Why Test Your Water?
Well water can be full of a number of toxic chemicals and other contaminants that cause chronic health issues. Many people have contaminated wells without even knowing!
Alkalinity
The alkalinity of water results from high levels of ions such as carbonates, bicarbonates, and hydroxides. The alkalinity of water has the capacity to neutralize acid. Highly alkaline water often has an acrid, soda taste. Alkaline water can result in dry skin.
Arsenic
Arsenic naturally occurs in air, water, soil, animals, and plants. Arsenic commonly comes into contact with drinking water via natural deposits in the ground or from industrial sources (present in soaps, drugs, paints, etc.) and agricultural practices (i.e. in fertilizers). Arsenic is tasteless and odorless. Arsenic is highly toxic. Long-term exposure to drinking water containing arsenic will cause skin, urinary bladder, lung, and kidney cancer. It is also known to assist in the development of diabetes. High amounts of arsenic have been found in groundwater wells in Fairbanks area and on the Kenai Peninsula. For more information:
World Health Organization - “Arsenic in Drinking Water”
http://www.who.int/mediacentre/factsheets/fs210/en/
EPA – “Arsenic in Drinking Water”
http://www.epa.gov/safewater/arsenic/index.html
Analytica – “Water Quality Fact Sheet: Arsenic”
http://www.shermanengr.com/downloads/WaterQualityFactsheet-Arsenic.pdf
Copper
Copper occurs naturally in air, water, soil, rock, sediment, animals, and plants. It has an important role in our diet, assisting our bodies’ enzymatic activity and metabolism. There are no known diseases associated with high levels of copper intake, but it could cause slight irritation in the intestine and stomach and extreme exposure could cause nausea, diarrhea, and vomiting. Copper can also cause blue-green staining on sinks, plumbing, etc. . For more information:
Wisconsin Department of Natural Resources – “Copper and Your Health”
http://dnr.wi.gov/org/water/dwg/copper.htm#how%20do%20i%20know
Fecal Coliform - Escherichia coli (E. coli)
E. coli is a part of the fecal coliform group which comes from the digestive systems and feces of warm-blooded animals. There are both harmless and harmful forms of E. coli. The harmful forms can cause dysentery, diarrhea, and hepatitis.
Hard Water
Water is “hard” when it contains high levels of dissolved minerals such as calcium and magnesium. On the other end of the spectrum, soft water contains little or no dissolved minerals. When water moves through rock and soil it picks up trace amounts of minerals and increases in hardness. Hard water is not known to cause health problems but it can leave mineral deposits on pipes (reducing pipe diameter) and cause soap curds. Some more recent studies suggest that some magnesium and calcium intake via hard water can actually help with disease prevention (i.e. cardiovascular disease).
Iron
Iron commonly forms as a result of high oxygen content in water. Deep aquifers or wells with low oxygen content are at less risk of iron formation. At the levels commonly found in drinking water, iron is not a health threat. Iron does cause an unpleasant taste and stain (laundry, sinks, etc). Iron can clog filters, systems, and screens resulting in expensive repairs. For more information:
“Iron in Drinking Water” – A Pacific Northwest Extension publication http://info.ag.uidaho.edu/PDF/PNW/PNW589.pdf
Langelier Index
The Langelier Index is a method of calculating the level of calcium carbonate saturated in water. Calcium carbonate can deposit, dissolve, or be in equilibrium with water. If the Langelier Index reads positive than the calcium carbonate will deposit, and if the Langelier Index reads negative than the calcium carbonate will dissolve. A zero reading indicates that the water and calcium carbonate are at a state of equilibrium.
Lead
Lead is common both in residential piping and the environment. An accumulation of lead can damage the kidneys, red blood cells, and the brain and cause high blood pressure. Pregnant woman, children, and fetuses are at the most risk. . For more information:
Center for Disease Control - “Lead in Water: Questions and Answers” http://www.cdc.gov/nceh/lead/faq/leadinwater.htm
The National Lead Hotline: 1-800-424-LEAD (E.S.T.)
Manganese
Manganese occurs naturally in rocks, soil, and ground water but can also result from pollution sources underground. It can change the taste, odor, and color (brownish-red) of water. Exposure to elevated levels over a number of years can be toxic to the nervous system. . For more information:
Connecticut Department of Public Health – “Manganese in Drinking Water”
http://www.ct.gov/dph/lib/dph/drinking_water/pdf/manganese.pdf
Nitrogen
Nitrogen in the ground water comes in the forms of nitrate, ammonia, and nitrite. It can get in your well water from wastewater, animal waste, flooded sewers, fertilizers, private septic systems, polluted storm water runoff, decaying plants, and agricultural runoff. It can be extremely toxic, especially to kids under six months old and to aquatic life. Infants exposed to nitrate can acquire methemoglobinemia, also known as blue baby syndrome. . For more information:
“Information for you about Nitrate and Nitrite & Ground Water” http://www.watersystemscouncil.org/VAiWebDocs/WSCDocs/9066584Nitrate_and_Nitrite_FINAL.pdf
pH
pH levels indicate how basic or acidic your water is. Water with a low pH (<6.5) is commonly soft, acidic, and corrosive. It may contain elevated levels of toxic metals, can cause corrosion to piping, and cause blue-green staining, and a sour or metallic taste in water. Water with high pH (> 8.5) is commonly hard. There a generally no associate health risks, but the water may taste bitter, soap will not lather, and deposit build up on pipes, dishes, etc. can result.
Sodium
Sodium occurs naturally in some drinking water or can result from salt water intrusion (if near the ocean). High levels of sodium intake can result in high blood pressure. Note that sodium is added to water in the water softening process because it is used to replace high calcium and magnesium levels in “hard” water.
Total Coliform
Coliform comes from the digestive systems of warm-blooded animals. Not all coliform bacteria are bad, but if you test for “total coliforms” and levels are unusually high, then it is more likely that harmful bacteria are present in your water.
Total Dissolved Solids (TDS)
“Dissolved Solids” refer to the salts, minerals, metals, etc that have been dissolved into the water. TDS can come from sources such as urban run-off, sewage, water treatment chemicals, piping, salt deposits, mineral springs, etc. TDS can consist of both inorganic salts and organic matter (i.e. sodium, magnesium, potassium, calcium, sulfates, chlorides, and bicarbonates). High levels of TDS can make water undrinkable or extremely bad tasting, commonly salty or bitter.
Links to more information
“Water on Tap: What you Need to Know” – This packet contains a broad amount of information regarding well water; extremely comprehensive.
http://www.epa.gov/ogwdw/wot/pdfs/book_waterontap_full.pdf
www.epa.gov/ogwdw/wot/index.html (for other language options)
“Drinking Water from Household Wells” – This useful packet has answers to an array of different questions regarding well water.
http://www.epa.gov/privatewells/pdfs/household_wells.pdf
“Private Ground Water Wells” - CDC
www.cdc.gov/ncidod/dpd/healthywater/factsheets/contaminants.htm
“Drinking Water: Testing for Quality” - NebGuide
http://www.ianrpubs.unl.edu/epublic/live/g907/build/g907.pdf
