AOP or UV just for cryptosporidium?

Endro32

Well-known member
Jul 1, 2021
52
Rives Junction, MI
Pool Size
60000
Surface
Plaster
Chlorine
Liquid Chlorine
I know this one's a bit out there since the forum is primarily focused on residential pools, but still curious what the thought would be one this.

We still haven't taken out the ClearComfort AOP system that the pool builder installed when we first built a few years ago, and now I'm wondering if maybe it would make sense to keep it solely for the purpose of preventing crypto contamination. We have, on average, 60 kids in the pool for the four of seven days a week, and it's not really possible to simply keep kids who have recently had diarrhea out of the water. AOP is supposed to kill crypto, and since our pump turns the whole pool over four times every 24 hours (we're required to run it 24/7 since we're commercially regulated), I would think it'd be at least decently effective at keeping crypto at bay. Other option would be to switch out for a more basic UV filter.

This would be on top of standard TFP care and chlorine sanitation, of course. Not thinking of using it as a replacement sanitizer, just a supplement for this one specific reason.

We haven't had any issues with crypto in the past that I'm aware of, so maybe I'm being too cautious, and nothing in the Michigan health regulations require testing for or treating of crypto. But what do you guys think? Is it worth running one of those two systems for that purpose, or should I not worry about it? Is the UV from the Sun strong enough to keep it at bay anyway?
 
I would not worry about it because that is the job of the local water district to worry about. That is why they have regulations and not you. These protozoans are difficult to kill and are a major worry for potable water systems.
If i were you i would be more concerned about how to keep kids from running around the slippery deck or shooting you with at water cannon.
 
No, it's outdoors. It's the 60,000 gallon one in my signature. Only run for the months of June and July each year, basically.

Wow. 2 months of use …

UV isn’t going to do much for you as you’re already getting plenty. Sure a UV-C bulb is going to kill crypto but it’s a lot of investment and maintenance for minimal use. You said you’ve never had a case … ok, then you’re looking for a solution to a problem that doesn’t really exist for you.

Also, even in a single pass scenario, it would take at least 7 turnovers per day to keep the risk below 99% … your pumps aren’t that big.

Crypto is certainly a possibility from kids that have had diarrhea issues but your first approach is to have a solid terms of service policy. Constantly reiterate to patrons that if their kid has been sick within the last 24 hours then they can’t swim unless they have been fever and symptom free for 24hrs. Not everyone is honest but most parents I know are people that take stuff like this seriously.
 
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Wow. 2 months of use …
Yep, we're a summer camp. Can't start until kids are out of school, and have to end before our summer staff go back to college in August.

If i were you i would be more concerned about how to keep kids from running around the slippery deck or shooting you with at water cannon.
Haha in the past, I've gotten so used to telling kids "no running" that I'll see a kid run when I'm at the grocery store or something and almost blurt out "no running!" by accident.

This is helpful, thank you! At least puts my mind at ease about taking out the ClearComfort. Now the trouble will be having a ClearConscience™ about selling it to someone else :)
 
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