WATER QUALITY

The EPA maintains data on the attainment of water quality for the nation's watersheds - the area drained by water bodies such as rivers, streams, lakes, estuaries and coastal waters.

The % Good column in the table below is the percentage of the city's watershed that "Fully Supports" its designated use as public water supply, agricultural, recreational, industrial or other use.

Aspen ranks highest in this criteria because 99% of its watershed fully supports its designated use.

WATER QUALITY
2002 - 2006
		%	%	%	GPTR
City/Town	Watershed(s)	Good	Threatened	Impaired	Rank
Aspen, CO	Roaring Fork	99%	0%	1%	1
Vail, CO	Eagle	97%	0%	3%	2
San Marcos, TX	San Marcos	94%	0%	6%	3
Georgetown, TX	San Gabriel	94%	0%	6%	3
Gatlinburg, TN	Lower French Broad	91%	0%	9%	5
Hot Springs Village, AR	Upper Saline and Fourche La Fave	86%	2%	12%	6
Bigfork, MT	South Fork Flathead and Swan	63%	25%	12%	6
Tyler, TX	Upper Neches	87%	0%	13%	8
Iowa City, IA	Lower Iowa	5%	77%	18%	9
Hilton Head, SC	Broad-St. Helena	79%	0%	21%	10
The Woodlands, TX	Spring and West Fork San Jacinto	78%	0%	22%	11
Clarksville, TN	Lower Cumberland	78%	0%	22%	11
Provo, UT	Provo	76%	0%	24%	13
Colorado Springs, CO	Fountain	75%	0%	25%	14
Boulder, CO	St. Vrain	75%	0%	25%	14
GPTR Rank - Lower "% Impaired" is better

% Good = Percent of the watershed that Fully Supports all of its designated uses
% Threatened = Percent of the watershed that currently Fully Supports all of its designates uses
but may become impaired in the future if pollution control actions are not taken
% Impaired = Percent of the watershed that cannot Fully Support one or more of its designated
uses

WATER QUALITY

Related City Links: