• One part of a distillation system boils drinking water into steam and a second part recondenses the ‘purified’ steam back into water.
• Distillation systems may take the form of countertop models and point-of-entry (whole house) systems.
• Distillation systems work quite well for people whose unfiltered/untreated drinking water contains heavy metals and elements such as copper, cadmium, chromium, lead, mercury, arsenic, selenium, barium, fluroide and sodium.
• Some people opt to combine a distillation systems with an activated carbon system for more complete drinking water purification. Adding the activated carbon drinking water filter to the purification systems allows it to remove bad tastes and odors and a well-rated activated carbon filter will filter out many hazardous contaminants such as heavy metals, disinfection byproducts (i.e. haloacetic acids and trihalomethanes to name a few), chlorine, radon, volatile organic chemicals, parasites, and pesticides.

Cation-Exchange Softener:

• Typically used to soften hard water (water containing excessive amounts of calcium and/or magnesium) by ‘trading’ minerals with a strong positive charge for those with a weaker positive charge.
• Often referred to as ‘water softeners’.
• You will find most systems of these water hardness treatment systems functioning as whole-house water filtration systems.
• These systems effectively remove calcium and magnesium (water hardness) which can build up and leave depositis in plumbing and faucet fixtures over time. Water softeners can also remove contaminants such as barium which can cause health problems in humans.

Activated Carbon Filter:

• Positively charged and highly absorbent carbon media in the filter attracts and traps many drinking water impurities.
• You will typically find these drinking water filter systems on countertops, as point-of-use faucet filters, and under the sink.
• A good system for eliminating bad tastes and odors and a well-rated activated carbon filter will filter out many hazardous contaminants such as heavy metals, disinfection byproducts (i.e. haloacetic acids and trihalomethanes to name a few), chlorine, radon, volatile organic chemicals, parasites, and pesticides.

Many of our readers have asked questions about reverse osmosis drinking water filtration systems and want to know more about them. Hence the purpose and reason for this deviation from the normal subject matter in this Water Testing Blog entry.

“Today, people are increasingly concerned about the quality of the water that they consume. Under the best of conditions, it’s possible that water may contain hazardous contaminants, ranging from dissolved organic and inorganic materials, to suspended particles and microorganisms. If you live in a home with older pipes, you may also be exposed to lead in your water. Even the chemicals, like chlorine and fluoride, that many municipalities add to water to kill bacteria or to fight tooth decay may be harmful to humans. If such chemicals are not used, your water could be harboring deadly parasites. If you suspect your water may contain microorganisms, lead, or other contaminants, have your water tested.

To decrease their exposure to possible contaminants, many people drink and cook with bottled water or put distillers or disposable cartridge filters on their water supply lines and faucets. However, bottled water may not be any purer than the water taken from your faucet, distilled water requires boiling and tastes flat, and although charcoal filters improve the taste and remove odors from water, they do little to remove chemical contaminants and microorganisms. If you find your water is contaminated, choose the correct water filtration system to correct the problem.

Reverse osmosis (RO) is generally recognized as the best system for purifying water while retaining good taste. The EPA recommends reverse osmosis filters for microbiologically safe water. Yet, an RO system alone will still allow certain waterborne germs to pass through. To knock out these types of contaminates, most RO systems incorporate some additional type of filtering, usually a replaceable carbon post filter. ( source )”

For those looking to purchase a good quality reverse osmosis drinking water filtration system, please take a look at the reverse osmosis units offered by FilterWater.Com, the Water Filter SuperStore

Many of our readers have asked questions about reverse osmosis drinking water filtration systems and want to know more about them. Hence the purpose and reason for this deviation from the normal subject matter in this Water Testing Blog entry.

“The reverse-osmosis water filter is usually installed beneath your kitchen counter. The filter commonly consists of five components: one or two sediment pre-filters, the RO membrane filter, a drain for reject water, a small treated water storage tank, and a carbon post-filter. In addition, an air gap is built into the faucet; this serves as a sanitary device by preventing wastewater from flowing back into the filter.

