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WATER PUMPS, TANKS, TESTS, WELLS, REPAIRS

AIR DISCHARGE at FAUCETS, FIXTURES
AIR INLET VALVE, WATER TANK
AIR VOLUME CONTROLS, WATER TANK

CHEMICAL CONTAMINANTS in WATER
CHECK VALVES, WATER SUPPLY
CHLORINE IN DRINKING WATER
CISTERNS

DEBRIS in WATER SUPPLY, Water Heater
DRINKING WATER - EMERGENCY PURIFICATION
DRINKING WATER - EMERGENCY SOURCES

EPA GUIDE to WATER QUALITY

FHA WATER TESTS REQUIRED
FILTERS, WATER
CHECK VALVES, HEATING SYSTEM
FOOT VALVES, WELL PIPING

GALVANIC SCALE & METAL CORROSION
GREYWATER SYSTEMS

HARD WATER - SOFTENERS
HEAT TAPE USAGE GUIDE

LEAD POISONING HAZARDS GUIDE

METHANE GAS SOURCES
MUNICIPAL WATER PRESSURE IMPROVEMENTS

PIPING IN BUILDINGS, Clogs Leaks Types
PLASTIC CONTAINERS, TANKS, TYPES
PLUMBING SYSTEM ODORS

RADON HAZARD TESTS & MITIGATION
RELIEF VALVES - Water Tanks
REVERSE OSMOSIS CONCENTRATE DISPOSAL

VALVES, PLUMBING

WATER CONTAMINANT LEVELS
WATER FILTERS
WATER HAMMER NOISE DIAGNOSE & CURE
WATER HEATERS

WATER ODORS, CAUSE CURE

WATER PRESSURE & FLOW MEASUREMENT
WATER PRESSURE GAUGES
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER PRESSURE REPAIR GUIDE - WELLS

WATER PUMPS, TANKS, TESTS, WELLS, REPAIRS
WATER PUMP CAPACITIES TYPES RATES GPM
WATER PUMP CONTROLS & SWITCHES
WATER PUMP PRESSURE CONTROL SWITCH
WATER PUMP TYPES & LIFE EXPECTANCY
WATER PUMP PRIMING PROCEDURE
WATER PUMP PROBLEM DIAGNOSTIC TABLE
WATER PUMP REPAIR GUIDE
WATER PUMP SAFETY
WATER PUMP SHORT CYCLING
WATER PUMP WONT STOP RUNNING
WATER PURIFIERS

WATER QUALITY TESTS, CONTAMINANTS, TREATMENT
WATER QUANTITY AVAILABLE FROM A WELL
WATER QUANTITY TEST: WELL FLOW TEST
WATER QUANTITY IMPROVEMENT

WATER SHUTOFF VALVE LOCATION, USE
WATER SHUTOFF VALVE, WELL PUMP
WATER SOFTENERS & CONDITIONERS
WATER SOURCE ALTERNATIVES
WATER SUPPLY & DRAIN PIPING
WATER SOFTENERS & CONDITIONERS
WATER SOURCE ALTERNATIVES

WATER TANK: USES, TROUBLESHOOTING
WATER TANK AIR, HOW TO ADD
WATER TANK AIR INLET VALVE
WATER TANK AIR LOSS SIGNS
WATER TANK AIR VALVE REPAIRS
WATER TANK AIR VOLUME CONTROLS
WATER TANK BLADDERS & CAPTIVE AIR
WATER TANK CAPTIVE AIR vs TRADITIONAL WellMate
WATER TANK CONTROLS & SWITCHES
WATER TANK LIFE EXPECTANCY
WATER TANK PRESSURE GAUGE
WATER TANK PRESSURE RELIEF VALVE
WATER TANK REPAIRS
WATER TANK REPLACEMENT
WATER TANK SAFETY
WATER TANK TYPES

WATER TESTS, CONTAMINANTS, TREATMENT
WATER TEST CHOICES & WATER TEST FEES
WATER TEST FEES
WATER TESTING GUIDE
WATER TEST INTERPRETATION
WATER TREATMENT EQUIPMENT CHOICES

