It does not take Rocket Science

As the summer closes i again am amazed at the number of swimming pools that could not get things correct.
I mean to keep you pH at somewhere around 7.4 and free chlorine between 0.8 and 3 is really not that hard, but most "operators "  just do not care.
The number of complaints of pools ( not city run, but at condos or clubs) is amazing, but what really gets me is the number who fail not once or twice, but three nd four times after they have been told what to do.
Green pools with no chlorine, pools with so much chlorine it would peel the cloth right off a swimmer, spas too hot...this gets me fairly insenced and still it goes on...