POLLUTION LOCATOR| Water | State Clean Water Act Status Report

Clean Water Act Status: MAINE
 
 
  • 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 MAINE or in the U.S. by assessed use impairments.
    Rank watersheds in MAINE 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
    MAINE contains a portion of 21 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 9%
    Number of Waterbodies with Reported Problems (as reported by the state): 226
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Overall Use 50%
    Beneficial uses not reported for 100% of waterbodies.


    Priority for Regulation     Number of Waterbodies
    Targeted 11
    High 2
    Medium 23
    Low 108
    Not Assessed for TMDL Priority 51
    Not Reported to US EPA for TMDL Priority 31
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 139 (cause not reported for 2%)
    Percent of Rivers, Streams and Creeks in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Low Dissolved Oxygen/Organic Enrichment 35%
    Pathogens 28%
    Impaired Biological Community 17%
    PCBs 12%
    Other Habitat Alterations 9%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 53
    Percent of Lakes, Reservoirs and Ponds in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Nutrients 68%
    Other Habitat Alterations 21%
    Low Dissolved Oxygen/Organic Enrichment 8%
    Other 6%
    Toxics 2%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 34
    Percent of Estuaries and Bays in MAINE assessed by agencies for 1997-98 reporting period: 100%
    Percent of Coastal Shorelines in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Pathogens 82%
    Low Dissolved Oxygen/Organic Enrichment 15%
    Other 12%
    Toxics 9%
    Metals 3%

    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: 139 (cause not reported for 48%)
    Percent of Rivers, Streams and Creeks in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Impairment source not reported 48%
    Nonpoint Sources 48%
    Municipal Point Sources 9%
    Combined Sewer Overflows 1%

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 53 (cause not reported for 98%)
    Percent of Lakes, Reservoirs and Ponds in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Impairment source not reported 98%
    Municipal Point Sources 2%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 34 (cause not reported for 79%)
    Percent of Estuaries and Bays in MAINE assessed by agencies for 1997-98 reporting period: 100%
    Percent of Coastal Shorelines in MAINE assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Impairment source not reported 79%
    Municipal Point Sources 15%
    Nonpoint Sources 15%

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


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