2. Categories of Water Pollution Non point source pollution - source of pollution is spread out ex. Lawns Point source pollution - pollution that enters water from a specific location ex. Drainpipe

3. Sources of Water Pollution trash sediment (loose rock or dirt) pesticides and herbicides fertilizers (contain nitrogen and phosphorus) untreated sewage chemicals, metals oil and gasoline heat

4. Federal Government Clean Water Laws 1. Water Pollution Act 1972 - Funds to build sewage treatment plants 2. Clean Water Act 1987 - set goals for reducing point source and non point sources of pollution 3. Safe Drinking Water Act 1996 - strengthened health standards for drinking water