The most accurate method is to buy a pressure gauge from your local hardware store and hook it up to a hose faucet. Check the pressure when all other faucets and water-using appliances are turned off to get a baseline reading. In general, you want the household plumbing to provide between 30 and 80 psi.
Adjust the valve underneath the sink
The shut-off valves underneath your sink play an integral role in controlling how much water goes through your pipes. If you wish to reduce the water pressure to a particular faucet, turn the valves clockwise by a quarter rotation.
This can be worked out with a flow test, using either a pressure gauge test kit or a simple Bucket Test. The Bucket Test can be measured by timing in seconds how long it takes to fill a 9-litre household bucket. More info on the Bucket Test can be found here.
Place the fingers on the inside of the wrist to locate the pulse. Now, take two fingers (preferably index and middle fingers) and place them just below the wrist creases on the thumb side of the hand. A strong pulse felt at the wrist correlates to a systolic blood pressure of at least 80 mmHg.
Clogged aerators and clogged cartridges are two of the most common causes of low water pressure in a sink. The aerator is the tip of the faucet that the water comes out of, while the cartridge is found underneath the sink handle and enables you to stop and start the flow of water.
Turning Up the Pressure
Your regulator will have an adjustment screw that can be adjusted to increase pressure with a clockwise turn of the main screw. It's usually a good idea to consult a plumber if you have to make a large adjustment to the water pressure coming into your home.
All you have to do is push your thumb down on the tire to feel the pressure. Underinflated tires will be soft. You will find your tires to be extremely stiff if they are overinflated. The tire pressure is proper if your tire is not too soft or too stiff as mentioned above.
Find the spigot closest to your source of water. Make sure all the taps and other water uses are turned off in your house. Now turn on the spigot and see how long it takes to fill the bucket. Dividing the number 60 by the time to fill the bucket will give you the gallons per minute number.
Water systems which operate at 1.0 bar pressure (10 m of drop) or greater are considered high pressure systems. Those with a pressure less than 1.0 bar are considered low pressure. When you're ready to choose a tap or shower, you'll find the water pressure it's suitable for will be clearly labelled.
A water pressure regulator, if you have one, is usually located where the main water line comes into the house and after the main shut off valve. This way if you need to work on or change the water pressure regulator you can simply shut off the water main to do so.
Over time sediment and scale can build up and restrict the water flow through your pipework. That's when your hot water tap can begin to trickle. If this is the issue, then you'll need a qualified plumber to inspect your hot water system.
If the water pressure regulator is not adjusted properly, you could have either too much, or too little pressure in your faucet or shower. With the right tools, you will be able to adjust the water pressure regulator by yourself instead of calling in the plumber.
If you have water pressure that's too strong, turn the valves clockwise by a quarter rotation to decrease the pressure. If you turn 1 of the valves, make sure to turn the other valve the same amount. Try turning the valves completely off and back on again to see if it fixes the problem on its own.
The most accurate method is to buy a pressure gauge from your local hardware store and hook it up to a hose faucet. Check the pressure when all other faucets and water-using appliances are turned off to get a baseline reading. In general, you want the household plumbing to provide between 30 and 80 psi.
In residential and commercial plumbing systems, install a water pressure gauge near the main water shutoff valve, which is typically near the point where the water supply enters the building.