Although fecal coliform bacteria levels have decreased since 1994, it is still considered a possible concern. There are 31 wastewater permits in this segment. The flow is also influenced by three major watersheds in Oklahoma and by discharge from Lake Texoma. Screening of available data indicates concerns for nutrients, dissolved metals, and dissolved minerals. Chlorides and sulfates are both naturally occurring from salt springs and seeps in the upper reaches of the basin.
Nutrients are only marginally greater than the screening criteria.
The metals concentrations are isolated instances with no apparent trends. Only lead and cadmium are above the primary drinking water standards. The segment consists of Pond Creek and Lake Crook. No wastewater permits are in this segment. The data screening process indicates a concern for nutrients, which may be due to natural biological processes within the water body.