=A series of
disasters in the
and early 70’s
In 1969, bacteria levels in the Hudson
River were at 170 times the safe limit
that 87 percent
levels that were
unfit for human
Cuyahoga River Catches Fire
Near Cleveland, OH, a floating oil slick burst into flames
1969 Lake Thonotosassa Fish Kill
26 million killed in Lake Thonotosassa, FL,
due to discharges from four food processing plants
By 1972 two-thirds of the country's lakes, rivers and
coastal waters had become unsafe for fishing or
swimming. Untreated sewage
was being dumped into open water.
Does the Clean Water Act Work?
Even after 30 years of
pollution is still a big
problem in the U.S.
Today, 39% of the
rivers, 45% of the
lakes, and 51% of the
Clean Water Successes?
In 1997, (The 25th Anniversary of the CWA) more
than 60 percent of the nation's waters now support
fishing and other uses, and while the U.S. population
grew considerably since 1972, modern wastewater
treatment facilities helped pollutant levels in the
nation's waters fall 36 percent.
1. How Did the Clean Water Act Get Started http://drake.marin.k12.ca.
2. Wikipedia. The Clean Water Act. http://en.wikipedia.org/wiki/Clean_Water_Act
3. NOW with Bill Moyers. A Brief History of the Clean Water Act.
4. Wikipedia. Mountain Top Removal. http://en.wikipedia.
5. Wikipedia. Intermittent Stream. http://en.wikipedia.org/wiki/Stream
6. Wikipedia. Playa. http://en.wikipedia.org/wiki/Playa
7. US Forest Service. Wetlands Non-Tidal Marshes: Prairie Pothole
8. Wikiapedia. Wetlands. http://en.wikipedia.org/wiki/Wetland