pipes.

Winterizing your pipes is one of the most important things you can do to avoid problems during the winter. Be sure to disconnect all hoses and sprinklers, and insulate any exposed pipes.

Common Plumbing Mistakes: What to Do When You Run into Trouble

When it comes to plumbing, even a small mistake can lead to big problems. That's why it's important to be familiar with common mistakes so that you can avoid them in your own home.

Here are three of the most regular plumbing mistakes and what you can do to fix them:

  • Attempting to DIY - Many people think that they can save money by tackling plumbing repairs themselves.
  • Ignoring maintenance - Like any other system in your home, your plumbing requires regular maintenance to function properly.
  • Putting off repairs - When a plumbing problem arises, it's important to take action immediately. Ignoring a leaky faucet or clogged drain line will only make the problem worse.

By avoiding these common mistakes, you can keep your building system in top condition for years to come.

Frequently Asked Questions

How do you keep your home's plumbing system from breaking down or needing major repairs?

The best way to keep your home's building system in top condition is to avoid common mistakes, such as attempting to DIY, ignoring maintenance, or putting off repairs.

By taking these simple steps, you can avoid major problems down the road.

What is the most expensive plumbing problem?

The most expensive plumbing problem is usually a major repair, such as fixing a burst pipe. This type of repair can cost hundreds or even thousands of dollars.


There are a number of regular plumbing mistakes that people make, but by avoiding them, you can keep your home plumbing system in top condition.

Be sure to familiarize yourself with the location of your water shutoff valves, and don't attempt to fix plumbing issues on your own.

If you have a problem, it's best to call a licensed plumber. Winterizing your pipes is also important to avoid frozen and burst pipes.

By taking these steps, you can keep your home running smoothly for years to come.

Looking for a licensed plumber in your area? Give us a call today! We're always happy to help.

About The Author:

Scott Reyes, our proficient Managing Editor and a true plumbing aficionado with over 10 years of dedicated expertise. With an in-depth understanding of the plumbing industry, Scott is your go-to source for all things plumbing-related. His wealth of experience ensures that our content is not only informative but also a reliable resource for your plumbing needs. Dive into Scott's articles to tap into his extensive knowledge and insights.
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