There is some indication of increasing trends in phosphorus levels, but no trends are evident for nitrogen. Elevated fecal coliform bacteria levels do not support contact recreation use, particularly in the upper portions of the segment. Contact recreation use is not supported because of elevated fecal coliform bacteria levels. A concern for dissolved oxygen exists. The dissolved oxygen and nitrogen levels in this segment have improved due to improvements in wastewater treatment.
Some evidence shows measured concentrations of nitrogen are increasing.
This may be attributed to the nitrification process now employed by wastewater treatment facilities. Stream flow is dominated by domestic wastewater effluent. Water quality historically has been poor, but improvement in wastewater treatment levels has resulted in measurable improvements in water quality. Low levels of dissolved oxygen are no longer a concern in this segment. Contact recreation use is not supported because of elevated levels of fecal coliform bacteria.