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Displaying 46 - 58 of 58 results
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I am looking at a water report for my public water system. Under the contaminant heading for lead and copper there is a column heading titled 90th percentile. What does this column mean?
Answer: The Consumer Confidence Report must include the 90 th percentile concentration of the most recent round(s) of sampling for lead and copper. If the “90 th percentile” level is above the action level, this is called an action level exceedance. The action level is the concentration of a contaminant…
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The drinking water I receive from a public water system has an unfamiliar odor and a slight discoloration. I am concerned that this is an indication of lead in my drinking water. What can I do to determine if lead is in my drinking water?
Answer: You cannot see, taste, or smell lead in drinking water. To determine if lead is in your drinking water, contact your local water supplier and ask for a copy of your Consumer Confidence Report. This report lists the levels of contaminants that have been detected in the water, including…
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What is the water system doing about lead in drinking water?
Answer: In accordance with the Lead and Copper Rule, your water system is required to test water collected from a number of households in your community for levels of lead and copper. Depending upon the number of people served by your water system and the levels of lead and copper…
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Is there a guidance document that outlines sampling techniques for testing lead in public drinking water systems?
Answer: Sampling techniques for testing lead in drinking water are outlined in EPA's approved methods for compliance monitoring of lead in drinking water. In addition, EPA has several guidance documents associated with Lead and Copper Rule water quality and tap monitoring on our website here: https://www.epa.gov/dwreginfo/lead-and-copper-rule-implementation-tools#WQ . This guidance does…
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A water system is on reduced monitoring for lead and copper. If this system adds new or revised treatment, must the system resume lead and copper sampling as a new system?
Answer: The state may require a system to resume sampling and collect the number of samples specified for standard monitoring or take other appropriate steps such as increased water quality parameter monitoring or re-evaluation of its corrosion control treatment (40 CFR 141.86(d)(4)(vii)). Question (23002-32405) Find a printable PDF copy of…
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