Table of Diagnostic Steps for Poor Water Pressure from a Pump & Well System
Keep in mind that if water is running elsewhere in the building (another shower, sink, dishwasher, clothes washer, garden hose, etc) then the water pressure you will observe at your location will usually be reduced. This table can demonstrate that You're the boss, not your pump!
Table 2: Well Pump Runs, but Poor Water Pressure or No Water Pressure
Poor Water Pressure Cause
No Water at All
There is no water pressure.
See the water pressure problem diagnostic steps in this table (below) or go to our diagnostic article series beginning at NO WATER PRESSURE
If municipal building water pressure varies independently of the number of fixtures you are running then the incoming pressure may be changing. Install and monitor a pressure gauge at the water meter or main water shutoff valve.
If water pressure varies depending on the number of fixtures running then the incoming water pressure may be inadequate or the building piping diameter may be too small.
See the diagnostic items listed in this table (below)
A reasonable guess for the problem you are describing is a debris clogged or sticking pressure control switch. A reasonable guess for the problem you are describing is a debris clogged or sticking pressure control switch. If there is sediment or rust in the water supply, those can plug the opening into the bottom diaphragm on the pressure control switch which causes it to fail to respond as it should to a drop in water pressure.
I would replace the pressure control switch and I would be sure that there is no debris clogging the tube or a small diameter pipe that conducts water pressure to the switch.
On 2017-06-03 01:49:37.582485 by Rob
As water is running, pressure lowers at a slow steady rate from 50 to the lower 30's then all of the sudden drops to 0. The pressure switch won't trigger until a minute or so later. And then fills again. Pressure doesn't change unless we're using water so I know there aren't any leaks or backflow problems. I can't explain that sudden drop in pressure. Any ideas?
On 2017-05-25 21:32:32.021967 by (mod)
If the pump cannot reach shutoff pressure there are several causes such as a damaged impeller or pump motor or low voltage to the pump. A more complete list of causes and cures can be found in an article you'll see if you would please use the search box just above to find the InspectApedia article on WATER PUMP WON'T STOP RUNNING
On 2017-05-25 01:14:25.759471 by Lucy
I have new Check valve pressure switch and gauge and new water tank.
Pressure will only go to 22 and shuts off,
It is set to 32/50.
Replaced all this cause old one was doing the same .
Why won't it reach shut off pressure
On 2017-01-04 22:42:19.664280 by Anonymous
The water pressure on all of the faucets in the house is really low
On 2016-11-06 00:00:25.489927 by Anonymous
Just replaced the pump, the control box, the wiring and the pipe in a 400 got deep well. it worked great for about a week but now I am only getting about 26psi of pressure. I replaced the circuit breaker and the pressure switch and check valve too please help I have run out of ideas.
On 2016-09-15 19:57:49.653231 by (mod)
Crystal Please search InspectApedia for WATER PUMP WON'T STOP RUNNING to see the best diagnostic suggestions for a pump that can't reach cut-off pressure.
I can't say if the issue here is a piping leak, low voltage, or a control issue.
On 2016-09-15 19:52:18.635978 by Crystal
We have a deep well, just replaced the pump, had a hard time getting it up to pressure. Got it to 50, checked for water, ran for a few seconds then no pressure at all, just a light stream of water from the faucet. Any ideas?
On 2016-09-06 18:54:45.402370 by (mod)
If the pump is having trouble reaching the cut-off pressure I suspect
- low voltage
- piping leaks
- damaged pump
- low well water flow rate
Search InspectApedia.com for PUMP WON'T STOP RUNNING to read diagnostic and repair suggestions.
On 2016-09-04 13:07:44.116775 by joe2100.jh
I am having to prime my well pump manually. It's not that big of an issue, I know how to do it but its annoying. The real issue is that once primed and pressure raised to 60psi(it struggles to do so), water will come out of my garden hose once turned on, but not getting any water to the house. I am needing to know if it's an issue with the pump or the well itself.
On 2016-07-28 00:22:59.335770 by Nanette
I have a private well and little water in house pressure is under 20
On 2016-06-12 21:29:55.196923 by (mod)
Sounds like a water-logged or non-functioning pressure tank
On 2016-06-12 00:20:09.542177 by Well water pump
Pressure comes on normal pressure but with in five seconds cuts pressure by half the amount
On 2016-05-30 21:00:07.179230 by (mod)
Lalit the motor may be running but the pump impeller could be shot, or you need to search InspectApedia for HOW TO PRIME THE PUMP to get it going. Don't let a well pump run dry or it may be damaged.
On 2016-05-28 16:14:22.970667 by lalit
Jet pump running fine but not succing water from 85 feet well
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Thanks to our reader, Carole Cimitile, 2/17/2009, for reminding us that small problems like faucet o-rings, clogged faucet strainers and similar local plumbing fixture defects can have a big impact on hot water flow, cold water flow, or both hot and cold water flow and pressure problems.
Thanks to reader EK Woodard, Boise State University, Boise ID, for assistance in diagnosing poor water pressure following an electrical power loss.
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Water Fact Sheet #3, Using Low-Yielding Wells [ copy on file as /water/Low_Yield_Wells_Penn_State.pdf ] - , Penn State College of Agricultural Sciences, Cooperative Extension, School of Forest Resources, web search 07/24/2010, original source: http://pubs.cas.psu.edu/FreePubs/pdfs/XH0002.pdf
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