Knowledge Builders

where is the main water line in a house

by Keith Collier II Published 3 years ago Updated 2 years ago
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3 Ways to Find a House’s Water Line

  1. Locate your Water Meter This method works for water meters that are located outside the house. ...
  2. Locate your Main Water Shut off Valve Depending on where you live again, your main water shut off valve will be located on external wall or inside the house. ...
  3. Look for an Outside Bib/Spigot

If your home has a basement or crawlspace, check there first. For homes built on a slab, check in the garage or near your water heater. The incoming water line usually comes through the foundation near the front side of your house. Follow this line up to the water meter.Jan 12, 2020

Full Answer

How to find the main water line to Your House?

To check to see if the leak may be coming from somewhere along the sprinklers, do the following:

  • Turn off the water supply to your irrigation system.
  • Make sure there is no running water anywhere in your home.
  • Make sure to check all your outdoor spigots for leaks.
  • Check the water meter. ...
  • If the water meter is not running, then you know that the leak is somewhere along your outdoor plumbing.

How do I find the water line into my house?

Tips for Locating the Water Shut Off Valve Within the House

  • In most cases, the shut off valve will be near the perimeter of the house.
  • Keep your focus on-grade. ...
  • Track a line from the water meter to the house. ...
  • Sometimes the shut-off valve will be located behind a plastic access panel.
  • A PEX plumbing manifold is a type of plumbing collection point that is increasingly being installed in newer homes. ...

How to tap into the main water line?

To tie into existing plumbing add a “T” joint. Line up the new “T” joint against the existing pipe and mark the section to be cut out. Take your Sawzall and cut through the existing pipe, making room for the “T” joint. Line the new joint with primer and glue, then join the pipes together. Now that’s a good overview of the entire ...

How to install a water line to a house?

  • Identify the water supply line you plan to tap and determine where to drill a hole to accommodate the refrigerator water line you will connect. ...
  • Drill a 1/4-inch hole to run the tubing through.
  • Follow the same steps as above to install either a self-tap saddle valve or a tee stop valve.

Where is the main water line located?

Why is it important to locate the main water line to your house?

How Do I Know Where My Water Pipes are?

What is a pipe locator?

How to check if water line is leaking?

Where is the shut off valve located?

Where is the water pipe buried?

See more

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How do I find the main water to my house?

The main water may come through the concrete floor or through the wall. The valve is typically within three to five feet of where the main water enters. In some cases, the main water may enter in a different area, like a mechanical room, up through the floor, near the water heater or furnace.

What does the main water line look like in a house?

0:062:12The Main Water Line to Your House and How it Works - YouTubeYouTubeStart of suggested clipEnd of suggested clipFor all of the house from here on up this runs from here over to your water heater. And branches outMoreFor all of the house from here on up this runs from here over to your water heater. And branches out throughout the house. So if you ever have a water leak inside of the house.

How do I shut the water off to my house?

0:004:51How Do I Turn Off the Water Main Supply to My House? - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou're gonna need to open it with a meter key. And quickly look this wrench in on top of the valve.MoreYou're gonna need to open it with a meter key. And quickly look this wrench in on top of the valve. And turn it it should turn 90 degrees 180 degrees somewhere in there depending.

Where do water pipes run in a house?

Where Does the Main Water Line Enter a House? Your main water supply line enters your home at ground level or below. In warm weather zones, the line usually sticks up out of the ground just outside the home and then enters the side of the house.

Where is the main water shut-off valve outside?

If you have municipal water service, here's how to find your outside water shut-off valve: Look for a rectangular or round cover that will be near the edge of your property, often between the curb and the sidewalk. Some water main valves are located along an alley, rather than the street.

How do you trace a water line?

Today, the best tool for the job is ground penetrating radar (GPR) as it accurately maps metal and PVC pipes. Traditional pipe locators use electricity and magnets to locate underground pipes.

Where is the main water valve?

Typically, it will be located on the perimeter of the house, since that is where the water first enters your house. Also, stay on the side of the house that is facing the street. Your water main begins at the street and usually heads in a straight line to your home.

Will pipes burst if water is turned off?

“This evening before you go to sleep, go out and turn that main turn off, turn some faucets on so your pipes can drain. They can't burst if there's no water in them to freeze," Director of Public Works for the City of Houston Carol Haddock said.

Is it okay to shut the water off to your house?

Shutting off the main valve that controls all the water for your home is the best protection against catastrophic water damage. Everyone in your home should know where the main water shutoff valve is located so they can stop the water in an emergency. And you should turn it off whenever you leave home, even overnight.

Do water pipes run under the house?

How Does Water Get Into My Pipes? Water travels from the city's main water line to your house water main, a large (¾ inches or larger) pipe that leads into your home. This supply line is buried deep enough underneath your property that it won't freeze, and it runs from the ground directly into the home.

How do I find the underground water line?

To find an underground water pipe, you'll need to use a utility line locator that can find both metal and plastic pipes. Depending on the area in which you're currently working, these lines could be made of either material. So if you want to get the most accurate results, you'll need a tool that can find both.

Does the main water line go to the water heater first?

Water Heaters Your cold water supply is immediately ready for you, but the hot water has to go through the water heater first. One pipe carries the cold water to a water heater. From there, a hot water line moves the heated water to the fixtures and appliances that require hot water.

What is the main water line?

A water main is the pipe that delivers clean water to your home from your municipal water utility. The water main connects to your private water service line, which is typically located below ground on your private property.

Does the main water line go to the water heater first?

Water Heaters Your cold water supply is immediately ready for you, but the hot water has to go through the water heater first. One pipe carries the cold water to a water heater. From there, a hot water line moves the heated water to the fixtures and appliances that require hot water.

What size is the main water line in a house?

The most common pipe diameter for water mains is 6 to 16 inches, with 8, 10, and 12 inches also being used. Branch lines providing service to individual homes, offices, buildings, and businesses vary in size from as small as half an inch in diameter up to 6 inches.

How deep is a water line buried?

18 inchesUnderground piping shall be buried not less than 18 inches below the surface of the ground unless otherwise protected. All underground piping shall be protected from corrosion by coating in compliance with Section 533(b) or equivalent.

Physically Search For The Cut Off Valve

Search for your house's main water cut off or shut off valve. Stay on the inside of the house and look around the perimeter of the house, on the si...

Search Your Property Inspection Report

If you still cannot find the cut off valve after physically searching for it, an alternative is to check the property inspection report that was co...

Locate The Streetside Valve

There is another valve located at the beginning of your water main, at the boundary line of your property and the street or sidewalk. Find the grou...

Turning Off Water in Your Home: Detailed Instructions

If you have a water leak or just need to turn off the water in your home for remodeling or repairs, you must turn off your water upstream at some p...

Try to Cut Off Water Close to Source

If you have a leak in your toilet, sink, clothes washer, or bathtub (with exposed plumbing), your first option should be to shut off water close to...

Water Main: Locate Water Cut Off Valve within The House

Shutting off the water at the cut off valve located within the house is the best option. It will cut off your home's entire water supply, allowing...

Water Main: Locate Water Cut Off Valve Outside by Meter

If the previous two options fail, try to shut off the water main outside.This will cut off all water in the house. This is the most drastic option...

Where Does the Main Water Line Enter a House?

Your main water supply line enters your home at ground level or below. In warm weather zones, the line usually sticks up out of the ground just outside the home and then enters the side of the house. The plumbing system at this point includes a valve so the householder can turn off the water supply in the case of a leak, which will be located in a box underground or on the side of the house, and it may also include a hose bib for watering the yard and a backflow preventer. In cold zones, the main water supply line often enters the house below ground level in a basement or similar space. At a point near where the water line enters the house, you'll see at least one valve. If your home is supplied with well water, the water line usually enters your home below ground level and leads into a pressure tank. Again, you'll see a valve for turning off the supply.

Where does the water line go when you have well water?

If your home is supplied with well water, the water line usually enters your home below ground level and leads into a pressure tank. Again, you'll see a valve for turning off the supply.

How to tell if water line is leaking?

To determine if the water line is leaking, shut off the main water valve to the house and remove the cover on the water meter box. If the small leak dial on the meter is moving at all, water is escaping from the water line. Contact the local water department to determine if a contractor or the water department will repair the line.

How far below ground does a water line run?

Water supply lines connect the household plumbing to the local mains water supply or sometimes to a well in rural areas. The lines run at least 3 feet below ground, which can make them difficult to find. Usually, if you know where the line enters the house and the location of your water meter or well, you know the line runs between these two points.

How to find water meters?

To find your water meter, check the sidewalk or parking strip outside your home for a square metal cover set into the ground. If you lift up the cover, you should be able to see the water meter inside. If you can't locate your water meter, contact your local water supply company.

What happens if your water line leaks?

If your water supply line has a leak, the soil above it may be damp or soggy in patches anywhere when the weather is dry and you haven't irrigated your yard.

How to find a well?

You can find a well by looking for the well cap in the yard or land surrounding the house. The casing of a well protrudes at least 8 inches above ground level and is covered by a cap to prevent contaminants from falling into the well. The cap clamps or screws onto the casing. The water line that runs from the well into the home lies below ground ...

How to track water lines to house?

If you are on a ground-level floor, you will be looking down. Track a line from the water meter to the house. Go outside and stand on top of the water meter utility box. Imagine a straight line extending from that point to the nearest point on your home's exterior perimeter.

Where is the water shut off valve located?

Search for your house's main water shut off valve on the inside of the home. Typically, it will be located on the perimeter of the house, since that is where the water first enters your house. Also, stay on the side of the house that is facing the street. Your water main begins at the street and usually heads in a straight line to your home.

How to clean a water meter?

Do not discard the sand or dirt. If you live in a climate that freezes in the winter, this sand or dirt is required to prevent the pipes from freezing and bursting. After clearing the box, you will see the glass-covered meter that may have a secondary cover to protect the glass. Ignore this as it has nothing to do with shutting off the water. You may find two valves in the utility box.

What to do if you can't find water shut off valve?

If you still cannot find the water shut off valve after physically searching for it, one alternative is to check the property inspection report that was completed for you when you were in the final phases of purchasing your home.

Where to find shut off valve on property inspection?

Look in the plumbing section of the report. This section should locate the shut-off valve and have a photo of the valve. Even if the water system was not defective at the time of the property inspection report, the report should still note the locate the shut-off valve as a matter of course.

What is street side valve?

Street Side Valve: This will be on the street side of the water meter. This turn-off is designed so that only the water company can turn it off with a special tool. Do not turn this off. Even if you manage to get a wrench on this, you may find it exceedingly difficult to turn. Also, there may be legal ramifications associated with turning off the water company valve.

Can you shut off water in your home?

If you have a water leak or just need to turn off the water in your home for remodeling or repairs, you must turn off your water upstream at some point. In all homes, you can shut off the water at the main water cut off valve. This turns off water to the entire house, even outside spigots. Luckily, many newer homes implement a number ...

How to identify a home's water main?

Your water main can be easily identified by finding your home’s water meter, which records the incoming flow of water for accurate billing at the end of each month.

What Is a Sewer Line?

If your home is connected to a sewer system, there is a sewer line that bridges the gap between your home’s drains and the main sewer drain. This line is located under the ground of your yard and is considered part of your plumbing system and your responsibility for maintenance and repairs. Sewer lines are typically four to six inches in diameter and sloped downwards to promote the flow of water away from your home and into your city’s sewer.

Why do you need a shut off valve on your water main?

