Jun 21

A new study found that tens of millions of people in Bangladesh have been exposed to poisonous levels of arsenic from contaminated groundwater. Millions of villagers get their water from private wells that have naturally high levels of arsenic.

The Lancet study found that as many as 77 million people, or half the population of Bangladesh, may have been exposed to toxic levels of arsenic. They followed 12,000 Bangladeshis over the course of 10 years and found more than 20% of deaths were caused by arsenic.

Chronic arsenic exposure can lead to heart disease and cancers of the liver, kidney, bladders and skin—even at relatively low levels of exposure:

Compared to those exposed to the lowest arsenic levels (less than 10 microgrammes of arsenic per litre of water), those with levels of 10-50ppb had a 34% higher risk of death.

The World Health Organization calls this “the largest mass poisoning of a population in history”. But what’s going on in Bangladesh is not unique. More than 70 countries around the world have issues with arsenic in their groundwater including the U.S.

The Minnesota Department of Health has found that 15% of private wells in Minnesota exceed 10ppb of Arsenic as shown on this map:

Minnesota Arsenic levels

Minnesota Arsenic levels

Premier Water has a successful track record of removing both Arsenic III and IV with reverse osmosis drinking water systems, and Pureoflow whole-house/business purification systems. Call us at (952) 479-4553 to find out more.

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Jan 13

The vulnerability of our city water distribution systems to disruption and contamination by potential terrorist or malicious acts has been well documented. These potential attack scenarios have the ability, if orchestrated successfully, to produce casualties on a massive scale.

Studies conducted by personnel at Hach Homeland Security Technologies, Colorado State University and the U.S. Army Corps of Engineers among others have shown that attacks on drinking water supplies could be mounted for between $0.05 and $5.00 per death, using rudimentary techniques, and could amass casualties in the thousands over a period of hours.

The simplest form of attack that could inflict mass casualties would be a simple backflow contamination event. A backflow attack occurs when a pump is used to overcome the water pressure in the distribution system’s pipes. This is usually around 80psi and can be easily achieved by using pumps available for rent or purchase at most home improvement stores.

After a contaminant has been pumped in, a siphoning effects acts to pull the contaminant into the flowing system. Once the contaminant is present in the pipes, the normal movement of water in the system will spread the contaminant throughout the city water system.

The introduction point can be anywhere in the system such as a fire hydrant, commercial building or a home. See figure 1.

Water System Attack

Fig. 1 All systems are vulnerable to backflow attack.

Backflows accidents happen on a regular basis and are of great concern to the water industry. Accidental backflow events have been found to be responsible for many incidents of water borne illness and even death in the United States. According to the USEPA, backflow events caused 57 disease outbreaks and 9734 cases of water borne disease between 1981 and 1998.

To prevent such accidental backflows many systems have been equipped with backflow prevention devices. These means of preventing backflow are very useful in preventing these common accidental events. Unfortunately, these physical devices that can be removed or disabled quite easily by a terrorist, rendering them ineffective in preventing deliberate attempts at contamination by all but the most amateurish perpetrators.

Studies conducted by the U.S. Air Force and Colorado State University have shown that a few gallons of highly toxic material, if injected at a strategic location, would contaminate an entire system supplying a population of 100,000 people in a matter of a few hours.

Using computer simulations, when a military nerve agent material was used over 20% of the population was determined to have received a dose adequate to result in death and when a common chemical was used in place of the warfare agent the result was a casualty rate of over 10%.

Thousands of deaths could result from this very inexpensive and low-tech mode of attack. There is no doubt that this form of assault meets all of the terrorist’s criteria for an attack. It would cause mass casualties, be inexpensive, and actually offer the terrorists a good chance of avoiding apprehension.

These sorts of attacks can occur from any access point to the water system. Wherever water can be drawn out, material can be forced back into the system. Some areas, however, are more vulnerable than others. Access points near high flow areas and larger pipes would be favored because they would disseminate the material to a wider area more quickly.

It should be obvious from the large number of accidental backflows that occur and the fact that terrorist organizations have shown an interest in attacking water, the distribution system is a prime candidate for such an attack.

The fact is a bona fide terrorist is virtually inundated by possible candidate substances and locations that would be very effective in such a role. The possibilities are virtually endless. Protecting against and/or detecting such an attack is difficult.

Recent breakthroughs in the online detection of contaminants have made the deployment of a cost effective early warning system capable of detecting and categorizing such events a reality. The simple truth is that these systems are not widely deployed.

This is a re-hash of an article written by Dan Kroll and Katy Craig of Hach Homeland Security Technologies.