Most reverse-osmosis systems purify water in 3 to 5 phases. The early phases use pre-filters to remove particles of dirt and sediment, chemical contaminants, certain microorganisms, and odors; a middle phase employs the RO membrane itself to eliminate dissolved solids, metals, and other microorganisms; and a final phase actuates a carbon (charcoal) post-filter to eradicate any remaining traces of chemicals and odors, thereby improving the quality and taste of the water. ( source )”

For those looking to purchase a good quality reverse osmosis drinking water filtration system, please take a look at the reverse osmosis units offered by FilterWater.Com, the Water Filter SuperStore

Many different newspapers, magazines and other media outlets have published articles about the dangers presented by pressure treated lumber containing chromated copper arsenate. Studies have shown that over time, chromated copper arsenate treated lumber in wooden playgrounds, decks and other structured have a tendency to leach inorganic arsenic out of the wood, onto the ground, and potentially into the local drinking water supply.

“NEW YORK (August 27th, 2007) – More than thirty percent of New Orleans schoolyards tested two years after Hurricane Katrina are contaminated with arsenic in amounts two to three times the levels requiring cleanup under both state and federal law, according to findings released today by the Natural Resources Defense Council (NRDC). ( source )”

Children whose lives got thrashed apart by Hurrican Katrina returned home to their battered neighborhoods only to find their favorite playgrounds coated in cancer-causing arsenic which officials believe may have come from deposits of deeply buried old pesticide deposits which came to the surface when flood waters rushed through the city and eroded the soil, carrying the toxins wherever they went.

More proof that arsenic in pressure treated wood poses a danger to the environment. . .

The following text taken from an article written entitled “U.S. Tests for Arsenic in Playgrounds Sets” by Julie Hauserman and published in the St. Petersburg Time on 9/26/2001 ought to give the average parent nightmares:

“TALLAHASSEE — The U.S. government plans to take more than 1,000 samples at wooden playgrounds around the country to find out if the arsenic in pressure-treated lumber is leaking out.

The testing could start as soon as November, according to a draft plan released this week by the U.S. Consumer Product Safety Commission and the U.S. Environmental Protection Agency.

The government’s action follows a series of studies around the country — including soil tests commissioned by the St. Petersburg Times — that show that arsenic is leaking out of pressure-treated wood, one of the most popular building products in America. The wood is infused with a pesticide called chromated copper arsenate, or CCA.

EPA plans to make random calls to city parks, private schools, day care centers and public schools, asking for permission to test. The Consumer Product Safety Commission plans to test about 75 playgrounds, and also test lumber purchased at home-improvement stores around the country. Government testers plan to take some 750 soil samples.

The strategy could change, though, in the next month. It becomes final after a 30-day public comment period.

Ordinary pressure-treated lumber has enough toxic chemicals in it to rank it as a hazardous waste, but the industry got a special exemption years ago from hazardous waste laws. The wood is banned in several countries.

Some advocates hope the federal study will lead to a ban on pressure-treated wood at playgrounds, where children can pick up traces of arsenic.

“I think we know enough now to know that CCA wood is dangerous,” said Jane Houlihan, research director for the Environmental Working Group in Washington, which is pushing for a ban. “The government should be acting, not studying, at this point.”

To find out whether pressure-treated lumber leaks arsenic, the Times commissioned soil tests around five wooden playgrounds, picked randomly in the Tampa Bay area. Every test came up positive for arsenic, at levels higher than the state allows when polluters clean up contaminated neighborhoods.

Pressure-treated wood executives agree that arsenic leaches out, but say the levels are too low to worry about.

“The testing that’s been done in the past has consistently held up the safety of CCA wood,” said Mel Pine, spokesman for the American Wood Preservers Institute, an industry trade group. “We have every reason to believe these new tests will affirm the safety of our product.”

The Consumer Product Safety Commission last studied pressure-treated wood in 1990, testing seven wooden playgrounds purchased from “major U.S. manufacturers.” The study found that arsenic was leaking from the wood. The study looked only at a child’s risk for skin cancer from the arsenic and found “a small risk that should be reduced further if it can be practically accomplished.”

Arsenic can also cause neurological problems, birth defects and other kinds of cancer.

The Environmental Working Group and the Healthy Building Network filed a petition with the Consumer Product Safety Commission last spring, asking the government to ban arsenic-treated wood on playgrounds. That petition will be addressed at a public meeting in Bethesda, Md., Oct. 3.

On Oct. 22, a scientific panel convened by the EPA will explore the risk that arsenic-treated lumber may pose to children.

The wood-treatment industry is facing legal and regulatory challenges all over the country.

In Miami, a federal class-action lawsuit says the industry and home-improvement stores were negligent because they didn’t warn consumers that the wood contained toxic chemicals.

The EPA ordered the wood-treatment industry to add more warning labels on the wood, which should show up in stores before the end of the year.

