The Environmental Protection Agency (EPA) has
listed 28 chemicals and two viruses that 6000 public water systems will
monitor from 2013 to 2015.
They are part of the agency's
program to monitor unregulated contaminants suspected to be present in
drinking water, but that do not have health-based standards set under
the Safe Drinking Water Act (SDWA).
EPA will spend more
than $20 million on the monitoring, most of which will go to small
drinking water systems for laboratory analyses, shipping and quality
control. The data collected under the program is expected to show the
frequency and levels at which the contaminants are found and help the
agency determine if additional protections are needed.
The list includes total chromium and hexavalent
chromium, also known as chromium-6, which has been the focus of some EPA
concern.
Nancy Stoner, acting assistant administrator for
water, said EPA selected the target chemicals from a list of priority
contaminants that need additional research and are known or anticipated
to occur in public water systems. Some contaminants of concern were
selected based on current occurrence research and health-risk factors.
EPA
has standards for 91 contaminants in drinking water. The SDWA requires
it to identify up to 30 additional unregulated contaminants for
monitoring every five years.
Green Infrastructure
EPA and Philadelphia plan a $2 billion program to promote green infrastructure.
Over
the next 25 years, the partnership agreement will transform many of
Philadelphia's hardened surfaces to green areas to better manage
rainwater runoff pollution. The federal–city partnership will promote
EPA's Green City, Clean Waters Plan as a national model for cities
embracing green stormwater infrastructure.
The agency will
help Philadelphia identify and promote green infrastructure designs,
provide research and technical assistance, and monitor the effectiveness
of the program.
Mayor Michael Nutter said, "Where other
cities are challenged by very expensive commitments for tunnels, tanks
and other gray infrastructure, we have worked with the state and the EPA
to take this greener, more fiscally prudent approach that will realize
multiple benefits."
Separately, a report on green
infrastructure has outlined practices that promise more cost-effective
solutions to lower energy expenses, reduce flood damage, and improve
public health.
American Rivers, the Water Environment
Federation (WEF), the American Society of Landscape Architects, and
ECONorthwest released the study.
Green infrastructure
refers to practices like green roofs, rain gardens, bioswales, and
pervious pavement that capture and treat rainwater and runoff. These
measures reduce the amount of polluted runoff the water that mixes with
oil, pesticides, and other pollutants as it rushes over streets, parking
lots, and yards into local streams.
Jeff Eger, WEF
executive director, said, "Case studies shared in this report should be
helpful to communities around the country and are from areas where green
infrastructure is already making a difference."
The report
noted that New York City's plan to reduce combined sewage overflows
will save an estimated $1.5 billion over 20 years by incorporating green
infrastructure rather than relying solely on traditional gray
infrastructure like pipes.
It said in Baton Rouge, La., a
high school spent $110,000 on bioswales and a rain garden to reduce
flooding rather than the $500,000 it would have cost to re-pipe the
site.
And a Natural Resources Defense Council (NRDC) report
has used Philadelphia as an example of how a stormwater fee and credit
system can generate funds for green infrastructure investments.
Climate Change
NRDC
has reported that only nine states have taken comprehensive steps to
address their vulnerabilities to the water-related impacts of climate
change.
It studied four preparedness categories to
delineate best-prepared states (Alaska, California, Maryland,
Massachusetts, New York, Oregon, Pennsylvania, Washington, and
Wisconsin).
The report focused on how state governments are
planning and preparing for climate change impacts such as more severe
and frequent storms, intense rainfall, sea-level rise, warmer water
temperatures, and drought events.
NRDC said "Rising
temperatures and more extreme weather events are impacting our families,
our health and our pocketbooks. Water is a matter of survival. It
powers our lives and industries, and it keeps our natural systems
healthy."
The study said states can take proactive steps to
minimize climate change impacts, such as: cutting emissions from power
plants, vehicles and other major sources of heat-trapping pollution;
investing in energy efficiency and renewable energy; conducting
vulnerability assessments; planning to address climate risks in all
sectors; supporting implementation of those plans; and updating the plan
as needed.
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