1. Kroll,Dan. 2006. Securing Our Water Supply: Protecting a Vulnerable Resource.
PennWell Publishers. Tulsa, Oklahoma.
2. Hickman, Donald C. 1999. A chemical and biological warfare threat: USAF water systems at risk. Counter Proliferation paper No. 3. USAF Counter Proliferation Center, Air War College.
3. Kroll, Dan. 2003. Mass Casualties on a Budget. Confidential Briefing Paper. Hach HST.
4. U.S. Army Corps of Engineers. n.d. Calculations on threat agents and requirements and logistics for mounting a successful backflow attack.
5. Allman, T.P. 2003. Drinking water distribution system modeling for predicting the impact and detection of intentional contamination. Master’s Thesis. Department of Civil Engineering. Colorado State University.
6. USEPA 2002. Potential Contamination Due to Cross-Connections and backflow and the Associated health risks: An Issue Paper.
7. Allman, Timothy and Kenneth Carlson. 2005. Modeling Intentional Distribution System Contamination and Detection. Journal of the American Water Works Association.
January. Note: that the executive summary of this article is still available but the full text has been pulled from the AWWA website for security reasons as it was
determined that the details could be helpful to would be terrorists.
8. EPA. Water Security and You. http://cfpub.epa.gov/safewater/watersecurity/pubs/water-security-article.pdf

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Dec 10

After analyzing federal data, the New York Times found that 20 percent of the nation’s water treatment systems have violated key provisions of the Safe Drinking Water Act over the last five years.

That law requires communities to deliver safe tap water to local residents. But since 2004, the water provided to more than 49 million people has contained illegal concentrations of chemicals like arsenic or radioactive substances like uranium, as well as dangerous bacteria often found in sewage.

Regulators were informed of each of those violations as they occurred. But regulatory records show that fewer than 6 percent of the water systems that broke the law were ever fined or punished by state or federal officials, including those at the Environmental Protection Agency, which has ultimate responsibility for enforcing standards.

Studies indicate that drinking water contaminants are linked to millions of instances of illness within the United States each year.

In some instances, drinking water violations were one-time events, and probably posed little risk. But for hundreds of other systems, illegal contamination persisted for years, records show.

The New York Times has compiled and analyzed millions of records from water systems and regulators around the nation, as part of a series of articles about worsening pollution in American waters, and regulators’ response.

An analysis of E.P.A. data shows that Safe Drinking Water Act violations have occurred in parts of every state.

In the prosperous town of Ramsey, N.J., for instance, drinking water tests since 2004 have detected illegal concentrations of arsenic, a carcinogen, and the dry cleaning solvent tetrachloroethylene, which has also been linked to cancer.

In New York state, 205 water systems have broken the law by delivering tap water that contained illegal amounts of bacteria since 2004.

However, almost none of those systems were ever punished. Ramsey was not fined for its water violations, for example, though a Ramsey official said that filtration systems have been installed since then. In New York, only three water systems were penalized for bacteria violations, according to federal data.

It is unclear precisely how many American illnesses are linked to contaminated drinking water. Many of the most dangerous contaminants regulated by the Safe Drinking Water Act have been tied to diseases like cancer that can take years to develop.

Scientific research indicates that as many as 19 million Americans may become ill each year due to just the parasites, viruses and bacteria in drinking water. Certain types of cancer — such as breast and prostate cancer — have risen over the past 30 years, and research indicates they are likely tied to pollutants like those found in drinking water.

The violations counted by the Times analysis include only situations where residents were exposed to dangerous contaminants, and exclude violations that involved paperwork or other minor problems.

The E.P.A. has reported that more than three million Americans have been exposed since 2005 to drinking water with illegal concentrations of arsenic and radioactive elements, both of which have been linked to cancer at small doses.

In some areas, the amount of radium detected in drinking water was 2,000% higher than the legal limit, according to E.P.A. data.

But federal regulators fined or punished fewer than 8 percent of water systems that violated the arsenic and radioactive standards. The E.P.A., in a statement, said that in a majority of situations, state regulators used informal methods — like providing technical assistance — to help systems that had violated the rules.

Many systems remained out of compliance, even after aid was offered, according to E.P.A. data. And for over a quarter of systems that violated the arsenic or radioactivity standards, there is no record that they were ever contacted by a regulator, even after they sent in paperwork revealing their violations.

Those figures are particularly worrisome, say researchers, because the Safe Drinking Water Act’s limits on arsenic are so weak to begin with.

A system could deliver tap water that puts residents at a 1-in-600 risk of developing bladder cancer from arsenic, and still comply with the law.

We will be sure to follow this story as it continues to develop. There have been 100′s of similar stories over the last decade – a sign that the general public is becoming more concerned about water quality.

Information like this makes a comprehensive water treatment system like the Pureoflow an easy choice when it comes to “piece of mind”. No matter what you start with, the right treatment system can deliver safe, clean drinking water.

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Nov 05

In September, 2009 the EPA released its third update to the “contaminant candidate list” (CCL 3).  This is a list of substances which are not currently regulated in drinking water by the federal government but may be considered for future regulation.

The EPA and other stakeholders looked at 7,500 substances before coming up with the final list of 116 contaminants. After the EPA drew up a preliminary list, it added 10 pharmaceuticals, 1 antibiotic and 9 hormones, 2 disinfection byproducts, 5 microbes and firefighting foam.  The full CCL 3 list of contaminants can be found at this EPA Web site: www.epa.gov/safewater/ccl

Many of these substances that appeared on CCL 1 in 1998 have been “rolled over” into CCL 2 and now CCL 3 — an indication that they’re still considered potentially harmful. Examples of some that appear on the new CCL 3 and were also on prior lists are adenoviruses (viruses that can cause respiratory and gastrointestinal illnesses), acetochlor (a weed-control herbicide), vanadium (a natural element), and cyanotoxins (produced by blue-green algae).