This valve can be crucial during a serious plumbing emergency, as it will stop the flow of all water into your home’s plumbing system. If you have a serious leak or other problem, using the shutoff valve can prevent flooding, water damage, and water waste.

What to do if sewer line is compromised?

If the sewer line has been compromised, your plumber can perform trenchless pipe repairs to restore the line’s integrity while maintaining your beautiful landscaping.

What are the two pieces of plumbing?

Even if you think you understand your home’s plumbing fairly well, you may be missing two crucial pieces: your water main and your sewer line. These components bring fresh water into your home and remove the water waste created, thus providing the input and output for your home’s plumbing system.

What is the biggest threat to sewer lines?

In addition to clogs, the biggest threat to your sewer line is tree roots. Finding out where your sewer line is located and planting only sewer safe trees in this area of your yard can reduce the risk of tree root damage to your sewer line.

Where is the main shut off valve located?

Make sure you know where your main shutoff valve is located (typically in the garage, basement, crawl space, or in a valve box outside the house) and ensure it is in good shape and easily accessible. This can help you save time, money, and stress during a serious plumbing emergency.

Where does water leak in a house?

Another common source of a water leak inside the house that may not be visible is from piping that runs under a slab or basement floor. That is why it is so important to drain out the house plumbing and ‘sound out’ the pipes before jumping to a conclusion.

How to tell if a water line is leaking?

Only in extreme cases, such as a ruptured service line or the actual tap connection becoming dislodged from the city main, will there be a drop in pressure. Typically the first sign of a leak is the sound of running water, or a humming sound in the pipes. A leak will create a vibrating sound on your pipes and frequently be audible long before ...

How to check if a toilet is running?

A simple way to check for a running toilet is to close the valve under the toilet and see if the water meter stops moving. Another simple way to check for a running toilet is to place some food or clothing dye inside the toilet tank. Then see if the dye appears inside the bowl itself after a few minutes. Another common source of a water leak inside ...

What is Balkan water service?

Balkan Sewer And Water Main Service is the largest house sewer & water service line replacement company in NYC. Balkan is licensed, bonded, and fully insured. As a family run business in continuous operation for well over 60 years, a Balkan 10 year unconditional guarantee on replacements means that they continue to stand by their work years after the installation has been completed. Being expertly equipped from a 48,000 square foot facility, having dozens of trucks, heavy moving equipment, backhoes and pneumatics ensures prompt and professional service every time. Having a highly trained, skilled, and dedicated team ensures long lasting installations.

What does it mean when you hear water running?

If you hear the sound of running water, unfortunately you have a water main leak on the service line to the street. You will in fact require a water main repair, or a full replacement. If there is no sound on the line after closing the main valve, and draining your plumbing system, then the leak is not on your main water line to the street.

What does it mean when the water meter stops moving?

If all the dials on the meter completely stop moving that means that there is no longer any water running through the meter. The 2nd step to take is to drain out the house plumbing. This ensures that water is not leaking inside the house from another source, such as a toilet, or an underground pipe. Typical water meter.

What to call if water main breaks?

Call 311 for verification. Many people are reluctant to notify the authorities when they suspect a water main break or leak. However the NYC DEP will respond in a timely and professional manner when an inquiry is made through the 311 system regarding a line leak. When speaking to the 311 operator of the DEP it is important to clearly state ...

What is the main line of a drain?

The “main line” is the large-diameter pipe that carries waste from every smaller drain in order to eventually exit your home. Waste from every shower, sink, garbage disposal, and toilet makes its way here. Think if it as the major “sewer highway” in which all smaller “drain roads” connect. This drain line leaves your home and runs through your yard.

Where does the drain line go in the yard?

This drain line leaves your home and runs through your yard. It then eventually connects to the city sewer system or your septic tank.

What Is A Main Sewer Line Cleanout?

Before approaching the best method for drain cleaning or repair you first have to locate the cleanout. So, let’s talk about how you can do that.

