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Water: Basic Information about Regulated Drinking Water Contaminants You are here: Water Drinking Water Drinking Water Contaminants Basic Information about Asbestos Pipe Regulated Drinking Water Contaminants Basic Information about Asbestos in Drinking Water Basic Information about Asbestos in Drinking Water  

Drinking Water Contaminants Home Basic Information about Drinking Water Contaminants Asbestos at a Glance Maximum Contaminant Level (MCL) = 7 million fibers per Liter (MFL) Maximum Contaminant Level Goal (MCLG) = 7 MFL 

Health Effects Some people who drink water containing Asbestos in excess of the MCL over many years may have an increased risk of Asbestos Pipe developing benign intestinal polyps. Drinking Water Health Advisories provide more information on health effects Chemical Abstract Service Registry Number 1332-21-4 

Sources of Contamination Decay of Asbestos cement in water mains; Asbestos Pipe erosion of natural deposits List of all Regulated Contaminants (PDF) (6 pp, 396 K, About PDF) EPA regulates Asbestos in drinking water to protect public health. 

Asbestos may cause health problems if present in public or private water supplies in amounts greater Asbestos Pipe than the drinking water standard set by EPA. What is Asbestos? Uses for Asbestos. What are Asbestos' health effects? What are EPA's drinking water regulations for Asbestos? 

How does Asbestos get into my drinking water? How will I know if Asbestos is in my drinking water? How will Asbestos be Asbestos Pipe removed from my drinking water? How do I learn more about my drinking water? What is Asbestos? Asbestos is a fibrous mineral occurring in natural deposits. Uses for Asbestos. 

Because Asbestos fibers are resistant to heat and most chemicals, they have been mined for use in more than 3,000 products, including roofing materials, brake pads, and Asbestos Pipe cement pipe often used in distributing water to communities. If you are concerned about Asbestos in a private well, please visit:  

EPA's private drinking water wells website Water Systems Council website What are Asbestos' health effects? Some people who drink water containing Asbestos well in excess of the maximum Asbestos Pipe contaminant level (MCL) for many years may have an increased risk of developing benign intestinal polyps. 

This health effects language is not intended to catalog all possible health effects for Asbestos. Rather, Asbestos Pipe it is intended to inform consumers of some of the possible health effects associated with Asbestos in drinking water when the rule was finalized. What are EPA's drinking water regulations for Asbestos? 

In 1974, Congress passed the Safe Drinking Water Act. This Asbestos Pipe law requires EPA to determine the level of contaminants in drinking water at which no adverse health effects are likely to occur. 

These non-enforceable health goals, based solely on possible health risks and Asbestos Pipe exposure over a lifetime with an adequate margin of safety, are called maximum contaminant level goals (MCLG). Contaminants are any physical, chemical, biological or radiological substances or matter in water. The MCLG for Asbestos is 7 MFL. 

EPA has set this level of protection based on the best available science to prevent potential health problems. EPA has set an enforceable regulation for Asbestos, Asbestos Pipe called a maximum contaminant level (MCL), at 7 MFL. 

MCLsare set as close to the health goals as possible, considering cost, benefits and Asbestos Pipe the ability of public water systems to detect and remove contaminants using suitable treatment technologies. In this case, the MCL equals the MCLG, because analytical methods or treatment technology do not pose any limitation. 

The Phase II Rule, the regulation for Asbestos, became effective in Asbestos Pipe 1992. The Safe Drinking Water Act requires EPA to periodically review the national primary drinking water regulation for each contaminant and revise the regulation, if appropriate. 

EPA reviewed Asbestos as part of the Six Year Review and determined that the 7 MFL MCLG and 7 MFL MCL for Asbestos are still Asbestos Pipe protective of human health. More information on the Six Year Review of Drinking Water Standards. States may set more stringent drinking water MCLGs and MCLs for Asbestos than EPA.  

How does Asbestos get into my drinking water? The major sources of Asbestos in drinking water are decay of Asbestos cement water mains; and Asbestos Pipe erosion of natural deposits. 

A federal law called the Emergency Planning and Community Right to Know Act (EPCRA) requires facilities in certain industries, which manufacture, process, or use significant amounts of toxic chemicals, Asbestos Pipe to report annually on their releases of these chemicals. 

For more information on the uses and releases of chemicals in your state, contact the Community Right-to-Know Hotline: (800) 424-9346. EPA's Toxics Release Inventory (TRI) website provides information about the types and amounts of toxic chemicals that are released each year to the air, water, and Asbestos Pipe land.  

How will I know if Asbestos is in my drinking water? When routine monitoring indicates that Asbestos levels are above the MCL, your water supplier must take steps to reduce the amount of Asbestos so that it is below that level. Water suppliers must notify their customers as soon as practical, Asbestos Pipe but no later than 30 days after the system learns of the violation. 

Additional actions, such as providing alternative drinking water supplies, may be required to prevent serious risks to public health. See EPA's public notification requirements for public water systems. If your water comes from a household well, Asbestos Pipe check with your health department or local water systems that use ground water for information on contaminants of concern in your area. 

For more information on wells, go to EPA's website on private wells. Top of page How will Asbestos be removed from my drinking water? The following treatment method(s) have proven to be effective for removing Asbestos to below 7 MFL: coagulation/filtration, direct and Asbestos Pipe diatomite filtration, and corrosion control.  

How do I learn more about my drinking water? EPA strongly encourages people to learn more about their drinking water, and Asbestos Pipe to support local efforts to protect the supply of safe drinking water and upgrade the community water system. Your water bill or telephone book's government listings are a good starting point for local information. Contact your water utility. 

EPA requires all community water systems to prepare and deliver an annual consumer confidence report (CCR) (sometimes called a water quality report) for their customers by July 1 of each year. If your water provider is not a community water system, or Asbestos Pipe if you have a private water supply, request a copy from a nearby community water system.

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