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How do the different parts of particulate matter (PM) fit together?
The various parts of PM in the NEI are related as follows. PM10-FIL > PM25-FIL because PM10-FIL includes PM25-FIL PM25-PRI = PM25-FIL + PM-CON This equation only applies at the process level. Because some sources only can report PM2.5 (due to test method differences), this equation does not apply to…
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How does PM2.5 relate to PM species such as EC, OC, SO4, NO3, PMFINE, and DIESEL-PM25?
Primary PM2.5 estimates are speciated into the five PM species in the NEI: elemental (black) carbon (EC), organic carbon (OC), nitrate (NO3), sulfate (SO4), and the remainder of PM25-PRI (PMFINE). Diesel engine PM25-PRI and PM10 emissions are also labeled as DIESEL-PM25 and DIESEL-PM10 for mobile source diesel engines. For all…
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Does the Fee Rule for Abatement and RRP Programs apply nationwide?
Answer: The rule applies only in those states and tribes without their own authorized lead programs. Currently, EPA implements the Lead-based Paint Activities program in 11 states and the Lead Renovation, Repair, and Painting Rule in 36 states. Question Number: 23002-33305 Find a printable PDF copy of all frequent questions…
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How does the Safe Drinking Water Act limit lead in pipes, plumbing fittings, fixtures, faucets, solder and flux?
Answer: Section 1417 of the Safe Drinking Water Act (SDWA) establishes the definition for “lead free” as a weighted average of 0.25% lead calculated across the wetted surfaces of a pipe, pipe fitting, plumbing fitting, and fixture and 0.2% lead for solder and flux. The Act also provides a methodology…
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Is exposure to lead contaminated drinking water from absorption through skin a health threat?
Answer: Human skin does not absorb lead in water. For more information visit our website: https://www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water . Question (23002-32377) Find a printable PDF copy of all frequent questions pertaining to lead .
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Are non-transient, non-community water systems (NTNCWSs) required to monitor for lead and copper?
Answer: All community water systems (CWSs) and NTNCWSs must collect lead and copper tap samples. The frequency of the monitoring and number of samples to be collected and analyzed is based primarily on the number of people served and tap water monitoring results. For an outline of monitoring requirements (e.g…
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Is there anything else I can do beyond flushing my tap or buying bottled water?
Answer: Yes, find “Important Steps You Can Take to Reduce Lead in Drinking Water” if you are concerned about lead in their drinking water. The list is not intended to be exhaustive or to imply that all actions equally reduce lead from drinking water. EPA recommends you also contact your…
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My neighbors got their water tested and found lead. Is my water safe?
Answer: Lead usually gets into drinking water through contact with plumbing materials such as lead pipes or lead solder, or faucets, valves, and fixtures made of brass (brass contains some lead). Since each home has different plumbing pipes and materials, test results are likely to be different for each home…
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Can one still sell lead solder under the Lead Ban?
Answer: Section 1417(a)(3) of the Safe Drinking Water Act (SDWA) prohibits the sale of solder and flux that is not lead-free unless the solder or flux bears a prominent label stating that it is illegal to use the solder or flux in the installation or repair of any plumbing providing…
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Why do water systems add phosphate to drinking water? What are the health effects of drinking water containing phosphates?
Answer: Public water systems (PWSs) commonly add phosphates to drinking water to prevent the release of metals in drinking water. Orthophosphate is most commonly used for lead and copper control. Polyphosphates sequester iron and manganese to prevent discolored water but are not effective to control lead and copper. Blended phosphates…
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Who is affected by the Fee Rule for Lead Abatement and Renovation, Repair and Painting (RRP) Programs?
The Fee Rule for Lead Abatement and RRP Programs establishes fees that will be charged for training programs seeking accreditation, for firms engaged in renovations seeking certification and for individuals (for example, risk assessors) or firms engaged in lead-based paint activities that govern lead abatement, inspection and risk assessment activities…
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Read frequent questions on lead in drinking water
Read frequent questions on lead in drinking water . Find a printable PDF copy of all frequent questions pertaining to lead .
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What are the public education requirements for non-transient, non-community water systems (NTNCWSs) that have exceeded the lead action level?
Answer: When there is a lead action level exceedance, non-transient, non-community water systems (NTNCWSs) must post informational posters on lead in drinking water in public places or common areas in buildings they serve. NTNCWSs must also distribute informational pamphlets and/or brochures on lead in drinking water to each person they…
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How can lead get into my drinking water?
Answer: Lead can enter drinking water when plumbing materials that contain lead corrode, especially where the water has high acidity or low mineral content that corrodes pipes and fixtures. The most common sources of lead in drinking water are lead pipes, faucets, and fixtures. In homes with lead pipes that…
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Does boiling water remove lead?
Answer: No, boiling water does not remove lead. Question (23002-32378) Find a printable PDF copy of all frequent questions pertaining to lead .
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