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WHICH U.S. CITIES HAVE "RISK" OR POTENTIALLY UNSAFE WATER?

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We often take the purity of our tap water for granted -- and we shouldn't. A recent study (NRDC's What's on Tap?) a carefully researched, documented and peer-reviewed study of the drinking water systems of 19 U.S. cities, found that pollution and deteriorating, out-of-date plumbing are sometimes delivering drinking water that might pose health risks to some residents. Many cities around the country rely on pre-World War I-era water delivery systems and treatment technology. Aging pipes can break, leach contaminants into the water they carry and breed bacteria -- all potential prescriptions for illness. And old-fashioned water treatment -- built to filter out particles in the water and kill some parasites and bacteria -- generally fails to remove 21st-century contaminants like pesticides, industrial chemicals and arsenic. The research also found one overarching truth: If steps are not taken now, our drinking water will get worse.

The U.S. government is making the problem worse instead of better. Seemingly more concerned about protecting corporate polluters than protecting public health, the administration is campaigning to hobble existing laws, thwart efforts to strengthen current pollution standards and cut funds for programs that protect tap water. Government -- whether city, state or federal -- should be doing all it can to ensure that citizens get clean, safe drinking water every time they turn on a faucet or stop at a public water fountain. And an informed, involved citizenry is the key to the process; it's through analyzing the report data that all Americans get the opportunity to look into the quality of their city's water supply, and to demand that our elected officials do what's necessary to provide safe tap water.

The recent report issues grades for each studied city in three areas: water quality, right-to-know reports, and source water protection. Good drinking water depends on cities getting three things right:

  • Lakes, streams, reservoirs and wells must be protected from pollution
  • Pipes must be sound and well-maintained
  • Modern treatment facilities are a must.
  • If just one of those three factors goes away, water quality will suffer. For example, these four cities have fair-to-substandard drinking water:
  • Atlanta, which maintains its distribution system poorly
  • Albuquerque and San Francisco, which have poor treatment systems
  • Fresno, which has no real source water protection.

So what does all this mean in terms of what's actually in your water glass? If your city has a water quality problem, your tap water may at times carry a worrisome collection of contaminants. Tap water can contain a vast array of contaminants, but a handful showed up repeatedly in the water of these cities: Lead, which enters drinking water supplies from the corrosion of pipes and plumbing fixtures and can cause brain damage in infants and children; Pathogens (germs) that can make people sick, especially those with weakened immune systems, the frail elderly and the very young ; By-products of chlorine treatment such as trihalomethanes and haloacetic acids, which may cause cancer and reproductive problems; Arsenic, radon, the rocket fuel perchlorate and other carcinogens or otherwise toxic chemicals contaminants like these get into our water from many different sources.

A few examples: runoff from sewage systems that overflow after a heavy storm; runoff from contaminant-laden sites like roads, pesticide and fertilizer-rich farms and lawns, and mining sites; wastes from huge animal feedlots; and industrial pollution that leaches into groundwater or is released into surface water. A high level of any of these contaminants in your water represents a failure of your city's "water treatment train" -- a series of steps your water is put through to filter and disinfect it before it is delivered to your tap. By extension, it also represents a failure by your government -- local, state and federal -- to protect your water supply and ensure that pure, safe and good-tasting water is supplied to your home. NRDC's study found that relatively few cities are in outright violation of national standards for contamination of drinking water, but this is more a result of weak standards than it is of low contaminant levels.

For example, cancer-causing arsenic is currently present in the drinking water of 22 million Americans at average levels of 5 ppb, well below a new EPA standard for arsenic of 10 ppb that will go into effect in 2006. Yet scientists now know that there is no safe level of arsenic in drinking water. (The EPA found that a standard of 3 ppb would have been feasible, but industry lobbying and concerns over treatment costs prevailed over public safety.) Many cities failed to meet the EPA's "level of concern" for various contaminants that are not yet regulated. Studies also yield another broad truth about the nation's drinking water "treatment trains": many cities show an increase in the frequency of periodic spikes in contaminant levels, indicating that the World War I-era plumbing and water treatment facilities still widely employed may be inadequate to handle contaminant spills or even the basic daily contaminant loads produced by our heavily industrialized, densely populated cities. And spikes above the EPA's standards generally don't trigger a violation; usually only an average level over the standard is considered a violation.

