Shower Heads - The optimal water pressure for a shower head is between 40-60 PSI. Below 40 PSI the flow of water may be weak and unsatisfying, while over 60 PSI it may be uncomfortable or even painful.
If your water pressure seems low, the first step should be to test how much pressure you're actually getting from the shower head. A typical home's water pressure should be somewhere between 45 to 55 psi (pounds per square inch).
GPM means Gallons Per Minute. Also known as "flow rate", GPM is a measure of how many gallons of water flow out of your shower head each minute. Since 1992, a maximum of 2.5 GPM is the federally mandated flow rate for new shower heads. This means no more than 2.5 gallons of water should flow out each minute.
A flow rate between 10 and 15 litres per minute is considered acceptable but can be improved. A flow rate that is above 15 litres per minute will be regarded as good.
A 2.5 gpm shower head will have a better pressure and shower experience than a 1.5 gpm shower head. A 1.8 gpm shower head would have a better pressure and shower experience than a 1.0 gpm shower head. Another drawback of low flow shower heads boosting the pressure is the temperature instability.
Normal psi for a home pipe system is between 30 and 80 psi. While you don't want the psi to be too low, it violates code to be above 80. Instead, you should aim for a psi that's between 60 and 70.
Yes. High-pressure shower heads increase water pressure either by decreasing the flow rate or using a compression chamber.
For water conservation purposes, most plumbing codes require faucets and showering devices to not exceed a certain maximum flow rate. Removing the flow restrictors could cause these devices to no longer meet these codes.
The most common cause of low shower pressure is a blocked showerhead, as a result of limescale build-up. These blockages obstruct the water flow, leading to reduced pressure over time. Most showers are fitted with a filter, protecting the pipework from debris, but this can become partially blocked by scale.
Low pressure in a shower can be caused by several issues such as a clogged showerhead, a worn-out mixing valve, closed valve, leaking pipe, or even a faulty water heater.
Causes of low water pressure in the shower
However, there are other causes that you can fix, such as: Limescale and sediment build-up causing low water pressure in the shower head: This can be fixed by simply cleaning or replacing the showerhead.
High water pressure: It feels great in the shower, but it may be costing more than you think. High-pressure water can cause serious problems, like pinhole leaks, in your plumbing, and it can severely shorten the life of your water heater, dishwasher, boiler system, and washing machine.
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.
The ideal water pressure for a house will be somewhere in the range of about 45 to 65 psi. Anything higher than 80 psi can cause damage, and anything much lower than 45 psi may result in issues when you use your shower, toilet, dishwasher and other water-consuming appliances.
“Harsh water pressure can theoretically disrupt the skin barrier, leaving you more like to get inflamed and irritated,” explains Dr. Gohara. As an alternative, opt for water regulators to make sure your pressure isn't so hard that it literally hurts.
Expensive Water Bills: If your water bills seem a lot higher than expected, you're using more water than usual. This can be a sign that your pressure is too high. Clanging Pipes: As high-pressure water moves through your plumbing, it doesn't have enough room to move evenly.
If you have a combi boiler or unvented system, you're unlikely to experience any issues with low water pressure. However, with a gravity fed system, you may run into problems if you don't buy a shower suitable for your water pressure.
Clogged Shower Head
Usually, this is a result of a build up of calcium or lime scale. These mineral deposits build up over time, accumulating on shower heads. This often clogs the water coming from the shower head causing lower water pressure or even an entire stoppage of water altogether.
Get your measuring jug (with a wide enough rim so you catch all the water) and a timer. Place your jug directly under the shower head and switch on your shower. Use your stopwatch to measure how long it takes to fill the jug. Longer than 6 seconds?
Showerheads clog over time because of a buildup of mineral deposits—specifically calcium. You may notice water spraying out of the nozzle in random directions, part of your showerhead is completely clogged, or poor water pressure.
Adjust the Pressure-Reducing Valve
Protruding from the top of the valve is a threaded bolt. To raise pressure, loosen the bolt's locking nut, then turn the bolt clockwise. Use the pressure gauge to determine when you reach a water pressure around 50 PSI. Then, tighten the locknut to secure the valve.
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.
A fast drop in only one faucet means there's a problem with the faucet. Rapid low pressure affecting one area of the house may mean a corroded pipe issue. An abrupt water pressure drop affecting the whole house may mean a water main break (municipal water) or a well pump problem (well water).