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Water is basic to life and health. Every living thing on this planet needs water in order to survive.

Whether you receive your drinking water from the tap, via commercially-bottled water, or through a personal filtration device, it is important to know where your water comes from, how it has been treated, and whether it is safe to drink!

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Quality & Testing,
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Water Fluoridation
Benefits,
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Private Water Systems
Wells (Basics, Testing, Treatment),
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Illness...

Drinking Water Fast Facts

Drinking Water Systems

Two types of Drinking Water Systems: Public and Individual

There are two types of drinking water systems in the United States. They are:

  • Public water systems that are subject to United States Environmental Protection Agency (EPA) regulations.
  • Individual water systems that are not subject to EPA regulations.

According to the EPA, approximately 286 million Americans receive their tap water from a community water system. These public water systems are monitored and regulated as set by the EPA.

An estimated 15% of Americans, or about 45 million people, get their water from private ground water wells that are not subject to EPA regulations. Private ground water wells can provide safe, clean water. However, well water can also become contaminated, leading to illness. It is the responsibility of well owners to maintain and treat their well (1,2,3).


1. U.S. Environmental Protection Agency. Factoids: drinking water and ground water statistics for 2007. March 2008, April 2008. Available at http://www.epa.gov/safewater/data/getdata.html.
2. U.S. Environmental Protection Agency. Private Drinking Water Wells. Available at http://www.epa.gov/safewater/privatewells/index2.html.
3. U.S. Census Bureau. National and State Population Estimates. Available at http://www.census.gov/popest/states/NST-ann-est.html.
4. Ten Great Public Health Achievements—United States, 1900–1999. MMWR, December 24, 1999;48(50):1141.


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    Atlanta, GA 30333
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  • healthywater@cdc.gov
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