WELL PUMP PRIMING PROCEDURE
WELLS CISTERNS & SPRINGS
WINTERIZE A BUILDING

More Information

Photograph of a 1-line jet pump (shallow well) and water softener

Water Pump Won't Stop Running Diagnosis, & Repair
InspectAPedia®  -      

  • How to diagnose a water pump that won't shut off - the well pump keeps on running
  • Causes and cures of continuous water pump operation
  • Water Pump malfunction diagnosis guide
  • How to avoid damaging a water pump
  • Questions & answers about diagnosing and fixing a well pump that won't stop running

This article explains how to diagnose & repair a water pump that keeps on running and won't shut off. We include a Table of Diagnostic Steps for a Well Pump that Won't Shut Off.

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Why Won't My Well Pump Shut Off?

Following our description of reasons that a well pump won't stop running (just below) we provide a Table of Diagnostic Steps for a Well Pump that Won't Shut Off

This article series answers just about any question you may have about pumps, wells, and drinking water. Even before performing water quantity, quality, equipment function tests, there is an enormous amount we can determine about a building's water supply just by looking at the equipment.

The photograph at page top shows a one-line jet pump, the water pressure tank, and a water softener. We know from the fact that this is a single line jet well pump that the well is a shallow one, probably less than 27' deep. Well depth may have implications for water quantity and quality and vulnerability to surface water contamination.

Watch out: the first thing to do to protect your pump from damage if it simply wont' turn off is to shut off electrical power to the pump. If the building has no water pressure, turn off the water pump immediately. Running a water pump "dry" risks causing internal damage to the pump. If there is no water pressure, see WATER PRESSURE LOSS DIAGNOSIS & REPAIR.

If your well pump is turning on and off too often, see WATER TANK REPAIRS and further details at SHORT CYCLING CAUSES - why does the water pump keep shutting on and off so quickly? If your pump won't start, see WATER PRESSURE LOSS DIAGNOSIS & REPAIR and PUMP PRESSURE CONTROL REPAIR. At WATER PUMP WONT STOP RUNNING we discuss water pumps that won't shut off.

If your building has some water pressure (check at a nearby faucet) but the well pump keeps on running and won't shut off, that's what we are discussing here. Several problems can cause a water pump to keep running instead of shutting off when it should, and each of these suggests its own diagnostic step to finding out what's happening with your well pump.

  • Water may be running somewhere in the building. Check for a running faucet or fixture indoors, including checking for running toilets. Remember to check outside garden hoses and watering systems. If all fixtures are turned off, make sure that you don't have a burst pipe somewhere. Remember to check heating boilers and water heaters for leaks too.
  • The well pump may have lost prime. See WELL PUMP PRIMING PROCEDURE for two methods that almost always work to get a dry well pump going again. Make sure that you have adequately primed the pump and do not let a well pump run dry - you are likely to damage it.
  • The pump pressure control switch may be set to a higher pressure than the pump can achieve - this is more likely if someone has been fooling around with the switch. See Water Pressure Adjustment how to adjust the water pressure in a building.
  • The well water level may have dropped and the pump is unable to pick up and deliver water in sufficient volume - this is possible if the well piping has a low-water tailpiece installed to protect a submersible pump from burnup. In this design if water level in the well drops too low the tailpiece causes water to re circulate through the pump rather than being sent up the piping to the building served by the well. See these articles: Well Flow Rate, Well Yield, Well Water Quantity: How Much Water is In the Well? Well Flow Rate, Yield Improvement Methods How to Get More Water From a Well without drilling a new well, and see Well Life Expectancy of Wells how long should a water well and its components last?
  • The pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures. See Life Expectancy of Water Pumps - Well Pumps: how long should a water pump last? What affects pump life?
  • The well piping may have a leak. This includes "hidden" leaks such as a leak in the piping inside the well or between the well and the building. If such a leak is present you may observe that water pressure in the system drops when the pump is turned off even though no water is running in the building.
  • A leaky foot valve in the well or a hidden running water source in the building such as a running toilet can also cause this symptom. See Repeated Loss of Pump Prime for a discussion of well piping foot valves and the relation to loss of well pump prime.
  • A failing well piping low water cutoff control or well tailpiece intended to protect the well pump from damage by a low-flow or poor recovery rate well may have failed or may be needed. See WELL PIPING TAIL PIECE for details.
  • The well pump output rate may have exceeded the well's safe flow rate, or a well drawdown cutoff device or tailpiece in the well may have failed (or may be needed and missing). See WATER PUMP TYPES & LIFE EXPECTANCY where we describe these conditions and parts.