The Water Quality Association (WQA) recently proposed that removal/reduction of the following 17 substances, some of which are endocrine-disrupting chemicals, pharmaceuticals, or personal care products, could be priorities for developing new NSF/ANSI performance standards for drinking water treatment units. None of these are now regulated:

Atenolol: Beta blocker (heart) medication

Bisphenol A (BPA): Ingredient in plastic/EDC

Carbamazepine: Anti-seizure medication

DEET: Insecticide

Diazinon: Insecticide/EDC

Estrone: Steroid (estrogen hormone)

Ibuprofin: Pain medication

Linuron: Herbicide/EDC

Meprobamate: Anti-anxiety medication

Metolachlor: Pesticide

Naproxen: Pain medication

Nonyl phenol: Surfactant (cleaning compound)/EDC

Phenytoin: Anti-convulsant medication

Risperidone: Schizophrenia treatment

TCEP: Flame retardant

TCPP: Flame retardant

Trimethoprim: Antibiotic

Future Role of the Water Treatment Industry
The water treatment industry “can offer the most advanced technologies available for dealing with endocrine-disrupting, pharmaceutical and personal care product residues in drinking water,” says Joe Harrison, technical director of the Water Quality Association (WQA). “We welcome the EPA benchmarks to guide our product development and performances in this new emerging area.”

Harrison says there’s no single POU/POE technology that can address all emerging contaminants. He says, “It appears that reverse osmosis (RO), activated carbon blocks, and advanced oxidation, such as is achieved by combining in various degrees hydrogen peroxide, ultraviolet light and/or ozone … may show effectiveness in treating many of these.”

Premier Water Technology has been dealing with problem water applications since 1978.  As water quality continues to change, we are prepared to face the new challenges that lie ahead.  We have a proven track record with known contaminants like Arsenic and Coliform Bacteria.  It’s strange to think we will someday offer water treatment solutions for anxiety medications, hormones, and flame retardants.

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Oct 30

The city of Burnsville, MN got so many complaints about the foul odor and taste in their drinking water that they brought in an outside water consultant to figure out what’s causing the problem.

One resident described the city’s tap was as “Chlorinated, dirty, smelly, scummy pond water”.

Independent testing confirmed chlorine levels at .7ppm (parts per million) which is about the same as a swimming pool.  Most communities in the Twin Cities have chlorine levels that range from .3ppm – .5ppm.

The water problems seem to come from a new city water treatment plant that re-uses waste water from a Burnsville mining company.  Officials say the cause of the foul odor is from build-up of algae and organic compounds.

Officials say as bad as the water might smell, it doesn’t pose any health risks.  The city is working on the problem, but unfortunately, it can’t happen overnight.

“It’s perfectly safe to drink. There’s no concerns with that. You might not like the smell or the taste at this time, but it is getting better,” said Burnsville City Council Member Dan Gustafson.

Burnsville, like many suburbs in the Twin Cities, does a good job at keeping their tap water “safe”, but not necessarily “delicious”.  More and more homeowners and businesses are dissatisfied with tap water because of this.

The water filtration and purification systems we carry are both environmentally-friendly and cost-effective solutions to these tap water dilemmas.  Our clients get water that is safe AND great tasting: You should too!!!

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Oct 12

The New York Times has compiled a dabase with data on more than 200,000 facilities that have permits to discharge pollutants and collected responses from states regarding compliance. The information in this database comes from the Environmental Protection Agency and the California State Water Resources Control Board.

 

Click here to see where Minnesota pollution comes from.

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Oct 09

WASHINGTON — The US Environmental Protection Agency announced on October 7 the that they will launch a comprehensive new evaluation of atrazine, one of the most widely used agricultural pesticides in the United States, to determine its effects on humans. The EPA’s plan calls for a September 2010 presentation of its evaluation, at which time the agency will seek peer review.

Atrazine is listed as a primary drinking water contaminant by the EPA. The agency now sets the maximum contaminant level (MCL) of atrazine in drinking water at 3 parts per billion (ppb) (3 micrograms per liter), but it adds that levels in excess of that pose health risks over a long period. On its Web site, the agency says, “An occasional peak concentration above 3 ppb is, therefore, not cause for concern. Rather, a long-term, consistent value above a yearly average of 3 ppb would be of concern.”

A recent investigation by The New York Times found that levels of atrazine, often applied before and after planting to control broadleaf and grassy weeds, have spiked well above the allowable maximum in many public water systems, sometimes for as much as a month at a time, but few water systems have reported those occurrences.

So it looks like Atrazine could follow in Arsenic’s footsteps, which ended up having it’s “Allowable Limit” lowered from 50ppb to 10ppb.  It makes you wonder what will be allowed 10, or 20 years from now.  What was once considered safe could be considered dangerous.

Yet another reason to bathe and drink the purest water you can.


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