Valves direct, start, stop, mix, or regulate the flow, pressure, or temperature of a fluid. Many types of valves exist. This Tech Brief examines the most common types of valves, problems that may be...
This phenomenon is the momentary increase in pressure that occurs in a water system when there is a sudden change of direction or velocity of the water. These pressure fluctuations can be severe...
When contaminants are detected in water resources, it is important to describe what the occurrence of these contaminants may mean to human health. The U.S. Geological Survey (USGS) began an...
Data for 436 unregulated compounds analyzed by the USGS's National Water-Quality Assessment (NAWQA) Program are in the Health-Based Screening Level (HBSL) database.
To decontaminate and return a water system to service following a non-conventional chemical, biological, or radiological contamination incident requires effective pre-planning, communication, and...
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