Warm Up Question – In your notebook Here is the definition of water pollution: The introduction of chemical, physical, or biological agents into water that degrade water quality and adversely affect the organisms that depend on the water. Would litter be considered water pollution?

Point vs. Non-Point Source Pollution

Point vs. Non-point Source Pollution Pollution discharged from a single source Source can be identified Can be regulated by law Many sources Difficult to identify origin “People pollution” Difficult to regulate

Point Source Pollution Examples: Discharge from pipe Leak at chemical plant or storage tank Oil Spill (BP 2010)

Point - Industrial

Point – Leaking Underground Storage Tanks

Point – Unlined Landfills

Point – Leaking Septic Tanks

Point – Acid Drainage from Mines

Non-Point Source Pollution Pesticides Fertilizers Animal Waste Road Salt Litter Sediment Runoff Oil and Gasoline

Non-Point Pollution

NonPoint – Acid Rain

NonPoint – Salting Roads

You may have seen this… Rainbow stain is created when motor oil leaks from vehicles onto roadways

People Pollution Lawn fertilizers and pesticides

When nobody’s looking…

When nobody’s looking…

Review- Point v. Non-point Examples POINT Source NON-POINT Source

Why are they bad? Road Salt- changes salinity of freshwater Pesticides- chemicals designed to kill Fertilizers- eutrophication Litter- wildlife, aesthetics ruined Sediment- suffocates, blankets riverbed Oil- affects oxygen levels, wildlife

Controlling Pollution Point Sources: Industrial discharges are regulated by the NJ Dept. of Environmental Protection (NJDEP) or EPA Monitored discharges Cannot exceed certain limits on pollution Once source is identified, we know who to blame Fines $$$

Non-Point Regulation More difficult to monitor/regulate because we don’t know the source Watershed Management, Education, Outreach Impose Restrictions, Fines, Penalties Silt fences for construction sites Fines for littering, pet waste, illegal dumping Farms have laws to regulate livestock waste

Watershed Management Land Use affects water quality Rain washes pollutants from watershed into water bodies As urbanization increases, NPS pollution increases

NonPoint – Urban Run-Off

Storm water Management Storm drains bring storm water directly to local waterways, NOT a Treatment plant!

The Storm Water Dilemma As urbanization increases  Impervious surfaces increase  More storm water is sent down drains at a faster rate  Localized flooding increases Constant problem in NJ

Silt fences- keeps sediments ON SITE

Farms- Riparian “buffer zones” Riparian vegetation = “near water” Having native vegetation near streams and rivers catches sediments and nutrients (N&P) before they reach the water

What can you do to prevent non-point source pollution?

What can you do? Non-point pollution prevention starts at home! Don’t Litter! Pick up after pets Limit fertilizer/pesticide usage at home Bring waste oil to auto body shop Maintain your vehicle

How are watersheds, aquifers (groundwater) and surface water all connected to point/non-point source pollution?

Wrapping Up… What is the difference between point and non-point source pollution? Name three examples of non-point source pollution. What is the purpose of a riparian buffer zone?

Extra Information “The Clean Water Book” http://www.nj.gov/dep/watershedrestoration/waterbook_tble.html “Frogline” Video on NPS Pollution- http://youtu.be/HhlPtNX5XTM