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Here's the data from my inspection report for the well:
Test location: Front exterior hose faucet.
Start: GPM reading- 7. Pressure reading- 48.
15 Minute: GPM reading- 4. Pressure reading- 55.
30 Minute: GPM reading- 4. Pressure reading- 40.
45 Minute: GPM reading- 4. Pressure reading- 58.
Well cycle pressure: Pump on at 38 PSI, pump off at 60 PSI.
I have no idea how to interpret it. Does this look good? This is a two full bath house, will two people be able to comfortable take shower simultaneously?
Here's the data from my inspection report for the well:
Test location: Front exterior hose faucet.
Start: GPM reading- 7. Pressure reading- 48.
15 Minute: GPM reading- 4. Pressure reading- 55.
30 Minute: GPM reading- 4. Pressure reading- 40.
45 Minute: GPM reading- 4. Pressure reading- 58.
Well cycle pressure: Pump on at 38 PSI, pump off at 60 PSI.
I have no idea how to interpret it. Does this look good? This is a two full bath house, will two people be able to comfortable take shower simultaneously?
Ask the inspector who did the test what this is telling you and what else he measured. Was this all you got? I've seen various well function reports but they varied in how they presented the information.
GPM is gallons per minute. That could be what the pump can pull per minute but it could also be how much water the well can provide per minute. Ask. You need to know how quickly water percolates back into the well from the surrounding soils (recharge or recovery rate) as the pump draws it out. Your pump could be great, but if the well can't fill fast enough to meet demand by the house, that will limit how much water can be used at a given time. Two showers will draw a lot.
IME, there will be a local minimum flow requirement for wells. This varies by location. Yours might be fine, it might be marginal. We don't know based on what you provided. I'm sure the tester would have notified you if it didn't meet requirements. Also realize these measurements were at a moment in time. The well's recharge rate could change seasonally. How much water it can produce in April could be different than what it an produce in August. If its marginal when flow through local soil is high, that could matter a lot during drier periods.
As someone who lives on a well, and your GPM doesn't seem like a high number... I would not count on two people showering at the same time. How often is that really necessary? I've never lived where I could do that. I wouldn't count on being able to flush the toilet without the shower pressure being affected. That's just life on a well.
As someone who lives on a well, and your GPM doesn't seem like a high number... I would not count on two people showering at the same time. How often is that really necessary? I've never lived where I could do that. I wouldn't count on being able to flush the toilet without the shower pressure being affected. That's just life on a well.
As someone with a very "slow" well, I have zero sympathy for those with decent flow who whinge about it not handling extraordinary draw. A small cistern or holding tank and second household pressure pump will resolve any intermittent issue.
With my cistern I regularly shower, wash dishes, and do laundry all at the same time.
i sent this data to the engineers in the pump division at the company i work for . i retired from the motor control division but i still do control and drives training there one day a week
they own a commercial and industrial pump manufacturing division .
they just reported back .
-----------------------------------------------
" sounds good but the proof is in the pudding .
if he is unhappy he could always ad a storge tank as the well looks like it has enough gpm"
Last edited by mathjak107; 04-28-2023 at 04:40 AM..
i sent this data to the engineers in the pump division at the company i work for . i retired from the motor control division but i still do control and drives training there one day a week
they own a commercial and industrial pump manufacturing division .
they just reported back .
-----------------------------------------------
" sounds good but the proof is in the pudding .
if he is unhappy he could always ad a storge tank as the well looks like it has enough gpm"
Not an expert but as someone else mentioned, the constant 4 GPM over a few readings could be the rating on the pump itself. If so, the well could be capable of more.
I help manage a community well and the pump is rated at 23 GPM and that is very close to what it puts out any time the pump is running.
A typical shower might be 25 gallons over 15 minutes. Your well pump would have put out 60 gallons in that time frame. Plus you likely have some storage somewhere.
Yep, looks like shower should consume around 2.5gpm, so two showers would be 5gpm. So I hope we should be fine.
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