1/14/2024 0 Comments Liquid chlorine near meA "weekly shock" you are calling for is not going to kill crypto because our CYA is way too high in a residential outdoor pool. But as per the CDC this is definitely a spot treatment. The only one you mentioned that is affected by superchlorination (they call hyperchlorination) is crypto. Shigellosis occurs more in the summer than in the winter. 5-2ppm FC) can remove Shigellae with the use of chlorine, so the bacteria are more prevalent in raw, untreated water. Water treatment plants (which I believe maintain. Every reference is in water that was completely unchlorinated so I thin this is an easy one: Sounds like normal levels of chlorine kill this without a problem. coli 0157:H7, in less than a minute if its concentration and pH are maintained as CDC recommends.Ĭenter for Disease Control and Prevention (CDC) states that 99.9% of noroviruses are inactivated at a chlorine concentration of 1 mg/L (=1 ppm) with exposure of 4.2 s Here's the reference:įree chlorine kills most bacteria, such as E. Unfortunately it may be too late to keep others from getting sick at that point. Weekly shocking isn't going solve this problem since the chlorine will sanitize it after an hour. According to the CDC the only solution is prevention, don't poop in the water, duh. Regarding Giardia: According to the CDC Giardia can live in properly chlorinated water for up an an hour and makes bathers sick if they drink the water after an infected person poops in the water. Sounds, at least from this, that standard shock levels isn't even effective in killing this bug either and it's more a commercial pool concern. I will also hit up the chemists, there are a few, in the TFP forum and get their opinion too. I will absolutely look for that information and get back to you. coli will NOT raise your CC's when combined with chlorine. So you are implying I should be able to find documentation indicating that fecal coliform, cryptosporidium, e. Your post is the first I've heard of CCL so correct me if I'm wrong. And as far as I can tell that is not Combined Chlorine (CC). As far as I can tell that's Contaminant Candidate List (CCL). I don't have any knowledge of commercial maintenance but neither do I think you should be applying commercial pool maintenance to a residential pool. I assume they aren't all like that just the ones many of my friends in the neighborhood use.Ĭommercial pool and residential pool maintenance are completely different, which I'm sure you must know.
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