Consider the following statements regarding characteristics of water:

1. The color testing of water must be done within 48 hrs of collection of sample otherwise chemical activities will alter the color.

2. As per EPA, the permissible limit for suspended solids is 30 mg/l for drinking water.

3. Temperature affects the chemical and biological activities, if it increases by 10º, biological activity just remains the same.

Which of the above statements are incorrect?