POLLUTION LOCATOR| Water | State Clean Water Act Status Report

Clean Water Act Status: COLORADO
 
 
  • 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 COLORADO or in the U.S. by assessed use impairments.
    Rank watersheds in COLORADO 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
    COLORADO contains a portion of 88 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 3%
    Number of Waterbodies with Reported Problems (as reported by the state): 79
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Overall Use 99%
    Beneficial uses not reported for 100% of waterbodies.


    Priority for Regulation     Number of Waterbodies
    Targeted 6
    High 19
    Medium 30
    Low 23
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 1
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 70
    Percent of Rivers, Streams and Creeks in COLORADO assessed by agencies for 1997-98 reporting period: 27%
      Percent Waterbodies Affected
    Metals 83%
    pH 13%
    Sediments 11%
    Impaired Biological Community 7%
    Ammonia 6%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 9
    Percent of Lakes, Reservoirs and Ponds in COLORADO assessed by agencies for 1997-98 reporting period: 36%
      Percent Waterbodies Affected
    Mercury 78%
    Pesticides 33%
    Pathogens 11%
    Ammonia 11%
    Metals 11%
    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: 70 (cause not reported for 100%)
    Percent of Rivers, Streams and Creeks in COLORADO assessed by agencies for 1997-98 reporting period: 27%
      Percent Waterbodies Affected
    Impairment source not reported 100%

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 9 (cause not reported for 100%)
    Percent of Lakes, Reservoirs and Ponds in COLORADO assessed by agencies for 1997-98 reporting period: 36%
      Percent Waterbodies Affected
    Impairment source not reported 100%

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




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