";s:4:"text";s:28142:"(The detection level for arsenic is usually 2 µg/L.) Arsenic enters groundwater through natural mineral deposits and mining activities, as well as from petroleum refining, wood preservatives and herbicides. The state recommends that all household wells be tested for arsenic. The Department of Health recommends that water used for drinking, cooking, and preparing beverages such as coffee and tea contain no more than 10 ppb arsenic. reports that an estimated 2.1 million people across the United States may be drinking water from wells that have arsenic concentrations above the EPA limit (shown in the map above). Maine. In 2001, the Environmental Protection Agency lowered the drinking-water standard from 50 parts per billion of arsenic to 10 parts per billion. Check with a water system designer to learn more about arsenic levels in well water. Arsenic enters groundwater through natural mineral deposits and mining activities, as well as from petroleum refining, wood preservatives and herbicides. A study by the U.S. Geological Survey reports that an estimated 2.1 million people across the United States may be drinking water from wells that have arsenic concentrations above the EPA limit (shown in the map above). Because the majority of residents in rural parts of Arizona get their drinking water from unregulated, private water wells, the Office of Environmental Health recommends that water from all new drinking wells be tested prior to use for cooking or drinking to mitigate arsenic poisoning. Small concentrations of arsenic occur naturally in nearly all rocks in the aquifer (Mosier, 1998), but only some areas show elevated concentrations (greater than 10 µg/L) in the water of the aquifer ().Concentrations as great as 232 µg/L have been measured in the confined part of the aquifer in Norman (figs. Some parts of Illinois have minerals with naturally high levels of arsenic that deposit into … The research, undertaken in cooperation with the Connecticut Department of Public Health, projects that approximately 3.9% of private wells across Connecticut contain water with arsenic at concentrations higher than the U.S. Environmental Protection Agency’s maximum contaminant level for public drinking-water … Because the majority of residents in rural parts of Arizona get their drinking water from unregulated, private water wells, the Office of Environmental Health recommends that water from all new drinking wells be tested prior to use for cooking or drinking to mitigate arsenic poisoning. Drinking Water Arsenic Rule History. Arsenic in water has no taste or odor. California. There is no required sampling of private drinking water wells. If you water contains more than 50 ppb of arsenic, we recommend you stop using it immediately. , Kern, Los Angeles and San Bernardino counties have the most active and standby public water wells with arsenic concentrations above 10 ppb in the state. Once released, arsenic remains in the environment for a long time. arsenic concentrations in their source water above the revised arsenic MCL of 0.010 mg/L. Some parts of Illinois have minerals with naturally high levels of arsenic that deposit into groundwater. About 10 percent of Minnesota’s private wells have arsenic levels higher than 10 µg/L. July 25, 2014 at 11:30 am ET. Arsenic gets into well water through natural erosion. Water well owners who want to test their well water for arsenic must … The MCL for arsenic is 10 micrograms per liter (µg/L). Drinking water standards are set at very low levels. Additionally, nearly 10% of all water wells tested in the GAMA Program’s study had high arsenic concentrations. Arsenic has a primary drinking water standard or MCL (maximum contaminant level) because it is known to cause health effects when present in drinking water. The state recommends that all household wells be tested for arsenic. However, levels from 10 ppb to 33,000 ppb have been found in some wells in Washington. According to information from the Maine Center for Disease Control & Prevention, approximately 1 in 10 drilled wells in Maine have water with high levels of arsenic. In addition, there were counties in which half of the groundwater samples from private wells had high arsenic concentrations. Water systems had to meet the new standard by January 23, 2006. As a result, some private water wells in Georgia may exceed the federal regulatory standard for arsenic in public water supplies. , approximately 1 in 10 drilled wells in Maine have water with high levels of arsenic. For private residential wells, there is no state or federal requirement that you stop using your water, regardless of the arsenic level. The agency had initially proposed a limit of five parts per billion but faced criticism that it would be too costly for water companies to hit that target. Drinking water in Washington typically contains less than 3 parts of arsenic per billion parts of water (often abbreviated as 3 ppb). What is the standard for arsenic in drinking water? 5 States with High Levels of Arsenic in Groundwater. In 2001, EPA reduced the regulatory MCL from 50 ppb to 10 ppb on the basis of bladder and lung cancer risks. In high levels, arsenic can cause toxicity, liver and kidney damage, and even cancer. 