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The bottom line is this: the tap water in some cities might pose health risks to vulnerable consumers -- people who have serious immune system problems, pregnant women, parents of infants, those with chronic illnesses and the elderly should consult with their health care providers about the safety of tap water. Your Right to Know What's in Your Tap Water. The first question that one would logically ask on reading the above is, "How do I find out what's in my water glass?" And according to U.S. law, every citizen is entitled to a straight answer. Every city is required to publish reports about the safety and quality of its drinking water system. The problem the study found, is that while some cities do a good job with their right-to-know reports, others publish information that is incomplete or misleading: Reports from Atlanta, Boston, Fresno, Houston, Newark, Phoenix, Seattle and Washington, D.C. included false, unqualified or misleading claims, or buried crucial information about problems deep in their reports; Reports from Newark, New Orleans and Phoenix included incorrect or misleading data -- or omitted it entirely; Nearly all cities in the study failed to report on health effects of most contaminants found in their water; Most of the cities studied failed to translate the reports into languages spoken by a large minority in their community.These right-to-know reports hold enormous promise. In addition to informing citizens about the state of their city's water system, they can also build support for investment and encourage citizens to participate in fixing local problems.

Protecting the Source.

The first line of defense in ensuring the safety and quality of drinking water is to ensure that water sources -- lakes, rivers, streams and aquifers (porous underground formations that hold water) -- are protected from pollution. And as indicated above, there are many ways that contaminants get into source water, among them:

  • Municipal sewage
  • Polluted runoff from stormwater or snowmelt in urban and suburban areas
  • Pesticides and fertilizers from agricultural fields
  • Animal waste from feedlots and farms
  • Industrial pollution from factories
  • Mining waste
  • Hazardous waste sites
  • Spills and leaks of petroleum products and industrial chemicals "Natural" contamination such as arsenic or radon that occurs in water as a result of leaching or release of the contaminant from rock.

To keep such contaminants out of tap water, a city's first step is identifying where pollution is coming from. Once these sources are known, the water utility, city planners and citizens of a municipality must work together to figure out how to reduce the threat of contamination. Land purchases often prove useful, allowing the water utility to establish a pollution-free zone around source waters. Utilities may also ban boating and other recreational activities on these waters, push for improved pollution controls, or protect wetlands (which replenish and purify source waters). Some cities are doing a fine job of protecting their drinking water supply. Seattle is doing an excellent job of protecting source water; Boston, San Francisco and Denver also get high marks.

But many other cities have a long way to go: Albuquerque's groundwater is becoming seriously depleted; Fresno's groundwater is highly susceptible to contamination; In Atlanta, Chicago, Detroit, Houston, Los Angeles, New Orleans, Newark, Philadelphia, Phoenix, San Diego and Washington, D.C., source water is threatened by runoff and industrial or sewage contamination; Water supplies in Baltimore, Fresno, Los Angeles, New Orleans, San Diego and several other cities are vulnerable to agricultural pollution containing nitrogen, pesticides or sediment; Denver's source water faces an additional challenge from debris from wildfires and sediments from floods; Manchester's problems apparently come from recreational boating activity in its reservoir.

An informed, involved public is a water utility's strongest ally in an effort to better protect its water supply. The report recommends that citizens urge legislators not to pull the plug on safe water supplies - to stop broad assault on Clean Water Act protections and inform Congress to act to strengthen the laws and contaminant standards we have in place to protect the purity and safety of our drinking water.


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