Table of Diagnostic Steps for a Well Pump that Won't Shut Off

At WATER PUMP WONT STOP RUNNING is our full article discussing the causes for water pumps that won't shut off. Here we provide a Table of Diagnostic Steps for a Well Pump that Won't Shut Off.

Watch out: the first thing to do to protect your pump from damage if it simply wont' turn off is to shut off electrical power to the pump. If the building has no water pressure, turn off the water pump immediately. Running a water pump "dry" risks causing internal damage to the pump. If there is no water pressure, see WATER PRESSURE LOSS DIAGNOSIS & REPAIR. Some of the well pump troubleshooting suggestions in this list can be found at the Betta-Flo Jet Pump Installation Manual from the National Pump Co.

What to Check if the Well Pump Will Not Stop Running
Pump Won't Stop Cause Diagnostic Procedure Repair Procedure

Water running in the building

If water is running somewhere in the building water supply system (don't forget outside garden hoses and lawn sprinklers) at a rate faster than the pump can deliver from the well, the pump will run continuously.

Turn off the main water supply to the building, typically found at the water pressure tank. If the pump continues to run the problem is not likely to be a running fixture or pipe leak downstream (in the building) from this point.

If you have turned off water at the water pressure tank and the well pump is still running, before blaming the pump, controls, piping, well, lookonce more for water supply piping that may be ahead of the valve where you turned off water.

Turn off or repair running toilets, outdoor garden hose hook-ups or lawn sprinklers, or supply piping that is leaking.

If this was the problem source the well pump will continue to run until pressure builds up to the pressure control switch cut-out level and the pump should stop.

If the pump runs on, check the remaining diagnostic steps below.

Lost prime at the well pump

If the above-ground (jet pump) pump has lost prime the pump may be running "dry" continuously.

Watch out: turn off the pump immediately to avoid damage.

If no water is being delivered and the pump is running and it's an above ground pump, turn off power and inspect the pump cavity for the presence of water by removing the priming plug.

If the pump is a submersible unit in the well, loss of prime is not normally an issue.

A bad check valve or failed foot valve can lead to loss of well prime.

Re-prime the pump - see WATER PUMP PRIMING PROCEDURE

If the problem is recurrent see
  WELL PIPING CHECK VALVES
  WELL PIPING FOOT VALVES
  WELL PIPING LEAK DIAGNOSIS
  WELL PIPING TAIL PIECE

Water pressure control switch setting errors

Improper switch adjustment can cause too-rapid pump cycling

 

If you or someone else has tried "adjusting" the cut-in or cut-out settings of the pressure control switch, it may be set improperly.

 

Check / change pressure switch pressure settings to correct adjustment for cut-in and cut-out. Normally we see about 20 psi between cut-in and cut-out pressures.

Lower the pump cut-out pressure setting. If the pump stops, this was the problem.

See:    
PUMP PRESSURE CONTROL ADJUSTMENT

Water pressure switch tubing clogged

Clogged pressure sensor or switch pressure sensing tubing can cause improper switch performance.

See WATER PUMP PRESSURE CONTROL

If the switch is not responding consistently to changes in building water pressure the pressure-sensing component of the switch or the tubing connecting it maybe defective.

Try removing the tubing and blowing air through it.

Check pressure switch tubing for leaks or clogging. Clean or replace the tubing.

The clog could also be debris in the orifice on the bottom of the pressure switch sensor, or inside the sensor requiring that the switch be replaced.

See:    

PUMP PRESSURE CONTROL ADJUSTMENT
PUMP PRESSURE CONTROL REPAIR
PUMP PRESSURE CONTROL REPLACE

Water pressure switch contact points burned/welded

 

Arcing may have burned the pressure control switch contacts. In some cases the contacts may become "welded" together in the closed (power on) position.

