Water line size and pressure and RO fill line

[haroldo]

Hello! We are about to bring utilities down to our new pool build equipment pad. For water line, is regular 3/4" at 70psi ok?
Our water calcium hardness is off the charts at 500ppm, so we will be initially filling the pool off our water softener, and will later install this fill line inline RO system:

https://www.purewaterindustries.com/wp-content/uploads/2023/06/PWF-SERIES-FILL-LINE-2023.pdf

Any thoughts on this?

thanks

 

[Rancho Cost-a-Lotta]

Before you get too deep into it, where in California do you live. Tap water with CH of 500 PPM is almost unheard of. How was the water tested?

 

[proavia]

City water or well?
Test your fill water for pH, TA and CH. Post the results here.
As Mike indicates, 500 ppm CH in fill water is very high.

Also, what capacity is your water softener?
The pool must get a continuous flow of water during the fill process. A water softener has a certain number of gallons of soft water before it needs to be regenerated - so you will run out of soft water before the pool is full.

A 3/4" line to the autofull will be sufficient. Be sure it is plumbed to your water softener so you will be replacing evaporated water with softened water to minimize CH increases to the pool water.

 

[Rancho Cost-a-Lotta]

https://www.purewaterindustries.com/wp-content/uploads/2023/06/PWF-SERIES-FILL-LINE-2023.pdf

Tell us more about this system. Is it available for purchase? Cost? Can't seem to find much info online.

A water softener should be able to keep your CH levels stable when used for evaporative top offs.

 

[pjt]

For water line, is regular 3/4" at 70psi ok?

How are you planning on controlling your fill line? Manual valve, automatic leveling device, sprinkler valve, etc.?

 

[haroldo]

Thanks for the input. The water softener is a fancy one, the Kinetico XP:

Kinetico Premier XP™

Non-electric water softeners powered by moving water and have multiple tanks for continuous soft water, even during regeneration.

www.kinetico.com

It costs about 7 grand, and it never stops providing soft water, as each channel (left and right) regenerate separetely, so when one is regening, the other one is still providing water.

I tested the water with test strips. I tested both the soft and hard water like 5 times each, and the tests results were consistent. The soft water had no hardness at all (at least not detected), the hard water was at the last color of 450+ ppm.

The water is municipal water.

I purchased a Taylor kit, will test the fill water shortly and post.

I spoke with Ken directly, one of the owners of that company. They build them to order, with 5-6 weeks lead time. Cost starts at 6K. This particular model is made for pool fill lines:

Inline RO Filtration Systems | Pure Water Industries

www.purewaterindustries.com

 

[TinFoilHat]

Test strips are inaccurate at best so those levels are vey doubtful.

 

[Rancho Cost-a-Lotta]

As mentioned, test strips are highly inaccurate. Get yourself a TFP recommended test kit and get an accurate reading on tap water CH. You'll likely find that your level is lower than you believe. You could probably fill your pool with unsoftened tap water and maintain that CH level by connecting your fill line for top offs to your softened source. You shouldn't need a high-dollar RO system unless you really need to separate some cash from your wallet.

Test Kits Compared

 

[Rancho Cost-a-Lotta]

I just noticed that you have a kit on order. Great job! Let us know what your fill water CH level is.