I test the chlorine level in our saltwater pool often because its a new toy. Today I thought I would use the same kit to test the water we drink. ( this is Discovery Bay, Calif. well water} I have a charcoal and fabric filter and a water softener for the house water. I tested the kitchen tap and no yellow showed up in the test. So I assume the filter is doing its job of reducing the chlorine in my water. I next tested the water straight as supplied by the township. It tested yellow between 2-3 ppm and you could smell the chlorine when you turned on the outside tap. I next tested the pool and it was a lighter yellow maybe 1-2 ppm.
I was surprised to see that our township water had so much chlorine in it.
I also added a half gallon of liquid chlorine to the pool and put longer time on the filter mode which should rise the chlorine level for the pool. I will test the poolagain tomorrow to see how many more hours I need to add.