>>Also...I’d expect that somebody would be testing the water daily, during an event like this.
Daily!? Half a dozen times a day, minimum.
Pool chemistry is simply not rocket science. Head lifeguards across the fruited plain manage it daily in summertime. Taylor Technologies would have been glad to send an expert at very nominal cost to advise the Rio Organizing Committee, I’m sure.
We had been primed to expect the polluted waters of the bay but who expected they couldn’t even manage a lousy clean swimming pool?