1. Water Pollution

2. Nashua River

5. Types of Pollution Sewage
Nutrients
Sediments
Disease Causing Agents
Inorganic Chemicals
Organic Compounds
Radioactive Substances
Thermal Pollution

6. Eutrophication
Vocabulary and Concepts: Nutrient Enrichment Natural and Cultural Oxygen Sag Curve Dissolved Oxygen Biological Oxygen Demand Hypoxia Dead Zones Causes

7. Controlling Water Pollution
Identifying Sources
Point and Nonpoint Sources
Treatment Technologies
Point Source
Eliminate Pollutants from Waste Stream
RCRA and other laws
Individual Wastewater Treatment
Municipal Wastewater Treatment
Nonpoint Source
Agriculture
Mining and Forestry
Urban Runoff

8. Individual Sewage Disposal Systems (ISDS)
Requires
Sufficient Area for treatment
Management of Wastes
Septic Tank
Settling of solids
Requires Pumping
Leaching Field or Drainfield

9. Municipal Wastewater Treatment

10. Municipal Sewage Treatment
Primary
Secondary
Tertiary or Advanced

11. Packaged Waste Water Treatment

12. Nonpoint Sources Urban Runoff Agriculture
Mining (largely controlled by SMCRA)
Forestry

13. Urban Runoff
Urbanization increases the variety and amount of pollutants carried into our nation's waters. In urban and suburban areas, much of the land surface is covered by buildings, pavement and compacted landscapes with impaired drainage. These surfaces do not allow rain and snowmelt to soak into the ground which greatly increases the volume and velocity of stormwater runoff. In addition to these habitat-destroying impacts, pollutants from urban runoff include:
Sediment
Oil, grease and toxic chemicals from motor vehicles
Pesticides and nutrients from lawns and gardens
Viruses, bacteria and nutrients from pet waste and failing septic systems
Road salts
Heavy metals from roof shingles, motor vehicles and other sources
Thermal pollution from dark impervious surfaces such as streets and rooftops

14. Urban Runoff Control Technologies
Retention Ponds
Catch Basins
Education

15. Agriculture Buffer strips Erosion Control
Integrated Pest Management (IPM)

16. Forestry and Mining

17. Clean Water Act Criteria Point Sources NPDES Permits Funding for WWT
Protection of Wetlands
Section 404
Research and Control of non-point sources

18. Safe Drinking Water Act
1974 (amended 1986, 1996,
Requires EPA to determine Maximum Contaminant Level

20. International Water Pollution Issues
Access to clean water
Reduction of contamination
Competition for scarce resources