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  • PFAS in Select U. S. Tapwater Locations | U. S. Geological Survey - USGS. gov
    This USGS map shows the number of PFAS detected in tap water samples from select sites across the nation The findings are based on a USGS study of samples taken between 2016 and 2021 from private and public supplies at 716 locations The map does not represent the only locations in the U S with PFAS
  • Tap water study detects PFAS ‘forever chemicals’ across the US
    At least 45% of the nation’s tap water is estimated to have one or more types of the chemicals known as per- and polyfluorinated alkyl substances, or PFAS, according to a new study by the U S Geological Survey There are more than 12,000 types of PFAS, not all of which can be detected with current tests; the USGS study tested for the presence of 32 types
  • PFAS in US Tapwater Interactive Dashboard - USGS. gov
    Drinking-water quality and potential exposures to per- and poly-fluoroalkyl substances (PFAS) at the point-of-use (tapwater) are a rising concern in the United States (US)
  • Hardness of Water | U. S. Geological Survey - USGS. gov
    In scientific terms, water hardness is generally the amount of dissolved calcium and magnesium in water But in layman's terms, you may notice water hardness when your hands still feel slimy after washing with soap and water, or when your drinking glasses at home become less than crystal clear Learn a lot more about water hardness on the Water Science School site
  • PFAS in US Tapwater Interactive Dashboard - USGS
    Click on the layers in the map to display detailed information Information on PFAS facilities will appear as a pop-up in the map, detailed PFAS data for selected sites will populate the text box on the right
  • Earthquakes | U. S. Geological Survey
    Latest Earthquakes Latest earthquakes map and list Tap click on "gear icon" for options and settings Earthquake Lists, Maps and Statistics Largest earthquakes, significant events, lists and maps by magnitude, by year, or by location Special Earthquakes, Earthquake Sequences, and Fault Zones Compilations of information about significant earthquakes, swarms or sequences, and fault zones of
  • USGS Water Data for the Nation
    The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using automated sensors and manual data collection Each monitoring location has location information that details the location name and identifier, the agency responsible for data collection, and geographic information about the location Most monitoring locations have data
  • Did You Feel It? - USGS Earthquake Hazards Program
    Did You Feel It? (DYFI) collects information from people who felt an earthquake and creates maps that show what people experienced and the extent of damage
  • Water Science School | U. S. Geological Survey - USGS. gov
    Welcome to the U S Geological Survey's (USGS) Water Science School We offer information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge
  • Do you have information about water hardness in the United States?
    See the USGS map of water hardness (as calcium carbonate) in surface water of the United States Under the Safe Drinking Water Act, primarily administered by the U S Environmental Protection Agency (EPA), your drinking water supplier is required to send you information about the quality of your drinking water every year These annual drinking water quality reports (also known as consumer





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