Use well water after the well has been sanitized?

[PoolBoyNC]

There are probably too many unknowns here, but I'll ask just in case someone has come across this before.

The water supply to my house is via a well and yesterday I had the well pump replaced. Afterwards, calcium hypochlorite was added to the well to sanitize it. I was given instructions to flush the well after 24 hours to remove the chlorine from the water supply. I normally use my well water to top off the pool as needed to replace evaporation, so my question is: Can I use the "flush water" to top off my pool? The volume of this water is unknown at this time as I was told to keep flushing it until no chlorine smell remains, or as in the written instructions: until the chlorine level is 0.04mg/L or lower. I imagine there will be hundreds of gallons of water used to flush the well.

I was told to flush the well by opening an outside spigot for 15-30 minutes every hour until the chlorine has been removed. However, this water shouldn't be put onto the lawn or near any plants as the chlorine may harm/kill them. Where I'm supposed to put this water is a mystery as my entire property is covered with grass, trees and other plants. I was also told not to flush the water into the septic system because it will kill the bacteria which process the waste.

Putting the water to good use in the pool would seem to solve the problem unless it might create a new one by damaging the pool or fouling the water.

Some of my thoughts:
1. I don't know the chlorine concentration of the water, but can measure it and monitor the pool chlorine level as the well is flushed into it.
2. What might be in the water? Perhaps adding calcium hypochlorite to the well will cause the introduction of something into the water as it reacts with underground rocks/minerals.
3. Replacing the well pump certainly stirred up sediment in the well which will also be flushed out and possibly harm to the pool. The water going to the outside hose spigots isn't filtered, only inside water is filtered. I would think the majority of the sediment would come out towards the beginning of the flush and I wouldn't add this to the pool. Again, where to put it is still a problem.

The answer most likely is not to add the water to the pool, but perhaps someone has some prior experience or knowledge on this matter.

Thanks

 

[CarolineM]

I would not use that water. The chlorine was put in to more or less SLAM your well. It is killing bacteria and other gunk that’s in there. Because of that it will have high CC’s, you do not want that in your pool.

I have been through a well sanitizing and the water you flush can be nasty.

 

[PoolBoyNC]

Thanks CarolineM for your input. I'll spare the pool the addition of nasty water and look around the property for a place to dispose of it.

 

[manfacro]

I water my lawn with pool water when I have to drain it when the level gets too high. Have yet to see a negative.

That being said, it’s unknown what the chemical levels of the well water are... could be lots more chlorine than a pool.

 

[Teald024]

I’d run the water into a bathtub, barrel, large trash can to get a high enough volume. Then use your test kit to see how high the chlorine level is. Then make an educated decision from there.
They suggested the outdoor spigot so that you aren’t running the high chlorine water through the house supply.

 

[PoolBoyNC]

I started flushing the well late this afternoon and the water is full of sediment and not worthy of putting into the pool. Even after pumping several hundred gallons it's still somewhat dark with a strong chlorine smell. Perhaps after a few hundred gallons more I'll test it for FC. As the chlorine drops and the water clears I'll probably direct it into the pool. It has been hot and rainless for weeks now, so the pool really needs to be topped up.