Turn off electrical power (for safety) and examine the contact points. If they are stuck together and burned this may be the problem.

You will need to replace the switch.

See PUMP PRESSURE CONTROL REPLACE

Well piping leak

A bad leak anywhere in the well piping between the building water pressure tank and the bottom of the well can leak enough water when the pump is running that the pump cannot raise pressure in the pressure tank up to the cut-out level and the well pump will continue running.

Close the main building water supply valve between the pressure tank and the rest of the building.

Turn off the well pump electrical power.

Watch the water pressure gauge. If pressure continues to drop there may be a leak in well piping. If the gauge does not move, tap it to be sure the gauge is not itself stuck.

Also air coming out of building plumbing fixtures can be caused by air leaks into the same well piping when the pump is not running.

Leaks in well piping will usually require pulling the piping in the well and if no leak is observed there, it may be necessary to excavate along the path of the well line between well and building. Start excavation by looking for wet spots on the ground that could be caused by a well piping leak.

See WELL PIPING LEAK DIAGNOSIS

Loss of water in the well

If the well water level has fallen too low or the well recovery rate is too poor, or if the well pump is oversized for the well flow rate, the pump may run continuously.

Other symptoms of this problem include air discharge at plumbing fixtures.

Install a properly-sized well pump matched to the well flow rate.

Install a tailpiece and/or low water cutoff device to protect the pump from damage.

Investigate and fix the cause of a poor flow rate or low-yield well.

See
WELL FLOW RATE
Define Safe Yield for a Well.
WELL LIFE EXPECTANCY
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER QUANTITY IMPROVEMENT

WELL PIPING TAIL PIECE

Plugged ejector assembly, tailpiece,or foot valve or well screen in the well

Debris clogging the screen at the water pickup in the well can reduce the water flow rate.

To diagnose and correct this problem it is necessary to pull the well piping and inspect the ejector, tailpiece, foot valve or well screen for clogging

Clean or replace the clogged parts.

See
  WELL PIPING CHECK VALVES
  WELL PIPING FOOT VALVES
  WELL PIPING LEAK DIAGNOSIS
  WELL PIPING TAIL PIECE

Well pump capacity is inadequate

A well pump that cannot pump water pressure up to the pressure control-switch cut-off point.

If you are confident that none of the explanations above diagnose a well pump that runs on, check that the pressure gauge is itself accurate - that's how we make sure that the pressure control switch is not set above pump capacity.

Having eliminated all of the explanations above, we suspect the pump may have become internally damaged and it will need repair or replacement.

 

Turn off electrical power to the well system, remove system water pressure (save water for pump re-priming if necessary).

Remove and inspect the well pump and pump motor for proper operation. Check the pump impeller assembly for mechanical damage, broken internal parts, or mineral deposits or debris clogging that reduce water flow through the pump.

Replace the impeller assembly and other pump parts as needed or replace the entire pump assembly.

See
WATER PUMP CAPACITIES TYPES RATES GPM
WELL PUMP TYPES & LIFE EXPECTANCY
WELL PUMP PRIMING GUIDE

Frequently Asked Questions (FAQs) about well pumps that won't stop running

Question: Water pressure drops and well pump never stops

Well starts out ok but within minutes has dropped pressure never does stop pumping water but it sure does get low whats up? - Ken

Reply: what to check when the pump never reaches cutoff pressure

If your pump runs continuously and never reaches cut-off pressure, there are several possible causes (see the table of problems above) such as

- pressure switch cut-out set higher than pump is capable of reaching (for example worn pump or broken impeller)

- low water in the well

- leak in well piping

- running so much water at once in the building that the pump can't catch up

Question: Water pressure surges and pump keeps running

My well is continuing to pump but with surges. Pressure at pump and at pressure valve at house both read 24 to 32 LBS bouncing back and forth. Whole weel system is new and was installed 4th of July weekend. It worked fine all day and then went to take shower and it was next to nothing coming out of faucet. - George

Reply: water surging may mean the pump is short cycling due to a waterlogged pressure tank

George, surging water pressure on a private well and tank system is often due to a water-logged water pressure tank - causing well pump short cycling. See WATER PUMP SHORT CYCLING - article link at page left.

