POLLUTION LOCATOR| Water | National Clean Water Act Status Report

Clean Water Act Status: Entire United States
 
 
  • Clean Water Act Comparative Ranking
    Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources
    Rank counties or watersheds by assessed use impairments
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  • 1998 Clean Water Act Status
    Percentage of Surface Waters with Reported Problems (state + EPA data): 11%
    Number of Waterbodies with Reported Problems (as reported by the state): 21749
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Not Reported 61%
    Aquatic Life Support 29%
    Primary Contact Recreation (Swimming) 10%
    Fish Consumption 10%
    Overall Use 7%
    SecondaryContact Recreation (Boating) 3%
    Drinking Water Supply 3%
    Shellfish Consumption 2%
    Wildlife Support 2%
    Agriculture 2%
    Aesthetics / Scenic 1%
    Industrial 0%
    Cultural 0%


    Priority for Regulation     Number of Waterbodies
    Targeted 1450
    High 3260
    Medium 3770
    Low 5017
    Not Assessed for TMDL Priority 3118
    Not Reported to US EPA for TMDL Priority 3473
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 16617 (cause not reported for 1%)
    Percent of Rivers, Streams and Creeks assessed by state agencies for 1997-98 reporting period: 23%
      Percent Waterbodies Affected
    Sediments 27%
    Pathogens 26%
    Nutrients 18%
    Low Dissolved Oxygen/Organic Enrichment 17%
    Metals 16%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 3725 (cause not reported for 1%)
    Percent of Lakes, Reservoirs and Ponds assessed by state agencies for 1997-98 reporting period: 42%
      Percent Waterbodies Affected
    Nutrients 40%
    Sediments 22%
    Noxious Aquatic Plants 21%
    Low Dissolved Oxygen/Organic Enrichment 20%
    pH 16%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 1178 (cause not reported for 1%)
    Percent of Estuaries and Bays assessed by state agencies for 1997-98 reporting period: 32%
    Percent of Coastal Shorelines assessed by state agencies for 1997-98 reporting period: 5%
      Percent Waterbodies Affected
    Pathogens 66%
    Low Dissolved Oxygen/Organic Enrichment 16%
    Nutrients 14%
    Metals 10%
    Pesticides 8%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Fresh Water Wetlands
    Number of impaired waterbodies: 78 (cause not reported for 1%)
      Percent Waterbodies Affected
    Pathogens 40%
    Nutrients 18%
    Sediments 17%
    Low Dissolved Oxygen/Organic Enrichment 16%
    pH 14%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.
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  • Leading Sources of Water Quality Problems
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 16617 (source not reported for 51%)
    Percent of Rivers, Streams and Creeks assessed by state agencies for 1997-98 reporting period: 23%
      Percent Waterbodies Affected
    Agriculture 15%
    Atmospheric Deposition 1%
    Construction 2%
    Contaminated Sediments 0%
    Combined Sewer Overflows 1%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 3725 (source not reported for 51%)
    Percent of Lakes, Reservoirs and Ponds assessed by state agencies for 1997-98 reporting period: 42%
      Percent Waterbodies Affected
    Agriculture 13%
    Atmospheric Deposition 18%
    Construction 3%
    Contaminated Sediments 1%
    Combined Sewer Overflows 0%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 1178 (source not reported for 54%)
    Percent of Estuaries and Bays assessed by state agencies for 1997-98 reporting period: 32%
    Percent of Coastal Shorelines assessed by state agencies for 1997-98 reporting period: 5%
      Percent Waterbodies Affected
    Agriculture 3%
    Atmospheric Deposition 1%
    Construction 0%
    Contaminated Sediments 1%
    Combined Sewer Overflows 4%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Fresh Water Wetlands
    Number of impaired waterbodies: 78 (source not reported for 76%)
      Percent Waterbodies Affected
    Agriculture 9%
    Construction 3%
    Contaminated Sediments 1%
    Natural Sources 12%
    Nonpoint Sources 8%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.
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  • Links
    Scorecard's report on
    U.S. EPAs Office of Water
    U.S. Geological Survey Water Resources of the United States
    U.S. EPA National Water Quality Inventory: 1998 Report to Congress
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