5. * However, drinking water with arsenic at levels lower than the EPA standard over many years can still increase your risk of cancer. If your well water does contain elevated levels of arsenic, there are treatment devices available, such as reverse osmosis systems, which have been shown to be effective in lowering arsenic levels. The Arizona Department of Health Services maintains that arsenic is present in almost all of the state’s groundwater. Arsenic is also one of the most common contaminants found in Nevada’s well water. Canada has always been an active proponent of environmental sustainability. On January 22, 2001, EPA adopted a new standard for arsenic in drinking water of 0.01 mg/l or 10 parts per billion (ppb), replacing the old standard of 50 ppb. drinking water problems, the state still has 13 school districts, serving a total of 8,822 students, with arsenic in their drinking water that exceeded the federal limit from 2011 to 2015. The company’s 2016 water quality report listed its average arsenic level at 9 ppb, but records show that on Dec. 15 of that year, Starkey issued a recall after 11.7 ppb of arsenic … In addition, the states of Texas and Minnesota provided data gathered on arsenic in private wells. The Environmental Protection Agency (EPA) federal drinking water standard for arsenic in drinking water is 10 micrograms per liter (µg/L). Published — Is this U.S. coal giant funding violent union intimidation in Colombia. Arsenic is removed from the air by rain, snow, and gradual settling. As a … In 2001, the U.S. Environmental Protection Agency (EPA) set a maximum contaminant level of 10 ppb for arsenic in all potable water. In the U.S., high concentrations of naturally occurring arsenic are more common in the West, Midwest, parts of Texas, and Northeast, but can occur almost anywhere. How can arsenic affect my health? In several other states, few readings were available. According to, data from the State Water Resources Control Board Division of Water Quality GAMA Program. For comparison, 3 ppb is about equal to adding one teaspoon of arsenic to an acre of water that is 4 feet deep. Introduction. Arsenic is also one of the most common contaminants found in Nevada’s well water. Arsenic is in groundwater throughout the state, but it is more likely in some areas. In addition, there were counties in which half of the groundwater samples from private wells had high arsenic concentrations. • Over 6% of CWSs in many western states, Michigan, and some New England states have mean arsenic concentrations above the revised MCL. This is true for many areas in the following 5 states: Arsenic is commonly found in California’s groundwater, primarily due to natural sources. 2. Prior to the enforcement of the 10 ppb EPA standard, 11% of the community water well water samples in the Illinois State Water Survey (ISWS) Water Quality Database had arsenic levels above 10 ppb. Recent research has found an association between arsenic below 10 parts per billion and IQ deficits in children. 3. The Arizona Department of Health Services maintains that arsenic is present in almost all of the state’s groundwater. Arsenic is known to cause a variety of cancers as well as being linked to heart disease, strokes and diabetes. Arsenic is an element that occurs naturally in rocks and soil. 9 Twelve mobile home parks in California, serving 889 people, had arsenic in their tap water … Elevated levels of arsenic can be found naturally in groundwater in some areas of Illinois. Once on the ground or in surface water, arsenic can slowly enter ground water. a variety of cancers as well as being linked to heart disease, strokes and diabetes, National Academy of Sciences agrees with EPA that formaldehyde causes cancer. • The darker shades show a higher percentage of systems with levels of arsenic in their source water. Arsenic makes up part of the Earth’s crust and is commonly found in groundwater. Maine, New Hampshire, Arizona and several other states are particularly prone to high arsenic levels because of the bedrocks. Arizona. Updated — 4. information from the Maine Center for Disease Control & Prevention. (function() {document.getElementById('arsenic_map').innerHTML = ''})(); Alabama-based Drummond Co. sued for alleged ties to group behind deaths, threats. The research, undertaken in cooperation with the Connecticut Department of Public Health, projects that approximately 3.9% of private wells across the state contain water with arsenic at concentrations higher than the U.S. Environmental Protection Agency’s maximum contaminant level for public drinking-water supplies. Levels … Illinois. Drinking water in … June 28, 2014 Arsenic is a chemical element that enters the environment from mineral deposits, industrial activity, pesticides and the smelting of metals. High arsenic levels in private wells may come from certain arsenic containing fertilizers used in the past or industrial waste. Some parts of Illinois have minerals with naturally high levels of arsenic that deposit into groundwater. However, drinking water with arsenic at levels lower than the EPA standard over many years can still increase your risk of cancer. In 1975, the U.S. Environmental Protection Agency set a MCL for arsenic … Since the standard went into effect in 2006, however, some states have had trouble with compliance because their groundwater has high arsenic concentrations. According to data from the State Water Resources Control Board Division of Water Quality GAMA Program, Kern, Los Angeles and San Bernardino counties have the most active and standby public water wells with arsenic concentrations above 10 ppb in the state. Arsenic occurs in The federal drinking water standard for arsenic is 10 parts per billion. Arsenic in Minnesota Water. Although water from drilled wells more commonly have high arsenic concentrations, water with high levels of arsenic can be found throughout the state—even in some dug wells. Keep up-to-date with our latest news, developments in the water treatment industry, and some general fun. The Florida Department of Environmental Protection drinking water standard for arsenic is 10 micrograms per liter (10 ug/L). Private well owners are not required to have their wells tested for arsenic. Prior to the enforcement of the 10 ppb EPA standard, 11% of the community water well water samples in the Illinois State Water Survey (ISWS) Water Quality Database had arsenic levels above 10 ppb. Illinois. If your water has arsenic levels above 10 ppb, you should get drinking