POLLUTION LOCATOR| Water | State Clean Water Act Status Report
Clean Water Act Status: ARIZONA
 
 
  • 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 ARIZONA or in the U.S. by assessed use impairments.
    Rank watersheds in ARIZONA 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
    ARIZONA contains a portion of 82 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 1%
    Number of Waterbodies with Reported Problems (as reported by the state): 103
    Beneficial uses not reported for 100% of waterbodies.

    Priority for Regulation     Number of Waterbodies
    Targeted 14
    High 19
    Medium 22
    Low 45
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 3
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 87
      Percent Waterbodies Affected
    Sediments 62%
    Metals 26%
    pH 13%
    Pesticides 11%
    Pathogens 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: 16
    Percent of Lakes, Reservoirs and Ponds in ARIZONA assessed by agencies for 1997-98 reporting period: 22%
      Percent Waterbodies Affected
    Low Dissolved Oxygen/Organic Enrichment 50%
    pH 50%
    Sediments 31%
    Nutrients 19%
    Mercury 19%
    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: 87 (cause not reported for 100%)
      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: 16 (cause not reported for 100%)
    Percent of Lakes, Reservoirs and Ponds in ARIZONA assessed by agencies for 1997-98 reporting period: 22%
      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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