Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources
Rank counties or watersheds by assessed use impairments

Percentage of Surface Waters with Reported Problems (state + EPA data): 11%

Number of Waterbodies with Reported Problems (as reported by the state): 21749

Beneficial Use Most Frequently Impaired	Percent of All Impairments
Not Reported	61%
Aquatic Life Support	29%
Primary Contact Recreation (Swimming)	10%
Fish Consumption	10%
Overall Use	7%
SecondaryContact Recreation (Boating)	3%
Drinking Water Supply	3%
Shellfish Consumption	2%
Wildlife Support	2%
Agriculture	2%
Aesthetics / Scenic	1%
Industrial	0%
Cultural	0%

Priority for Regulation	Number of Waterbodies
Targeted	1450
High	3260
Medium	3770
Low	5017
Not Assessed for TMDL Priority	3118
Not Reported to US EPA for TMDL Priority	3473

Rivers, Streams, and Creeks
Number of impaired waterbodies: 16617 (cause not reported for 1%)
Percent of Rivers, Streams and Creeks assessed by state agencies for 1997-98 reporting period: 23%

	Percent Waterbodies Affected
Sediments	27%
Pathogens	26%
Nutrients	18%
Low Dissolved Oxygen/Organic Enrichment	17%
Metals	16%
More...

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

Rivers, Streams, and Creeks
Number of impaired waterbodies: 16617 (source not reported for 51%)
Percent of Rivers, Streams and Creeks assessed by state agencies for 1997-98 reporting period: 23%

	Percent Waterbodies Affected
Agriculture	15%
Atmospheric Deposition	1%
Construction	2%
Contaminated Sediments	0%
Combined Sewer Overflows	1%
More...

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

Scorecard's report on

• Watershed indicators
• Toxic chemical releases from industrial facilities (TRI)x
• Criteria air pollutants
• Hazardous air pollutants
• Land contamination

U.S. EPAs Office of Water

U.S. Geological Survey Water Resources of the United States

U.S. EPA National Water Quality Inventory: 1998 Report to Congress