Water Quality


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Human Drinking Water

There are two types of water systems that provide drinking water for human consumption in the United States; public or private water systems.

Public water systems are regulated and monitored by the State of North Dakota and must comply with water quality parameters listed in the Safe Drinking Water Act and administered by the US Environmental Protection Agency (EPA). Approximately 286 million Americans obtain their tap water from a public water supply.

Private water systems that are not subject to regulation. Monitoring and maintaining drinking water quality are the responsibility of the homeowner. An estimated 15% of Americans, or about 45 million people, obtain their drinking water from private water sources usually ground water wells. 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.

Some resources to help maintain private drinking water quality:


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