Question: Water-to-air cooling system shut down due to lack of water

Last nite house "water-to-air" cooling system shut down -- safety switch shuts it down when water is not available. Well pump had stopped running.

Replaced well pump pressure switch and pressure guage. Well pump then reached 48 psi and ran continuously at that pressure even though ALL house fixtures and cooling system were shut off !!

The well pump would not reach the 60 psi cut-off point that was preset in the new pressure switch. I then tightened down of the large spring in the pressure switch. With all house water requirements turned off and turning the large spring tighter, the pump would not come above 48 psi and ran continuously. So then I loosened up on the large spring.

Now the pump turns off at about 46 psi. The pump is above ground, single-pipe, jet pump, about 25 years old. Also checked all pipes -- no leaks. This situation really mystifies me. I will appreciate any and all ideas, thiughts, suggestions. I would like to see it cut on around 30-35 and cut off around 50-55 approx. Thanks, Stan

This situation really mystifies me. I will appreciate any and all thoughts, ideas, suggestions - Stan L. Liteborn, liteborn@comcase.net

Reply:

Stan, the part of your well pump problem description that reads

"Replaced well pump pressure switch and pressure guage. Well pump then reached 48 psi and ran continuously at that pressure even though ALL house fixtures and cooling system were shut off !!"

Suggests to me that either your well flow rate is inadequate - the water available from the well is insufficient - or there could be a leak in the well piping between the well and the house. Other problerms can look like an inadequate well flow rate, such as a leak in well piping.

Reader follow-up:

Here's present situation: Well pump worked last nite (7/21) and most of today. Late this afternoon, cooling system shut down again. Well pump motor was running, pump itself was too hot to touch and no water was available (opened tank drain faucet and only air came out). I shut off power to well pump, closed main water valve between tank and house and connected up to neighbors well. This has better pressure than I've ever had but not enough volume to run the cooling system (too long a run with hoses from neighbor to me). I will leave it this way till morning and then inspect along pipe route from house to my well, to see if any water is coming out of ground. Higher pressure from neighbors system may thus reveal your suggested .."leak in the well piping between the well and the house". If thats not it, looks like I have either a well or a pump problem --- or both!! How to check well itself for broken/rusted out/cracked pipe? How to check for bad foot valve in well? How to check for well sufficiency / water availability in well. How to check if pump is working, if it will pump water or is broken / worn out? Or is it the best approach to replace 1 item at a time till the problem is solved?? Where to start? Again, I really appreciate your interest and concern to assist with suggestions thus far. Hoping to hear from you with some thoughts about present situation and questions. Thank you so much, Stan

Reply: a hot to touch well pump sounds like the pump is running dry - things to check:

Stan, pump too hot to touch sure sounds like a pump running dry - and maybe a well without water. If you shut off all water into the house and water pressure still drops then that's why I suggested there may be a leaky check valve foot valve or piping. But your description makes us think it's a well problem.

In general it's reasonable to try replacing the less costly, easy to access questionable components first; Also if you end up needing to pull the well line for inspection/repairs, I would always install a new foot valve at that time.

Question: Good water pressure but high electric bills - we think it's the water pump but can't find any leaks

We are having a similar issue with our well.....we have good water pressure at the house and saw an increase in the electric bill.....cant seem to find any leaks....our well is 375 ft deep, and the pump is only 5 years old......any suggestions? - Regina

Reply: check for piping leaks; check the pump current draw ampacity using a clamp-on ammeter

Regina: turn off water into the home and see what happens - if your pump runs anyway then you have a leak between the in-building equipment and the bottom of the piping in the well.

Also, your plumber or well driller can measure the amps current draw of the pump to see if it's damaged or drawing unusual current.

Question: My Goulds jet pump pressure hangs at 39 psi - never reaches the 40 psi cutoff

I have a goulds jet pump that pumps up to 39ibs a stays there . the pump is set to shut off at 40lbs so it stays running .It dose not lose it prime .the water inside the crock well is 2 feed over foot valve .no leaks outside. can you help me ? - Ron

If I have a leak between the jet pump an the bottom of pipe in side the well. Will I lose the prime?

