POLLUTION LOCATOR| Water | State Clean Water Act Status Report
Clean Water Act Status: NEW HAMPSHIRE
 
 
  • Clean Water Act Comparative Ranking
    Cleanest/Best States National Average Dirtiest/Worst States
    0%         50%         100%

    Percentage of Surface Waters with Impaired or Threatened Uses (state + EPA data):
    Number of Impaired Waterbodies (as reported by the state):

    NOTE: Data limitations affect the accuracy of these rankings.

    Rank counties in NEW HAMPSHIRE or in the U.S. by assessed use impairments.
    Rank watersheds in NEW HAMPSHIRE by assessed use impairments
    Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources

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  • 1998 Clean Water Act Status
    NEW HAMPSHIRE contains a portion of 11 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 17%
    Number of Waterbodies with Reported Problems (as reported by the state): 226
    Beneficial uses not reported for 100% of waterbodies.

    Priority for Regulation     Number of Waterbodies
    Targeted 0
    High 36
    Medium 38
    Low 70
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 82
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 162
    Percent of Rivers, Streams and Creeks in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 24%
      Percent Waterbodies Affected
    Pathogens 39%
    Metals 36%
    Low Dissolved Oxygen/Organic Enrichment 12%
    Other 11%
    Impaired Biological Community 2%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 54
    Percent of Lakes, Reservoirs and Ponds in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 95%
      Percent Waterbodies Affected
    pH 43%
    Nutrients 30%
    Metals 24%
    Pathogens 4%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 10
    Percent of Estuaries and Bays in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 100%
    Percent of Coastal Shorelines in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Pathogens 90%
    Organic Compounds 50%
    PCBs 50%

    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: 162
    Percent of Rivers, Streams and Creeks in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 24%
      Percent Waterbodies Affected
    Unknown Sources 63%
    Combined Sewer Overflows 10%
    Agriculture 6%
    Hydromodification/Habitat Modification 5%
    Urban Runoff/Storm Sewers 4%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 54
    Percent of Lakes, Reservoirs and Ponds in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 95%
      Percent Waterbodies Affected
    Atmospheric Deposition 63%
    Unknown Sources 28%
    Agriculture 6%
    Combined Sewer Overflows 2%
    Urban Runoff/Storm Sewers 2%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 10
    Percent of Estuaries and Bays in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 100%
    Percent of Coastal Shorelines in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Unknown Sources 100%

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


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