Hi all. What is a safe FC level to swim in a pool? My CYA is 70 because my pool service was using Trichlor tabs. I cancelled their service and switched to liquid chlorine. Today my FC level was 10 which is what the FC/CYA chart recommends. Is that level unsafe to go swimming in? I have a pool party coming up in 6 days so if it’s too high I guess I’ll just hold off on chlorine until then. Obviously I will still check my chlorine levels everyday to keep track… weather looks like it’ll be full sun this week so I’m pretty sure the FC should drop fairly quick. I use a Taylor K-2006 test kit.
Safe Chlorine levels for swimming
- Thread starter Kmaese909
- Start date
DrewLG
Gold Supporter
- May 31, 2022
- 671
- Pool Size
- 8000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-20
Anything up to 28 ppm (the SLAM level for a CYA of 70) is safe for your equipment and for people.
- May 3, 2014
- 62,616
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
You can safely swim in a pool as long as the FC is above the minimum and at or below SLAM level based on your CYA. You must also be able to see the bottom of the pool in the deep end of the pool.
At a CYA of 70, the SLAM level FC is 28 ppm. Minimum FC is 4 ppm. So any FC between 4 and 28 ppm is safe to swim in.
At a CYA of 70, the SLAM level FC is 28 ppm. Minimum FC is 4 ppm. So any FC between 4 and 28 ppm is safe to swim in.