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Got Low Water Pressure? Here's Why

Does your water pressure need a boost? If the water coming from your faucets or shower heads is weaker than usual, you’ll want to narrow down the issue causing the low water pressure in your home.

Why Do I Have Low Water Pressure?

Whether it's low water pressure in your shower or your sink, hidden Low water pressure can be due to several reasons: the pipes in your home are clogged, the shut-off valve to your supply line is closed, or corrosion. You’ll want to investigate these potential issues to restore power to your faucets and showers.

Potential Issues

  • house is making noise
  • low water pressure throughout the house

Your cold water inlet has a shut-off valve that can be opened or closed to stop the flow of water during leaks or repairs. If the shut off valve is left only partially open, the water will not flow through freely. This can cause the water pressure to drop. It could also make noise as the water passes through the partially closed valve. As soon as the valve is reopened, your taps should work normally again.

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  • low water pressure in the sink
  • low water pressure throughout the house
  • low water pressure in the shower

Your water softener sits between the main water line and your taps. During the day, water only passes through the water softener while you're running your taps. But, each night, your water softener takes advantage of the low-use hours to do a little housekeeping. Between 2:00 a.m. and 4:00 a.m, it runs water through the backwash line to clean itself before the next day. If the seals on the water softener are split, torn, or shifted out of place, or if the piston is scored or scratched, water will leak through the backwash line. Since the backwash line catches the leaking water and sends it out to the drains, it can be a hard problem to catch before you're smacked with a huge bill.

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  • low water pressure throughout the house
  • low water pressure in the sink
  • low water pressure in the shower

A water supply line runs water into your house. If there's a restriction in the line, then you might notice low water pressure from a faucet. That's rather inconvenient when you try to take a shower or wash your hands.

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  • low water pressure throughout the house

The pipes in your home don't like cold weather any more than you do. If they're not kept above freezing, the water inside will turn to ice. As the water freezes, it expands, which can cause your pipes to burst or split open. Once the line has broken, the only thing preventing water from escaping is the ice itself. When that melts, it will start to leak. Depending on where the line broke, this could turn into a serious problem. In long-lasting extreme cold temperatures, the cold can creep into areas you wouldn't normally think it would. To help keep this from happening, turn up the temperature indoors. Even a couple of degrees can help keep your pipes safe and warm, and prevent freezing.

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  • low water pressure in washing machine
  • low water pressure throughout the house
  • low water pressure in the shower
  • low water pressure in the sink

The main water valve is the control that turns the water on or off to your entire home. There are only a few reasons this valve is turned off on purpose. If you've recently done repairs, the main control valve is often shut to prevent leaking while the water heater was repaired or replaced. The main water valve can also be shut to winterize a home for sale. If neither of these is true, it's likely someone may have bumped the valve into the "off" position. No matter how it happened, as long as there's no risk of leaks, you simply need to switch it back on and be on your way like nothing happened.

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  • low water pressure throughout the house
  • leaky faucet
  • water around the base of toilet

If there is water on the floor under the main water supply, it could be caused by condensation or a leak. Water supply lines can sometimes leak if the pH of your water is too low. A pH of 7 is neutral, and anything lower than that starts to become acidic, which can wear down copper tubing and brass fittings. Once a leak has sprung, you'll need to replace that section of the line.

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