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Minnesota Class D Water Exam | 100% Correct Answers | Verified | Latest 2024 Version

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According to the Safe Drinking Water Act the basic definition of a public water supply system is any water system that supplies water for human consumption that serves: - 15 service connection or over 25 persons for over 60 days a year What federal law regulates public water supplies? - Safe Drinking Water Act What cause water to move through pores in soil and rocks ? - Gravity What are disease producing bacteria called? - Pathogenic A presence/absence coliform test utilizes - color change What are two main causes of harness in water? - Calcium and magnesium Which source of water has the greatest natural protection from bacterial contamination? - deep well in gravel Which of the following terms refers to excessive internal pressure which may be several times the normal operating pressure and can seriously damage hydropnematic tanks, valves, and piping network. - water hammer What are the two most important safety concerns when entering a confined space? - hazardous gases and oxygen deficiency what piece of safety equipement must an operator wear when entering a confined space? - Harness Which document provides a profile of hazardous subst

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