Wood-treaters are also facing several personal-injury claims from people who say they have been poisoned by the wood. Some of those claims, including one filed by a Seattle teacher who was poisoned by arsenic wood when he built a raft, have been settled.

In Congress, U.S. Sen. Bill Nelson, D-Fla., is pushing a measure that would force the EPA to issue a report on arsenic-treated wood in just 30 days. He praised the government’s plan to do more tests.

“Thank goodness the Consumer Product Safety Commission is coming forth,” Nelson said. “The whole point of me doing my amendment and raising such a ruckus is to try to give some certainty to local government officials as to what they should do with their playgrounds. Some of them have closed, some of them have reopened. The county commissions and city councils need to have some definitive information — is the playground soil safe or not?”

In Florida, state Rep. Larry Crow, R-Dunedin, is pushing to ban arsenic-treated wood on playgrounds. The Florida Department of Environmental Protection has stopped buying arsenic-treated lumber for state parks, and the Florida Department of Health has convened a scientific panel to look at the risk that the wood may pose to children.

There are safer alternatives to arsenic-treated wood, and some of the same companies that sell arsenic-treated wood in the United States also sell the environmentally safer kind in countries that have banned arsenic-treated wood.

This summer, a Florida wood-treatment company became the first in state history to start treating wood without arsenic.

Large retailers like Lowe’s and Home Depot don’t carry the arsenic-free treated wood yet. Company spokesmen say there’s not enough consumer demand for it. ( source )”

Update: An ad campaign sponsored in part by Healthy Building Network has since convinced Lowe’s and Home Depot to stop selling arsenic treated wood. ( source )

No demand for safe lumber? Cost probably plays a factor in that, but that topic can get debated elsewhere. No one on the Water Testing Blog staff has a degree in Economics. . . but we all care about keeping dangerous compounds such as arsenic out of our (and your) drinking water.

Remember: Inorganic arsenic leaching from pressure treated wood typically goes into the ground where it can find its way into a stream, a river, the aquifer, someone’s well, and eventually someone’s drinking water.

How Can Homeowners Test for Arsenic in Wood?

A new test procedure developed by Industrial Test Systems, Inc. makes use of their patented, EPA/ETV^R Test Verified Arsenic Quick^TM test kit and provides accurate, repeatable arsenic in wood test results down to as low as 1 migrogram per liter in as little as 10 minutes. Suggested retail cost for 5 tests: $25.99 USD

International Aid Organizations worldwide make use of Quick^TM Arsenic testing kits to detect arsenic levels in water, wood and soil.

Many of our readers have asked questions about reverse osmosis drinking water filtration systems and want to know more about them. Hence the purpose and reason for this deviation from the normal subject matter in this Water Testing Blog entry.

“Reverse osmosis involves the passage of potable water through a semi-permeable membrane. In a normal osmotic reaction, water containing a dissolved substance in low concentration will flow through a membrane to the side containing a higher concentration of the dissolved substance. If pressure is applied to the side having the higher concentration of solution, the flow of water can be stopped or even reversed. When the flow is reversed, this is called ‘reverse osmosis.’ In this case, it is the water that has less dissolved substance that is desirable; this is the purified water.”( source )”

For those looking to purchase a good quality reverse osmosis drinking water filtration system, please take a look at the reverse osmosis units offered by FilterWater.Com, the Water Filter SuperStore

Study: Possible diabetes link to arsenic in water

“CHICAGO, Illinois (AP) — A new analysis of government data is the first to link low-level arsenic exposure, possibly from drinking water, with type 2 diabetes, researchers say.

The study’s limitations make more research necessary. And public water systems were on their way to meeting tougher U.S. arsenic standards as the data were collected.

Still, the analysis of 788 adults’ medical tests found a nearly fourfold increase in the risk of diabetes in people with low arsenic concentrations in their urine compared with people with even lower levels.

Research outside the United States has linked high levels of arsenic in drinking water with diabetes. It’s the link at low levels that’s new.” ( source )

Announcements about arsenic in water such as this one by the American Medical Association serve as strong, compelling proof that the amount of arsenic in our drinking water does matter and that it needs monitoring at regular intervals.

Fact: Arsenic levels in groundwater change as the water table rises and falls.

Fact: Operators of public water systems must test the arsenic levels in the drinking water they produce and report those levels to the Government on a very regular basis — or face serious legal and financial consequences.

