Hey all, I have an inground pool. I ran the filter all night trying to clear up water. This morning the water level is at least 2" higher. Any ideas?
Water level in inground pool rose at least 2" overnight. Any idea how?
- Thread starter Pete20745
- Start date
- Jul 21, 2013
- 52,274
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
No auto fill. We have gotten slammed with a lot of rain last weekend but no rain since. I'm thinking groundwater coming up through bottom drain? We had pool drained last year and had it painted. Painters had to set up a ladder across pool rigged to a pump because water kept coming up through bottom drain.
It was fine this morning. It did not rise at all. After doing yard work I noticed it filled again worse than yesterday! That happened within the last 1-2 hours. Thoughts?
Nope. Water did not rise overnight but just rose over 2" while I was doing yard work.
Do you have a picture of everything?
What is the ground water level relative to the water level in the pool?
What is the ground water level relative to the water level in the pool?
I have no idea. The ground in back of my pool drops in comparison to the pool level. I am surrounded by woods/trees and for the first time water is actually pooling in my woods area.
Attachments
Definitely odd.
Unless you have an unknown fill line, it seems to be a mystery.
It doesn't seem like ground water would be getting in the pool because the ground water would need to be higher than the pool water.
Periodically, check the water meter to see if it's running when it shouldn't be.
Unless you have an unknown fill line, it seems to be a mystery.
It doesn't seem like ground water would be getting in the pool because the ground water would need to be higher than the pool water.
Periodically, check the water meter to see if it's running when it shouldn't be.
PoolNewb2020
Well-known member
Your pool may have a hydrostatic relief valve in the main drain. In places where water table is high, it prevents pressure buildup on pool shell and instead lets ground water inside the pool.
Based on the terrain, ground water intrusion seems unlikely.
Maybe a picture of the system would be helpful.
Any chance that the pump is connected to a ground water well point?
Maybe a picture of the system would be helpful.
Any chance that the pump is connected to a ground water well point?
Here is a couple pics of system. Thank you all for your responses and enjoy your Memorial Day!
I b
I bet you are %100 correct. We just researched thathydrostatic relief valve and your answer sounds dead on correct. Thanks!
Attachments
For ground water to come in through the hydrostat, the ground water would need to be higher than the pool water.
I don't see how that would be possible with the terrain.
Maybe if the main drain had enough suction, it could pop the hydrostat and begin sucking in ground water.
Is the main drain cover open or closed?
Are you putting a lot of suction on the main drain?
Maybe the pump is connected to a well point so that the ground water can be controlled during a drain. That's the only plausible way that ground water would get in the pool.
Are you 100% sure that there's no fill valve?
Do you know what every pipe at the equipment pad goes to?
Why is the pump plumbed with galvanized steel? That's going to add a lot of iron to the water.
I don't see how that would be possible with the terrain.
Maybe if the main drain had enough suction, it could pop the hydrostat and begin sucking in ground water.
Is the main drain cover open or closed?
Are you putting a lot of suction on the main drain?
Maybe the pump is connected to a well point so that the ground water can be controlled during a drain. That's the only plausible way that ground water would get in the pool.
Are you 100% sure that there's no fill valve?
Do you know what every pipe at the equipment pad goes to?
Why is the pump plumbed with galvanized steel? That's going to add a lot of iron to the water.
Similar threads
