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So, basic back story, well pump was done in 2012, approx 7 years old. House is 1992 built, 3 bathrooms, 4 kids, 2 adults. The kids shower almost every night back to back, which recently became an issue as water pressure drops to the point of nothing. This goes on for months, and if you let the system sit turned on overnight, water pressure is back to normal in the morning. Well is 280’ deep, static depth is marked as 10’ deep on the well tank. Well pressure tank as far as I can tell is original to the house, I have not changed it since I moved in, 2006. Well Xtrol 20 gallon pressure tank. I had checked the air pressure when the problem first arose this summer, and found it to be ~15psi. I readjusted it to 28. I had a plumber come check the system to determine the fault. They said the well pump was failing and drawing 4 amps which they said is abnormal. They replaced the pressure switch because I had installed one with a shutoff. After receiving a ridiculous quote for $2400 to replace the pump, I decided to replace the pump myself with the same unit. 3/4hp, Goulds. Same exact unit that we had before. Pain in the ass dragging 280’ of line and the pump up by hand, but somehow got it done. Replaced the pump and motor assembly, torque arrestor, spacers, and lots of electrical tape. Everything I got from the supply house was awesome and well priced. Since replacing the pump, anytime we call on a significant amount of water, ie; 4 kids showering back to back, the water will randomly lose pressure and die completely. I will leave everything on overnight and in the morning, approx 8 hours later, the water is back to normal. 50-60 psi. The thing I have noticed is the amount of sediment. We have two water filters for sediment, one is larger than the other. The first larger one is getting very dirty very quickly. It used to take a good 3-6 months to get really dirty so that water pressure dropped, but now it seems to only take a couple weeks. I’m at wits end and really just want this water issue fixed! Looking for advice on what to do next. Thank you!

  • I forgot to mention one aspect of the system that confuses me. I was checking the pump control box last night after the water had stopped working. Found out that although it was hanging on the wall, it wasn’t wired to be working. The wires come from the pressure switch and go through the control box right to the well head. The contacts in the box are not being used. Since it’s a 2 wire pump, I believe that is ok, a pump controller is not needed. But if the well pump is rated for 230 volts, is running it on 120 volts working properly? – Roadnuts Aug 13 at 1:52
  • This is really hard to read and I'm having difficulty finding the question. Perhaps you could edit? – Chris Cudmore Aug 13 at 13:29
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    I would be surprised that a 230v pump would pump at all with 120v. I have found when you over draw a well or pull it down hard more sediment gets in so that makes sense to me. I would want to verify the pump voltage because I would not expect it to run at 120v but there are 120v 3/4 horse pumps and if you hit a 120v pump with 240v it would let the magic smoke out. To solve your issue you may need to get a large holding tank this is how many homes deal with low flow problems. – Ed Beal Aug 13 at 14:38
  • Chris Cudmore, I tried to give my backstory so all the info is there and I don’t have to answer multiple questions about what I have or what has been changed. Long story short, my water pressure drops after my 4 kids take showers back to back. Let the system sit overnight and water pressure is back to normal. – Roadnuts Aug 13 at 17:07
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Several things:

  1. Re-train the kids to a 3 minute shower: (Australia uses shower timers and so do showers in swimming pools etc) A shower should be get wet, water off soap on, then rinse off... Not a 20 minute marathon...

  2. Why give the motor 120V when it is designed for 240V? Have you checked the voltage being delivered?

  3. The lowering of the water level may have put the intake in a "dirtier" position, so you should check.

If, back in 2012, there were only 2 of you, then the water use has increased from say 400 litres to 1200 litres per day, assuming 200 litres per person.

If you think of a shower at 15 litres a minute, then a 3 minute shower is 45 litres but a 20 minute shower is 300 litres then multiplied by 4 kids 1200 litres just for showers without the rest of the use.

  • That’s my question, is it ok to run the pump on 120 volts, which is what I measured with a dmm. Even though it’s rated at 230 volts. And we have been limiting showers to 5 min a piece, but sometimes after 2-3 showers, the water has quit. – Roadnuts Aug 13 at 11:09

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