Phosphates

Phosphate is one of the most important elements for growth of the plants and animals in the lake ecosystem. The presence of phosphate is often scarce in the well-oxygenated lakes, and low levels of phosphates limit the production of fresh water.

Levels:
0.005-0.05 ppm: typical of undistributed forest streams
<0.05ppm: suitable for human consumption
0.05-0.1ppm: may increase aquatic plant growth
>0.1ppm: likely to cause algal blossom
1.0ppm: approximately ideal upper limit for wastewater treatment plant effluent. 

THE HEALTHIEST RIVER BASED ON PHOSPHATE RESULTS IS: OHIO RIVER


Chicago River

0.74+/- 0.43 (0.10-1.50) ppm


Clear Creek(Chamber Creek)

(Clear Creek)
Mean: 3.75 mg/L
Standard: 2.39 mg/L
Range: 0-8

(Chamber Creek)
Mean: 5.4 mg/L
Standard: 6.6 mg/L
Range: 0-28


Ohio River

There is a low amount of phosphorous in the river. A traceable amount; however, it doesn’t effect the river and the aquatic life.