Fact: Owners of private wells have no compelling legal reason to test their water for arsenic or that matter, anything. Responsibility for the safety of their drinking water lies squarely in their laps.

Given that arsenic levels may vary greatly from week to week and possibly even day to day, Water Testing Blog suggest that owners of private well heed the advice of organizations such as the National Ground Water Association and the United States Environmental Protection Agency and test their well water (or get their well water tested by a certified lab) at least once a year — and definitely make arsenic testing a part of that routine.

Home Drinking Water Test Kits for Arsenic

While do-it-yourself home drinking water test kits for arsenic such as the EPA/ETV Test Verified^® Arsenic Quick^TM do not take the place of water tests performed by certified laboratories, they do provide fast, reliable results in the field and work quite well as on-site screening tools for arsenic in drinking water.

• 481396-2, Arsenic Quick, 0 - 500 ppb, 12 minute test time, 2 tests
• 481396-5, Arsenic Quick, 0 - 500 ppb, 12 minute test time, 5 tests
• 481297-2, Arsenic Low Range Quick, 2 - 300 ppb, 12 minute test time, 2 tests
• 481303-5, Arsenic Quick II, 1 - 160 ppb, 14 minute test time, 5 tests

• Scale or ’scum line’ from too many from calcium or magnesium salts in water. total hardness test kit
• Unclear, murky or turbid water caused by suspended solids such as dirt, clay salts, silt or rust in water. tds test kit | tds meter
• Green stains forming on sinks or faucets as a result of high acidity. pH test kit
• Brown-red stains forming on sinks and fixtures, in the dishwasher, or on washed clothes may indicate the presence of dissolved iron in water. total iron test kit
• Initially cloudy water that clears up completely if allowed to sit undisturbed for a few minutes may have had fine/small air bubbles injected in it by a poorly working pump or because of a problem with filters.

If an Unusual or New Taste is Detected in Well Water…

• A salty or brackish taste in the water typically results from a high sodium content. chloride test kit
• Presence of an alkali/soapy taste may come from dissolved alkaline minerals in water.
• Acidity or a high iron content may result in a metallic taste. pH test kit | total iron test kit
• Chemical tastes are known to come from industrial chemicals or pesticides. pesticides test kit

If an Unusual or New Odor is Detected in Well Water…

• A rotten egg odor may be the result of dissolved hydrogen sulfide gas or certain types of bacteria in your water. Note, though, that if you only notice the smell coming from hot water, it is more than likely coming from a part in your hot water heater. hydrogen sulfide test kit
• You may notice a detergent odor and/or foaming water of seepage from septic tanks has gotten into your well.
• A gasoline or oil smell indicates (obviously) that some form of fuel oil or gasoline has found its way from a tank into the water supply.
• Decaying organic matter can result in a methane gas or musty/earthy smell coming from the water.
• Excessive chlorination of a well, or not waiting long enough after shocking a well with chlorine (obviously) results in a chlorine smell coming from the water. free chlorine test kit | total chlorine test kit

As always, if you suspect that your well has gotten contaminated in any way, always consult with a trained water professional. Do-it-yourself home water test kits like Well Water Check, COMPLETE Water Test Kit and the Drinking Water Test Kit serve as excellent screening tools but they do NOT have the same amount of accuracy as the results you can get from a certified water testing laboratory. It’s your well, your water, and ultimately — your life.

• Symptoms shown by a person afflicted by Giardia include, but may not be limited to, diarrhea, fatigue, and cramps.
• Symptoms shown by a person afflicted by Cryptosporidium include, but may not be limited to, diarrhea, nausea and stomach cramps. Additionally, this type of bacteria resists many common disinfection methods quite well.

note: Individuals with suppressed or compromised immune systems may exhibit worse symptoms for longer periods of time than peole with ‘healthy’ or ‘normal’ immune systems.

The best way to guarantee the safety of your water after a flood means getting the water tested by certified water professionals. Home water test kits for bacteria serve as excellent maintenance tools for checking the bacteria levels of well water, but in the event of an actual ‘incident’ such as a flood, which may have caused the contamination of your drinking water, always seek the advice and assistance of Water Quality Experts in your area.

Locating Certified Drinking Water Laboratories

The United States Environmental Protection Agency suggests you contact the State Certification Officer for Drinking Water Laboratories for your state.

Click here to access a list of contact phone numbers, email addresses and physical addresses for State Certification Officer for Drinking Water Laboratories on the United States Environmental Protection Agency web site.