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Home Inspector Series - Nitrite in Drinking Water


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Home Inspector Series for Nitrite in Drinking Water
Learn about EPA safe levels, harmful effects of nitrite, correct sampling procedures, and other great info from a professional analyst certified in drinking water analysis.

Published in: Technology, Business

Home Inspector Series - Nitrite in Drinking Water

  1. 1. Part of the Water Wisdom Series for Home Inspectors by: Scott J. Bradley
  2. 2. Home Inspectors and Nitrite <ul><li>Nitrite (NO2), is a form of nitrogen that is considered by the USEPA (Environmental Protection Agency), to be a Primary contaminant. </li></ul><ul><li>That means it is considered a threat to human health. </li></ul><ul><li>The USEPA maximum contaminant level (MCL), for nitrite is 1.0 mg/L (milligrams per liter, or one part per million). </li></ul><ul><li>Nitrite Ion» </li></ul><ul><li>picture courtesy: </li></ul>
  3. 3. Where does Nitrite come from?
  4. 4. Why are Home Inspectors Concerned about Nitrites in Drinking Water? <ul><li>Adults don’t have too much problem with small amounts of nitrites in their drinking water. </li></ul><ul><li>Nitrite attaches to hemoglobin, and can prevent or reduce the amount of oxygen the hemoglobin carries. </li></ul><ul><li>If a pregnant woman ingests too much nitrite, a condition called, “methemoglobinemia” – or </li></ul><ul><li>“ Blue-Baby” Syndrome can </li></ul><ul><li>occur in a fetus which </li></ul><ul><li>can be life threatening. </li></ul>
  5. 5. Home Inspectors Sampling for Nitrite in Drinking Water <ul><li>When sampling for nitrite in drinking water, let the cold water run for 3-5 minutes, or until the temperature has stabilized. </li></ul><ul><li>Collect at least 50 mLs. in a suitable plastic container, usually supplied by the testing lab. </li></ul><ul><li>Be sure to use a lab the is accredited for analyzing nitrite in drinking water. </li></ul><ul><li>Nitrate samples should be kept cool (4-6 C.) during transport to the lab, and must be analyzed within 48 hours from collection time to be valid. </li></ul>
  6. 6. Nitrite Contamination in Drinking Water <ul><li>Drinking water that is contaminated with high levels of nitrite is not considered potable. </li></ul><ul><li>Nitrite can be filtered out by reverse osmosis, but the best solution is to remove the source of contamination. </li></ul><ul><li>I send inquiries about filters and filtration products to the National Sanitation Foundation. </li></ul>
  7. 7. As a Professional Home Inspector <ul><li>You now know these things about Nitrite… </li></ul><ul><li>The molecular structure: two oxygen to one nitrogen </li></ul><ul><li>The EPA designation and MCL of 1.0 mg/L </li></ul><ul><li>Common sources of nitrite </li></ul><ul><li>Why it is dangerous to health </li></ul><ul><li>How to sample and transport a nitrite sample to a lab </li></ul><ul><li>How to filter and where to go for more filtration info. </li></ul>
  8. 8. Home Inspector Series: Nitrite <ul><li>I hope you enjoyed this issue of Water Wisdom for Home Inspectors, brought to you as a courtesy learning tool from Scott J. Bradley at Aquacheck Lab. </li></ul><ul><li> </li></ul><ul><li>1-800-263-9596 </li></ul>