Question

What is the hot water temperature (F) at the faucet at the restaurant? (90/95)
What is the pH level for a community swimming pool? (5/-5.8)
What is the free chlorine level for a community swimming pool? (0.5/1.0)
What year was the clean water Act Passed? (1948/1970)

Answer 1

1. Most of the restaurant maintain the faucet temperature at ~50-60 oC and it is approximately 120 to 140 F but in some places it can go up to 160 F and this is the suitable temperature for cleaning of dishes or utensils.

2. In majority of the community swimming pool, they keep a bit alkali pH as they add Sodium carbonate and bicarbonate salt to raise the pH little bit and maintain optimum pH which is between ~7.2 to 7.8.

3. Since chlorine is causing adverse effect to the health, so in most of the community swimming pool it is replaced but some other alternatives to act as disinfectant for water like sodium carbonate etc. Free chlorine should be maintained in the swimming pool with in the range of 1-3 ppm (1 mg in 1 liter is equal to 1 ppm) and it is considered as healthy condition of swimming pool.

4. A federal law on clean water was passed and implemented in the United States in 1948 to regulate and monitor water pollution in the country.