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The Safe Drinking Water Act requires the US EPA to set standards for drinking water quality in public water systems (entities that provide water for human consumption to at least 25 people for at least 60 days a year). [3] Enforcement of the standards is mostly carried out by state health agencies. [4]
The Safe Drinking Water Act is the principal federal law governing public water systems. [1] These systems provide drinking water through pipes or other constructed conveyances to at least 15 service connections, or serve an average of at least 25 people for at least 60 days a year. As of 2017 there are over 151,000 public water systems. [2]
An above ground water tank on the White Mountain Apache Tribe in Arizona, the EPA worked collaboratively with the goal of improving access to safe drinking water on tribal lands. The SDWA can promote environmental justice by increasing the safety of drinking water in the communities most adversely impacted by water contamination. [110]
About 40% of drinking water in America comes from groundwater sources. [15] When contaminants enter aquifers, the pollution spreads, eliminating the potential to use the aquifer for drinking water. Groundwater contamination is often the result of chemicals that seep through the soil and into the water supply, such as pesticides and fertilizers ...
Over half of the U.S. population relies on groundwater for drinking water [1] However, residential, municipal, commercial, industrial, and agricultural activities can all contaminate groundwater. [2]: C-2 In the event of contamination, a community's drinking water supply can develop poor quality or be lost altogether. Groundwater contamination ...
The EPA on Tuesday, March 14, 2023, proposed limiting the amount of harmful “forever chemicals” in drinking water to the lowest level that tests can detect. (Travis Long/The News & Observer ...
According to the EPA in a 2007 survey, 10% of California's groundwater has a Nitrogen level greater than 5 mg/L. This equates to around 7% of the population that is drinking contaminated groundwater. Five mg/L is half of the EPA limit of allowed nitrogen in water. [4]
As of 2019 EPA has issued 88 standards (78 MCLs and 10 Treatment Techniques) for microorganisms, chemicals and radionuclides. [5] For some contaminants, EPA establishes a Treatment Technique (TT) instead of an MCL. TTs are enforceable procedures that drinking water systems must follow in treating their water for a contaminant. [4]