What we did

We filled a large test tube with water from the jar  till it reached 10 ml , then added  one pH tablet and shaked the tube until the tablet was no longer visible  and then we compared the colour we got from the tube to the pH colour chart. The suitable ranges for aquatic animals to survive is between 6.5- 8.0. Air pollutants such as fumes from car exhaust and smoke from factories get's trapped into the water vapour and falls back as acidic rain and affect the levels of pH in the streams. The results we got from testing the stream was 7 pH which indicates that the streams water was neutral and had it been less than 7  it would be acidic if it was greater it would be alkaline .Those two factors would make it hard for aquatic  animals and plants to survive .