Reply:

Ron I agree it does not sound like a leak. Try making a small adjustment to the pressure switch cut out pressure to drop it to 38 psi. IF the problem recurs I suspect a clogged sticking pressure control switch sensor.

Question: We lost water pressure and see water leaking into the well pit where the tank is located

We have loss water pressure, & discovered water leaking into pit were we have the bladder for well, what needs to be done? - Barbara

Reply:

Barbara, start by having a clear idea of where the leak is coming from. Indeed a leak in well piping or at the water tank could result in lower water pressure.

Question: My pump keeps running but the pressure gauge at the water tank sa

I do have some water flow. Pump is a submersiable about 300 ft deep. The contacts are pulled in - I am pulling 7 amps. My bladder tank is about 400 ft. from the pump. The line coming directly from the well is cold. The pressure gauge at the bladder tank is on 0 psi Where do I begin to troubleshoot? - Gary

Reply:

Gary if the pressure tank is at 0 psi either the tank is not working (intake port blocked by a collapsed tank bladder?) or the well flow rate has deteriorated, or there is a problem with the pump or well piping. Start at the pressure tank.

Question: My pump won't shut off - the pressure builds to 36 psi and hangs there. If I turn the pump off the pressure drops to 30. Pump does not lose prime.

I have a bladder tank and jet pump. The pump will not shut off, the pressure will build up to 36 psi and just stay there, that's with the line going to the house shut off. If I turn the pump off, after a while the pressure will drop to 30 psi, but the pump never loses its prime. Any ideas to fix? - JJ

Reply:

JJ I've added some diagnostics to the table above, please take a look.

Diagnose by turning off water into the building, turn off the pump, and watch the water pressure. If pressure falls there is probably a bad check valve, foot valve, or leak in the well piping.

If pressure seems to "stick" at 30 psi try tapping the pressure gauge to see if it's sticking too.

Question:

the cold water inside home is heating up why - NJ Payne

Reply:

NJ Payne,
your question is not quite clear, but if you mean what would cause an increase in cold water supply temp in a home, it could be seasonal changes, pipe routing of cold piping through hot areas or adjacent to hot water piping, or an actual mix of hot water into the piping system via a mixing valve or an improper connection.

Cold water supply that flows initially out of indoor piping will be warmer as well from having absorbed heat from the building.

Question:

We have a Flotec jet pump for our shallow well. After recently running dry (water level must have dropped below the foot valve), the pump continued to run and overheat. This required replacement of several sections of the PVC piping, as it had deformed due to the high temperature. We also installed a new pressure switch (30/50) that has a safety cut-off feature. The pressure tank is set correctly (checked several times, and it is still holding steady at 28 psi). We have primed the pump several times, but it is not operating correctly. The pump kicks on at the correct pressure, but will not turn off. It gets to about 40psi, and stays there.

Is there still some air in the pump, or has the pump been damaged to where it can no longer generate enough pressure? Or maybe there is another issue?

Thanks for any input. - Alan

Reply:

Alan, it's possible that running your pump at length, dry, damaged the impeller assembly. If that's the case, even though the motor may run, the impeller may simply not be moving water with as much force as previously. You'll need to disassemble the pump, inspect, and replace the impeller parts if that's the problem. Keep us posted, what you learn will help other readers.

Reader Follow-up:

Disassembly of the pump as recommended revealed no obvious signs of damage.
But, since the pump has run dry a few times in the past, I think we will go ahead and order a rebuild kit and replace the internal components anyway.

As a temporary measure, we were able to get the system back up and running by reducing the pressure switch setting by about 3 psi. The pump now turns off at about 40 psi. Hopefully the pump will continue to be able to function at this level until we can get it rebuilt.

Reply:

Alan, if a well pump is worn or if for another reason the pump is having trouble reaching the cut-off pressure, setting the pressure down to a point that the pump can reach is quite reasonable. But watch out: if the problem recurs you'll need to find and fix the actual problem: with the pump, piping leak, low well water, etc.

Question: My deep well pump won't pump up to 50 psi. Even turning down the cut-out pressure doesn't help.

