Fresh water is our most precious
natural resource, as essential to life as the air we breathe.
Fortunately, most
of us in the United States don’t have to give it much thought, thanks, in large
part, to the federal Clean Water Act, passed in 1972.
But ongoing confusion over what
“Waters of the United States” fall under the law’s jurisdiction spurred the
Environmental Protection Agency (EPA) to propose a clarification.
This would enable the federal agency to better protect our wetlands, small
streams and other important watershed features without being dragged into court
every time someone wanted to avoid compliance by exploiting an ambiguity. The
public comment period for this rule-making closed Nov. 14.
I can only hope that the EPA has been
inundated with comments supporting the clarification, so that our freshwater
resources will be neither subject to the vagaries of state and local
authorities, nor to the whims of private landowners.
Their arguments seem to ignore that
the EPA’s proposed clarification is informed by decades of scientific research
about freshwater ecosystems, such as the work our scientists have been doing
since 1967. The River
Continuum Concept, published in 1980 by a team of scientists led by
Stroud Water Research Center, is a foundational concept in freshwater ecology.
It states that a river system represents a physical, chemical and biological
continuum from the smallest headwater streams to the main stem river at its
confluence with the estuary. Subsequent research around the world has not
only supported this concept but demonstrated that, in fact, small headwater
streams are the most critical and most vulnerable parts of a river.
Our scientists were part of the
scientific advisory panel that helped the EPA conduct a comprehensive review of
more than 1,000 peer-reviewed publications. This report concludes:
“The scientific literature clearly demonstrates that streams, regardless of their size or how frequently they flow, strongly influence how downstream waters function. Streams supply most of the water in rivers, transport sediment and organic matter, provide habitat for many species, and take up or change nutrients that could otherwise impair downstream waters.”
Moreover, more than 85 percent of the
nation’s stream miles are small enough to jump across and many — if not most —
of these flow through private property. So, while opponents may object to the
EPA having jurisdiction over streams on private land, landowners shouldn’t have
the right to pollute streams running through their property as they please.
The science tells us that watersheds
with protected wetlands, streamside forest buffers and other best-management
practices can support both humans and wildlife in a sustainable way. They trap
and store sediments; filter out contaminants; reduce the frequency and severity
of flooding by slowing the release of stormwater; mitigate thermal pollution
caused by deforestation, industrial inputs and water diversions; and replenish
underground aquifers.
For decades, science has demonstrated
the necessity of a holistic approach to understanding, protecting and restoring
freshwater ecosystems. This requires a nationwide effort. Water, like air,
transcends state, legislative and private property boundaries. Whatever happens
upstream affects us all.
It took an environmental wake-up call
to spur Congress to pass the Clean Water Act. The Cuyahoga River,
polluted from decades of Cleveland’s industrial waste, caught fire in June
1969. That event is thought to be among the many triggers that inspired the
founding of Earth Day in 1970.
This year there have been many events
that should similarly shake us out of complacency about our freshwater
resources:
- The record-breaking drought afflicting more than half of California.
- The massive algae bloom in Lake Erie that contaminated the tap water of nearly a half-million people in Toledo, Ohio, in August.
- The estimated 140,000 tons of toxic waste that spewed into the Dan River near Eden, N.C., in February.
- The 7,500 gallons of 4-methylcyclohexane that leaked into the Elk River and poisoned the drinking water for more than 300,000 West Virginians in January.
The alarm has sounded many times. We
hit the snooze button at our peril. If you care about having clean, safe fresh
water, please contact your U.S. congressman today and tell him or her to
support the EPA’s Waters of the United States clarification.
Bernard Sweeney, Ph.D., is
director and president of Stroud Water Research Center, a
Pennsylvania-based nonprofit, focused on freshwater research, environmental
public education and watershed restoration.