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Any safety factors? A change in the taste, odor, or clarity of your water may indicate that your water is no longer safe to drink. When replacing your pump or drilling a new well, it is advisable to test for water quality. If an infant or elderly person will be joining your household, testing to ensure their safety may be in order. Documentation Many homeowners have had their water supply suddenly become unusable. Reasons could include the following: spilling or misapplication of chemicals or fuels; leaking underground tanks; farm runoff; overloaded septic systems; or nearby well drilling, to name a few. Without proof of water quality prior to the incident, homeowners may be unable to receive reimbursement for the cost of restoring safe water. Periodic analyses of the water supply may provide the evidence needed. Buying Water Treatment Equipment Most of our friends in the water-treatment business are reputable and honest. Others, however, may use fear tactics and emotion to sell unneeded or over-priced equipment. Water treatment equipment can be very effective, but only if the system is properly engineered. A "free" analysis, provided by a salesman, may be unreliable. All tests should be done at an accredited laboratory. Send copies of your lab reports, together with a description of the problem, to at least three treatment companies. By shopping around, you could find a better price, and by comparing companies, you may get a better system, too! 3. When should I get my water tested? Flooding or drought may affect the quality of your water supply. Regulatory agencies suggest that, as a standard precaution, private water supplies should be checked quarterly for the presence of total Coliforms. This is an indicator for dangerous bacteria. 4. What will you test? What to test for depends upon the reason for testing (see "Why" & "When"). Recommendations No matter how many analyses we do, we can never absolutely guarantee that your water is safe. There are too many pollutants (the list is practically endless), and the tests are expensive. We can, however, recommend certain tests based upon your unique situation. Priorities For those interested in having their water tested, but have no specific concerns, we recommend the following analyses: Priority One: Total Coliform Bacteria The availability of bacteriologically safe water is probably the most essential ingredient needed for good health. The Total Coliform test is used to Indicate this. Next Priority: Lead, Nitrate, and VOCs Lead: Lead is thought to be responsible for permanent brain and nervous system damage in hundreds of thousands of children. Lead pipes and solder, found in old homes, are usually the source of this pollutant. Draw this sample after the water has sat at least 6 hours, and before using any water. Nitrate: High concentrations of Nitrate are common in agricultural areas and can be toxic to infants under two years of age. VOCS: Volatile Organic Compounds (VOCs) are man-made liquid chemicals. Because VOCS are used so often, they frequently appear in drinking water supplies (due to spills). Laboratories test for a list of common VOCs which include dry cleaning fluids and gasoline components. Other Priorities Langelier Index (L.I.), also known as Corrosivity, indicates the tendency of water to cause scaling, be corrosive, or be neutral. Sodium is a "must" analysis for anyone on a salt-restricted diet or at risk of high blood pressure. Iron and/or Manganese, when present even at low levels, cause either reddish-brown (iron) or grayish-black (manganese) stains. Conventional water softeners may be fouled by these "nuisance" contaminants. Knowledge of their presence could extend the life of your softener. 5. Interpretation Lab employees are not doctors or public health experts and can not interpret the anticipated health affects of the test results. We can, however, provide a comparison of your test results with guidelines and standards established by state and federal regulatory agencies. For additional help, see your doctor or call your regional DEP water quality specialist. Phone numbers for the DEP are available from your lab. You may also contact the EPA Safe Drinking Water Hotline at 800-426-4791. © 1997 Brandywine Science Center All Rights Reserved |
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