I have a deepwell pump that wont pump up to 50psi. I have had to turn down the cut-off pressure twice so that the pump would shut off. Does that mean that my pump is going out? - Rodney

Reply:

Rodney, any of the problems listed in our checklist table above could explain why your pump won't reach full pressure. Typically it's low water supply in the well; sometimes a well piping leak; or see the details listed above.

Question: Shallow well pump won't stop running - after flushing a toilet

I have a shallow well pump that won't stop running after starting when the tank is drawn down by a toilet flush. The pump will start to build pressure but then just stops building and continues to run. If I cycle power to the pump, even if it is just off then on quickly the pump begins to build pressure and will shut off. This only happens when the pump begins to run after a tank draw down from a toilet flush. If any other fixture running causes the tank draw down and the pump to start it builds pressure and shuts off. I am at a loss on where to start.

Reply:

Ted,

When the pump never shuts off ONLY after a toilet flush one has to suspect that the toilet keeps running - its tank fill valve may be stuck; Otherwise I'd think the pump and well would eventulally be able to reach cutout pressure once the toilet stopped calling for water.

But a well pump and tank ought to be able to keep up with the water demand from just a toilet tank fill-up alone, so there may be another problme. I''m just guessing but it sounds as if your pump is having trouble reaching the cutoff pressure or has for some reason reduced capacity. When you turn on say a sink faucet the pump probably comes on and runs all the time that you are running water in the sink, but successfully runs up to cutoff pressure and stops when you close the sink faucet.

But when you flush the toilet, the toilet fill cycle may continue for a while (as if you'd left a faucet open), so the pump may be continuing to run because while the toilet is drawing water the pump isn't reaching the cutoff pressure. By the time you walk down to the pump and turn power off and back on the toilet may have finished filling.

If that's the case it would be very odd, because the inflow rate into the toilet tank is so slow that I'd expect the pump to be capable of getting "ahead" of the flow rate and thus reach cutoff pressure. That's why I speculated that the pump capacity or well flow rate may be more limited than you thought.

Check the draw-down cycle on your water pressure tank too. You should have at least 30 seconds of draw down from a full-pressure state before the pump has to come on.

Question: A few times a month we lose water pressure and it won't return until I shut off power to give the pump a rest

We have a 5 year old well. A few times or more a month we lose water pressure and it won't come back unless I shut the breaker off and give the pump a break. Sometimes the water comes back in an hour and sometimes it takes over night. We have a submerisable pump with a check valve on it in front of it and right before the tank. Before we put the one on at the tank it would drain down. Or at least sound like it. It is 120' well with the pump at 100' and water starts at 30'in the well casing. If I water the plants for 15 minutes or wash 4-5 loads of clothes with a water saver washer and take a bath all in one day (not one right after the other) it is done. I am a x-city person and not sure if I am expecting to much. Our neighbors have great water and no problems with draining their well. Any ideas? - Janice H.

Reply: you are describing a well with a poor recovery rate

Janice you are describing a well with a poor recovery rate or flow rate. Check with your local well driller to ask about hydro-fracking or other steps that might increase the yield of your well.

Question: the plumber dropped our pump into the well, then retrieved it - now we have bad water pressure

Hey, I had to replace submersible pump the company ended up dropping the pump and seven of pipe . Took the several days to get out of 300 ft. hole. Now it supposedly fixed but terrible water pressure. The first had a pump but said was not enough hp so got another one for 200 dollars more. Could they damaged the pump and still used it or went back to the smaller hp to cover damaged pump. I have turned off several fixtures pressure got somewhat better. I am at a loss thanks - James

Reply:

James, I'm sorry to read about your well pump drop and aggravation. Certainly a pump could be damaged by dropping. I SPECULATE that the damage risk depends on some variables such as the distance the assembly fell through air before impacting water. With no facts, we can't second-guess what the pump installed did afterwards.

At this point it makes sense to get an accurate diagnosis of exactly why your water pressure is poor, and to see where that leads. There are plenty of things to check including the delivery rate of the pump and well, the amps being drawn by the pump, correct pump wiring (making a wiring mistake can leave a pump running but at low power), piping leaks, and more.

Try starting at WATER PRESSURE LOSS DIAGNOSIS & REPAIR (article link at page left) and keep us posted - what you find will help other readers.

 

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