water from another source or install a home treatment device. Arsenic in groundwater also may be the result of contamination caused by hazardous waste or industries that make or use arsenic. The Environmental Protection Agency (EPA) has established a standard for arsenic in drinking water at 10 ppb (micrograms per liter, µg/L). This map shows the areas of the US which are more likely to have well water with arsenic levels of 10 micrograms or more. Drinking water every day at or below the Drinking Water Standard. In ground water, arsenic can combine with other elements to form inorganic as well as organic Arsenic is a metal-like substance found in small amounts in nature. Arsenic from soil and rock can dissolve into groundwater and enter drinking water wells. These data, based on sampling conducted by the Illinois Environmental Protection Agency (IEPA), indicate that arsenic is prevalent in groundwater in many parts of the state. Arsenic occurs naturally in soil and rock. At the end of 2020, the Wisconsin Department of Natural Resources (WDNR) directed the public works director of Grantsburg, Wisconsin, a small villa. Water consumption varies by such factors as climate and level of physical activity. Prior studies have established that approximately 10 percent of domestic wells in Maine have arsenic levels greater than the U.S. Environmental Protection Agency maximum contaminant limit (10 micrograms per liter (ug/L)). For the community water supply data included in the Illinois State Water Survey (ISWS) Water Quality Database, which are of well water samples taken prior to treatment, 2.1 percent of the samples had arsenic levels of 50 µg/L or … Our mission is to protect democracy and inspire change using investigative reporting that exposes betrayals of the public trust by powerful interests. The only way to know if your well contains arsenic is to have it tested. Arsenic has been detected in about 40 percent of new wells drilled since 2008 in Minnesota. In 2001, the Environmental Protection Agency lowered the drinking-water standard from 50 parts per billion of arsenic to 10 parts per billion. https://www.usgs.gov/news/study-estimates-about-21-million-people-using-wells-high-arsenic, https://water.usgs.gov/nawqa/trace/pubs/geo_v46n11/fig3.html, https://water.usgs.gov/edu/groundwater-contaminants.html, https://www.waterboards.ca.gov/water_issues/programs/gama/docs/coc_arsenic.pdf, https://ndep.nv.gov/uploads/water-labcert-dwtesting-docs/common_probs.pdf, https://azdhs.gov/documents/preparedness/epidemiology-disease-control/environmental-toxicology/about-arsenic-groundwater.pdf, http://www.epa.state.il.us/water/groundwater/publications/arsenic/, http://www.dph.illinois.gov/topics-services/environmental-health-protection/private-water/arsenic-groundwater, https://www.maine.gov/dhhs/mecdc/public-health-systems/health-and-environmental-testing/arsenic.htm, AdVantEdge Residential Treatment Solutions, How Canada Regulates Manganese in Drinking Water, 5 Ways to Remove Manganese from Drinking Water. Additionally, nearly 10% of all water wells tested in the GAMA Program’s study had high arsenic concentrations. Arsenic makes up part of the Earth’s crust and is commonly found in groundwater. There’s Something in the Water – Water Quality Issues in the U.S. This is true for many areas in the following 5 states: 1. All community water systems test for arsenic and ensure levels meet the Environmental Protection Agency drinking water standard, or Maximum Contaminant Level (MCL). Nevada. Arsenic in Drinking Water: MCL Status. Arsenic is a natural component of the earth’s crust and is widely distributed throughout the environment in the air, water and land. Parts of Midwest, New England, and Texas have some systems whose current arsenic levels are greater than 10 µg/L (or ppb). Although water from drilled wells more commonly have high arsenic concentrations, water with high levels of arsenic can be found throughout the state—even in some dug wells. Existing treatment systems that can be used for arsenic reduction include reverse osmosis, distillation, adsorption, and (anion) ion exchange. Figure 1: US Geological Survey Map of Arsenic in Groundwater (USGS, 2005). What are the Health Effects of Arsenic? Arsenic is commonly found in California’s groundwater, primarily due to natural sources. The water crisis in Flint, Michigan, showcased the dangers of exposure to drinking water contaminated with high levels of lead. When underground water flows over rocks and soil that contain arsenic, the arsenic slowly dissolves into the water. Long term exposure to drinking water containing arsenic at levels higher than 10 ppb increases the chances of getting cancer; for lower levels the chances are less. This map is based on arsenic readings from 45,000 wells collected by the United States Geological Survey throughout the country going back four decades. Estimated population with arsenic greater than 10 micrograms per liter. Public health concerns about arsenic in drinking water related to its potential to cause adverse health effects are addressed through the adoption of state and federal drinking water standards, also called maximum contaminant level (MCLs) Exposure to arsenic in drinking water depends upon the concentration of arsenic in the drinking water and the amount of water consumed by the individual. factors including the level of arsenic in the water, desired level of arse-nic removal from the water, the quantity of water to be treated, and the chemistry of the water. Since the standard went into effect in 2006, however, some states have had trouble with compliance because their groundwater has high arsenic concentrations. Polk County. Inorganic arsenic is typically present in higher levels in groundwater than the recommended drinking water standard in many states in the US. 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