In NJ, bacteria tests are performed weekly.  if you have a coliform problem, the DOH makes you close the pool and shock it.

Explain to me how a pool that reads 1.5 ppm chlorine, RELIGIOUSLY, and 7.4 pH can have a coliform count, when the CDC says that at 1ppm, the coliform will die in the time the sample gets to the lab?

I believe that the pool is fine, and its the Lab Techs that are screwing up, by contaminating their samples... "All employees must wash their hands before returning to work"...I think this is the crux of the issue in NJ.

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Taking a stab in the dark but...

Is this pool's skimming system working properly? Organics tend to float and body oils definitely float. If the skimming system is not working well (or at all) then its quite possible to have an organic soup near the surface despite good sanitizer levels in the rest of the pool. An oil slick at the surface will act as a barrier to sanitizer so pathogens in and on the oil slick are unharmed.

We had a problem with one 1970s era pool where surface skimming just wasn't sufficient. The system was OK back in the 70s when we had 1/3 the patronage but the 50% of design flow had to be ramped up to 80% before the problem went away. This was despite good sanitation control and low plate counts from the health department.

pool has a gutter, with auto fill.


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