WATER PRESSURE


A common misconception is that water pressure is better nearer to our tanks. Your water pressure is a result of elevation. The lower your property is in relationship to our storage facilities (tanks) the greater your pressure will be. A water tank with 23 feet of water in it will have a water pressure of 10 pounds per square inch (P.S.I.) at the base of this tank. Therefore if a house was located near this tank, it would only have 10 P.S.I. of pressure, but if that house was located at an elevation of 230 feet lower than the top of this tank it would have a water pressure of 100 P.S.I.   The Districts CANNOT CHANGE the water pressure within the water system without changing the elevation of our tanks.
 

Water pressure is often confused with volume.

Common complaint: "my water pressure is bad because it takes forever to fill my bathtub"

Water pressure is force not volume. The higher the water pressure, the more water you are able to force through a restricted opening. The problem should be resolved by removing the restriction and not by the increased use of force. When we investigate a low pressure complaint, we inspect for the following problems.

Domestic hot water systems that use oil fired furnace and tank-less coils.

Water saving devices and fixtures.

Internal plumbing with small pipe, too many elbows and long runs.
 


IF YOU THINK YOU HAVE A PROBLEM, THE FOLLOWING TEST MAY HELP.


STEP 1)

Fill a five-gallon pail with one gallon of water using a milk jug or some other container that holds one gallon of water. Mark the water level on the inside of the five-gallon pail. Add another gallon of water and mark the water level. Continue this until the pail has all five marks. Empty the water from the pail.

STEP 2)

Open the hot water valve in bath tub and set the empty five-gallon pail under bath tub faucet for one minute. This should fill the pail to more than three gallons in one minute. Record results.

STEP 3)

Open the cold water valve in bath tub and set the empty five-gallon pail under bath tub faucet for one minute. This should fill the pail to more than three gallons in one minute. Record results. The hot and cold results should be similar.

STEP 4)

Open the cold and hot water valve in bath tub and set the empty five-gallon pail under the bath tub faucet. The pail should fill in less than one minute. Record results.

STEP 5)

Open the hot water valve to the shower head and set the empty five-gallon pail under shower for one minute. This should fill the pail to more than two gallons in one minute. Record results. If you results are less than 2 gallons, remove the shower head.

STEP 6)

Open the cold water valve to the shower head and set the empty five-gallon pail under shower for one minute. This should fill the pail to more than two gallons in one minute. Record results.

STEP 7)

Open the cold and hot water valve to the shower head and set the empty five-gallon pail under shower for one minute. This should fill the pail to more than three gallons in one minute. Record results.
 

You should be able to obtain results similar to these at pressures as low as 25 pounds per square inch.

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