Why are valves placed on water distribution systems? How are valves used when a water main breaks? Define the two main types of water system valves and give examples of each one.
Your response should be at least 75 words in length. You must use at least one scholarly source other than and including your text book to complete this assignment. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations. All references and citations used must be in APA style