| |
|
Regulations
Ideally, polluting contaminants should be prevented from entering the water. At the most, in some circumstances, they can be allowed only in low concentrations. All provinces and territories in Canada have pollution control regulations. In deciding which substances to control, and to determine their concentrations and how they may enter the environment, a number of questions have to be asked, including:
- what are the sources, amounts and effects of various substances?
- what happens to them and what do they do after they have entered the water? do they change? to what?
- where do the substances end up?
- can they be prevented from reaching the water body or removed by treatment?
An example of a substance successfully regulated to reduce pollution is the phosphate found in laundry detergents. The new Canadian Environmental Protection Act (CEPA)  will regulate many more substances that have a deleterious effect on the environment.
|
Water Pollution Menu
Previous
