Boiling water for 20 minutes is effective in destroying pathogens because no heat-resisting bacteria are disease producers.

The statement posits that boiling water for 20 minutes effectively destroys pathogens, which is true. The boiling point of water (100 degrees Celsius or 212 degrees Fahrenheit) is sufficient to kill most bacteria, viruses, and parasites, making it a reliable method for sterilization.

While it is accurate that most disease-producing pathogens are sensitive to heat, the assertion that "no heat-resisting bacteria are disease producers" may oversimplify the matter. Some bacteria can form heat-resistant spores that might survive boiling; however, in practical terms, many of these spores are not commonly associated with disease in healthy individuals.

Boiling for the specified duration ensures that standard pathogens are eradicated, maintaining the safety of the water for consumption. This makes the boiling method widely recommended for treating water in emergency situations or where the water supply is contaminated. Thus, under ordinary circumstances, the statement holds true regarding the general effectiveness of boiling water for pathogen destruction.