Standard

AWWA M21

Published

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Abstract

Chapter 1 is an overview of the occurrence and behavior of groundwater, including the geology, hydrologic cycle, and aquifer characteristics that define groundwater flow. A brief discussion is included on the process to evaluate aquifers and water quality. Chapter 2 outlines the type and construction of wells that can be used for water supplies for utilities and describes the types of pumps used in well applications; maintenance requirements; pump problems; and solutions to those problems. Chapter 3 discusses the recordkeeping used with wells and wellfield systems. These records provide utility personnel with insight into the occurrence of problems and long-term trends. This chapter has seen the most revision since previous editions. Chapter 4 outlines the problems likely to be encountered as well as plugging and fouling problems and their correction. Microbiological fouling is a major topic discussed in detail in this chapter as it is a major issue throughout the world— albeit one that is not commonly understood. Chapter 5 summarizes water treatment issues arising from groundwater sources. The discussion is not exhaustive, but it describes common treatment options that operators, engineers, and administrators of water supply agencies should be aware of, may use, or may need to consider. It expands on the information of the previous versions of M21. Chapter 6 summarizes the manual and where more information is available if more details are needed. This manual should help operators and engineers gain enough background on the subject of groundwater to improve their decision-making. The manual should help these professionals answer many of their questions about complex aquifer systems and improve their response to problems. The Groundwater Resource Committee is hopeful that the new edition will meet the industry’s needs and will be as useful as the previous editions have been.

Document information

  • Standard from AWWA_AC
  • Published:
  • Version: 0
  • Document type: IS
  • Additional information
    • Fifth Edition