What Causes A Clogged Sewer Pipe?

Due to its large diameter, the main sewer line doesn’t get clogged frequently. Blockages in a smaller-diameter branch drain are more common than a clog in the main sewer line. However, there’s the likelihood of clogs occurring if large quantities of debris are flushed down the drain.

What to do when there is a blockage in the main drain?

When there’s a blockage in the main drain, you’ll need to reach the clogged sewer pipe to auger it clear of the obstructions. Stubborn clogs or foreign objects such as tree roots will require hydro jetting in order to resolve the problem.

Why does my sewer pipe smell?

A sewer drain pipe has a pungent odor because of decomposing waste materials that release strong sewer gas. This is why, when there’s a sewer clog somewhere down the line, you need to act fast. (It’s also why there is a safety concern when sewage backup occurs.)

What are sewer lines made of?

However, earlier sewer lines were also made from clay, cast iron, and fiber. These older types of material commonly led to a damaged a sewer line needing replacement, and were susceptible to tree root intrusion. The material the pipe is made from is typically identified upon a sewer scope inspection.

Number of Plumbing Fixtures

It should go without saying that the more plumbing fixtures you have in the house, the more water you’ll need at any given time. This translates to needing larger water lines when you have many different plumbing fixtures. Consider the number of these fixtures when deciding on a water line size:

Distance From Water Main

When deciding what size water line your house needs, you need to consider how far away you are from the city’s water main. The length of the run of the pipe can determine if you need to go up a size or not. If you find that your house lies far away from the water main, a larger water line could help improve your house’s water pressure.

Building Classification

If you happen to be a landlord rather than a homeowner, you should also be aware that the classification of your building matters as well. The requirements for a larger, commercial building are quite different from the requirements of a singular home.

What is the best pipe for a water main?

Water main pipes can be made from a variety of materials, including metal, clay, concrete, and plastics. In terms of size, the most common water main pipe diameter ranges from 6 to 16 inches, although there are 8, 10, and 12-inch options available as well. Here is a list of the most common water main piping materials:

Why do we need water mains?

In order to ensure reliable water supply for homeowners and businesses in a community, the water mains pipes need to be made from the right materials. The piping materials used for main water supply have changed over the years, with the development of new technologies.

What type of water pipes are used today?

Although many of these pipes are still used today, especially those made from ductile iron, most new water main applications use HDPE and PVC pipes owing to their unique properties.

Is copper a good material for water distribution?

Both copper and PVC have their uses in modern water distribution systems. Copper, on one hand, is a strong, yet flexible metal that is often the first choice for home plumbing. Professional plumbers and contractors often use copper because it can be used to form pipes with thin but strong walls. However, copper is prone to acidic corrosion.

Where is the main water line located?

The main water line will be found underground between the shut off valve and the water meter. If you don’t find the shut off valve outside the house, it will definitely be in the house.

Why is it important to locate the main water line to your house?

It is important to locate the main water line to your house in case you suspect you have an underground leak, want to establish what type of pipe you have or when you want to replace the pipe.

How Do I Know Where My Water Pipes are?

If you use city water, there is a main water pipe which runs underground from the street through your front yard to the house. This pipe can either exit the ground and enter the house near the street side wall, or it may enter the house from the ground.

What is a pipe locator?

When you want to eliminate errors, you can buy a device called a pipe locator. These locators are fitted with sensors that can detect metal and plastic water pipes.

How to check if water line is leaking?

To check if your main water line to you house is leaking, start by turning off your main water shut off valve. Turn it all the way clockwise if it is a gate valve or perpendicular to the pipe if it is a ball valve.

Where is the shut off valve located?

Usually, shut off valve are located very close to the water meter. Follow the water meter’s cold water supply pipe and you will surely find your shut off valve.

Where is the water pipe buried?

The pipe will be buried between where the well and pressure tank are located . These pipes are easier to find than main water lines from city water.

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