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MCB, Quantico s Drinking Water Quality Lead and Copper Sampling

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MCB, Quantico s Drinking Water Quality Lead and Copper Sampling

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    1. MCB, Quantico’s Drinking Water Quality Lead and Copper Sampling Natural Resources & Environmental Affairs Branch G-5 Facilities Division, MCB, Quantico

    2. Drinking Water Quality - Lead and Copper 2 Lead and Copper Background Information Lead and copper enter drinking water primarily through plumbing materials that have corroded. Exposure to lead and copper may cause health problems ranging from stomach distress to brain damage. On June 7, 1991, the EPA published additional regulations known as the Lead and Copper Rule (LCR) to control lead and copper in drinking water (i.e., potable water). In 2004, it was revealed that many homes in the District of Columbia had high concentrations of lead. In response, on September 25, 2007, the EPA revised the LCR to : Strengthen and clarify how utilities must test for lead and copper Require utilities have a better method of notifying customers of sample indicating the water is unsafe for consumption.

    3. Drinking Water Quality - Lead and Copper 3 Summary of 2007 LCR Revisions The 2007 Lead and Copper Rule (LCR) revisions have four new basic requirements: Requires water suppliers to optimize their water treatment system to control the corrosion in customer’s plumbing; Determine drinking water concentrations of lead and copper for customers who have lead service lines or lead-based solder in their plumbing system; Rule out the source water (e.g., well-water, rivers, reservoirs, lakes, etc.) as a source of significant lead levels; and, If lead action levels are exceeded, the LCR requires the water suppliers educate customers about lead and suggest actions they can take to reduce their exposure to lead through public notices and public education programs.  (more info)

    4. Drinking Water Quality - Lead and Copper 4 How Does Copper Get Into Your Drinking Water? Copper may occur in drinking water through: Contamination of the source water system. Copper is rarely found in source water, but copper mining and smelting operations and municipal incineration may be sources of contamination. Corrosion of copper plumbing. Corrosion of plumbing is by far the greatest cause for concern, because all water is corrosive toward copper to some degree, even water termed noncorrosive or water treated to make it less corrosive. Corrosivity toward copper is greatest in very acidic water. Many of the other factors that affect the corrosivity of water towards copper can also be expected to affect the corrosion of lead. (more info)

    5. Drinking Water Quality - Lead and Copper 5 How Does Lead Get Into Your Drinking Water? Lead is rarely found in source water, but enters drinking water through the corrosion of plumbing materials, like copper. Homes built before 1986 are more likely to have lead pipes, fixtures and solder. New homes are also at risk: even legally “lead-free” plumbing may contain up to 8 % lead.

    6. Drinking Water Quality - Lead and Copper 6 What Are the Action Levels for Lead and Copper The LCR requires that drinking water, utility services monitor drinking water at customer taps. If lead concentrations exceed an action level of 15 parts per billion (ppb), also referred to as micrograms per liter of water, or … If copper concentrations exceed an action level of 1,300 ppb in more than 10% of customer taps sampled… An exceedance is not a violation, but can trigger other requirements water quality parameter monitoring, including: corrosion control treatment source water monitoring/treatment public education lead service line replacement

    7. Drinking Water Quality - Lead and Copper 7 How Does Water Become Corrosive? Water is naturally corrosive with a slightly acidic pH (i.e., less than pH 7). Chorine is often used as a water disinfectant to kill germs; however, chlorine itself may have some affect on health. Therefore, many water treatment plants have been switching to other disinfectants (e.g., chloramines), with less affects to health, yet still capable of killing germs. While trying to improve on the chemical used to disinfect water; many treatment systems unknowingly created an increase in lead, because chloramines increased corrosivity.

    8. Drinking Water Quality - Lead and Copper 8 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    9. Drinking Water Quality - Lead and Copper 9 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    10. Drinking Water Quality - Lead and Copper 10 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    11. Drinking Water Quality - Lead and Copper 11 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    12. Drinking Water Quality - Lead and Copper 12 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    13. Drinking Water Quality - Lead and Copper 13 How Does MCB, Quantico Reduce Lead and Copper ? need to add picsneed to add pics

    14. Drinking Water Quality - Lead and Copper 14 Extra Steps You Can Take To Reduce Lead and Copper in Drinking Water If the water is going to be used as drinking water, let it run from the faucet as cool water for 15 to 30 seconds before putting it into your glass, cooking pot, etc., for consumption. Do not cook or drink water from the hot water tap. Hot water can dissolve metals in piping more quickly than cold water. Filter your drinking water. Many types of water filters are available that reduce lead concentrations (e.g., water softeners, filter pitchers, faucet filters and even filters that go into water dispensers on refrigerators) To help block the storage of lead in your child’s body, serve your family meals that are low in fat and high in calcium and iron, including dairy products and green vegetables.

    15. Drinking Water Quality - Lead and Copper 15 Conclusion Questions? Contact NREA at (703) 784-4030 or Utilities at (703) 432-0698

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