Depends on the place your located on the planet as some places have as little as 8 PSI and other almost 200 PSI
What pressure per square inch water is. -In a typical home on city water you have a PRV set to 50-70 psi
If it is fresh water, and the surface is at sea level, then the pressure at the surface is 14.69 psi. As you submerge, then the pressure from the weight of the water above you is added to the air pressure above the water. For each foot that you descend, the water pressure will increase by 0.4331 psi, so at 328 feet deep, the water pressure is 142.0568 psi. Add the 14.69 psi air pressure to get 156.7468 psi.
70ish psi if your on city water, well waters gana be less
At 300 feet of water depth the pressure is about 130 psi
Yes pressure is pressure
Hydrocleaning has various levels. "Low-pressure water cleaning" uses water pressure less than 5,000 psi, while "High-pressure water cleaning" uses water pressure between 5,000 to 10,000 psi. Higher still is "High-pressure water jetting" which is between 10,000 to 25,000 psi, and finally "Ultrahigh-pressure water jetting" uses pressures above 25,000 psi.
Call your city hall or Water Works for the information of what PSI it is set at.
Pressure doesn't change when you change substance, 120 PSI in water equals 120 PSI in air.
Optimal household water pressure should be between 40 psi - 80 psi. If water is supplied by public water usually they supply the minimum pressure. If you have more than 80 psi, a pressure reducer is recommended.
PSI stands for Pounds per Square Inch, it is a measurement of pressure. You can't "add psi". The only way to increase your water pressure is with a booster pump. You cannot add pressure, you have to mechanically add a force to pressurize the water (Usually by forcing it into a tank with an air bladder).
At 5,400 feet of water depth the pressure is about 2,341.1 psi
406 meters / 1,332.02 feet of water depth has a pressure of about 39.3 atmospheres or 577.6 psi.