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

MISSOURI contains a portion of 64 watersheds.

Percentage of Surface Waters with Reported Problems (state + EPA data): 4%

Number of Waterbodies with Reported Problems (as reported by the state): 174

Rivers, Streams, and Creeks
Number of impaired waterbodies: 153 (cause not reported for 2%)
Percent of Rivers, Streams and Creeks in MISSOURI assessed by agencies for 1997-98 reporting period: 42%

	Percent Waterbodies Affected
Sediments	33%
Low Dissolved Oxygen/Organic Enrichment	16%
Other	14%
Nutrients	10%
Metals	10%
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NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.

Rivers, Streams, and Creeks
Number of impaired waterbodies: 153 (cause not reported for 1%)
Percent of Rivers, Streams and Creeks in MISSOURI assessed by agencies for 1997-98 reporting period: 42%

	Percent Waterbodies Affected
Agriculture	36%
Municipal Point Sources	24%
Resource Extraction	22%
Urban Runoff/Storm Sewers	5%
Natural Sources	4%
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NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.