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radon in well water ontario

Some public water systems treat their water to reduce radon levels before it is delivered to your home. Showers and sprays are a prime release method and the greater the water usage, the greater the potential radon problem. Radon is found in groundwater in areas that have high levels of uranium in the underlying rocks, such as granites and shales. It can also be present in well water, where it can be released every time you turn on a tap or run the shower. The EPA is proposing that radon levels in drinking water from public systems be below 300 pCi/L, or alternatively below 4000 pCi/L if a multimedia mitigation plan for indoor air is developed by the state. It is a very wise idea to have the air of your home checked for high levels of radon gas. Radon is a colorless, tasteless, odorless, radioactive gas. Breathing in radon gas for extended periods of time can potentially be hazardous to you and … While most radon-related deaths are due to radon gas accumulated in houses from seepage through cracks in the foundation, 30 to 1,800 deaths per year are attributed to radon from household water. Radon usually does not occur in significant concentrations in surface waters.Dissolved radon in groundwater will escape into indoor air during showering, laundering, and dishwashing. What are the health effects of radon? If you are an owner or operator of a large drinking water system under Ontario regulation 170/03 and need more information, contact the Ministry of Environment, Conservation and Parks. Nor do they know that radon is not part of a standard well water test. Currently there is no federally enforced drinking water standard for radon. Radon gas can seep in through foundation cracks, exhaust pipes and even well water. Any building may have a radon problem. Types of Systems - GAC & Aeration. Sometimes radon enters the home through well water. The Environmental Protection Agency (EPA) estimates that radon causes some 21,000 lung cancer deaths a year in the U.S. alone. Testing Your Well Water In the open air, radon poses limited health risks, as radon escaping from the soil is diluted in the open air. Water quality can vary greatly based upon natural fluctuations in the water source and the types of treatment techniques utilized by the water department. Exposure can take place when taking a shower, doing laundry, or washing dishes. Granular activated carbon: This technology will remove 95 percent of the waterborne radon. A water well system professional can determine whether your well can be retrofitted to draw from zones in which the water contains radon at levels consistently below the proposed U.S. EPA standard. It can be found in all 50 states. Aquifers that have a more heterogeneous mixture of materials, such as sandstone or sand and gravel, typically do not have high radon concentrations or large fluctuation in radon concentrations. A greater level of success—as much as 99 percent removal—can be achieved when selecting a unit that utilizes a mister or nozzle located at the top of the tank to fill the tank along with a bubbler. Radon is found across Canada because it occurs naturally in soil. For more information about radon illness and treatment, please visit CDC-ATSDR’s radon page. If the water comes from a ground water source, call your water system and ask if they've tested the water for radon. The Canadian Radon Guideline from Health Canada recommends the level of radon in the air of a home be no more than 200 Becquerels per cubic metre (Bq/m 3) per year. Nor do they know that radon is not part of a standard well water test. Health Canada recognizes radon as the next … It is formed by the natural radioactive decay of uranium in rock, soil, and water. CDC twenty four seven. Exposure to these hazards can be short- or long-term and can occur at home, school, work and in the community. It works by adsorbing the radon onto the surface of activated carbon. Call the Safe Drinking Water Hotline (1-800-426-4791) which can provide phone numbers for your State laboratory certification office. Radon levels in well water can be significant depending on the source, but very high levels would be required to impact indoor radon levels by an appreciable amount. Types of Systems - GAC & Aeration. Estimat… Radon in well water can contribute to the indoor air levels of radon gas in your home by releasing radon into the air as water flows into sinks, tubs, and appliances. Point-of-use devices, such as those installed on a tap or under the sink, treat only a small portion of the water in the home and are not as effective in reducing radon; radioactivity also can build up on the filters of these devices and become a hazard. Although the granular activated carbon system has few moving parts and should have a long, useful life, radon build up over long periods of time becomes a low-level radioactive source requiring special disposal. Just as uranium is present in all rocks and soils, so are radium and radon, due to radioactive decay. We only install Aeration Systems. We only install Aeration Systems. Radon gas comes primarily from the ground and seeps into your home undetected. We can do the test for your or you can pick up a radon test kit at your local UGA extension office. Well water can also contain trapped radon, which may be released into the air when water is drawn. See Tables 1 & 2, pages 12 &13, of the EXP document wintersbay-water-tests7-exp , for the lake surface water analysis results, (page 12&13) It can also dissolve into our water supply. Drinking water testing should be done by a certified drinking water testing laboratory. As the air bubbles rise through the water, they strip radon and carry it out of the top of the tank and through a vent pipe to above the roof line. High levels of dissolved radon are found in the groundwater in some areas flowing through granite or granitic sand and gravel formations. Remember to have your well water tested regularly, at least once a year, after installing a treatment system to make sure the problem is controlled. Radon in soil under homes is the biggest source of radon in indoor air, and presents a greater risk of lung cancer than radon in drinking water. A radon-in-water test can be conducted to determine the extent of radon contamination in the well water. It is possible to have water tested for radon; however special collection vials are required. These wells could be private water wells or wells that are utilized by a public water supply system. There the radon continues to decay and give off radiation; however, the treatment equipment is usually not located in the living area of the home. It occurs naturally and is produced by the breakdown of uranium in soil, rock, and water. Given that radon is a naturally produced substance in groundwater and not the result of human activities, there is no water well construction method that will prevent it from being in groundwater. Think about why you’re considering a filter, Step 3. Health Canada has identified exposure to radon gas as the second leading cause of lung cancer after smoking, est… If you suspect a problem and your drinking water comes from a private well, you may contact your state certification officerexternal icon for a list of laboratories in your area that will perform tests on drinking water for a fee. Testing for it is the only way of telling how much is present. To receive updates highlighting our recent work to prevent infectious disease, enter your email address: Centers for Disease Control and Prevention. Zone 1 – High Zone 2 – Elevated Zone 3 – Guarded Relative Radon Hazard* GAC treatment – filtering water through granular activated carbon. If you live in an area with high radon in groundwater it can get into your private well. Radon (1) In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m 3 of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working levels … “Old” water will have a lower radon concentration due to radon’s half-life of approximately 3.6 days. This is most commonly accomplished with an air diffuser mounted at the bottom of a storage tank filled with water to be treated. It is invisible, odourless and tasteless. There are primarily two types of well water systems, Granular Activated Carbon (GAC) and Aeration Systems. The two most common treatment technologies are granular activated carbon and aeration: WellOwner.org is supported by the Rural Community Assistance Partnership (, Copyright © 2021 Wellowner.org - Water Well Resources and Water Well Service Directory. Disposing of the carbon may require special handling if it is used at a high radon level or if it has been used for a long time. Persons who live in areas that have high levels of uranium in the underlying rocks, such as granites and shales, may be at greater risk. Radon can be removed from water by using one of two methods: In either treatment, it is important to treat the water where it enters your home (point-of-entry device) so that all the water will be treated. Radon in your home's water is not usually a problem when its source is surface water. Call Nelson Water at 888.326.7082 for water treatment solutions to address hardness, taste/odor, pharmaceuticals and lead removal as well as sulfur, iron, sulfur bacteria, tannins, chlorine, chloramines, fluoride, toxic chemicals, uranium and radon in Ottawa, Kanata, Nepean, Gloucester, Stittsville, Chelsea, Alymer and Gatineau Ontario. There are primarily two types of well water systems, Granular Activated Carbon (GAC) and Aeration Systems. Radon is a colorless, odorless gas produced by the radioactive decay of the element radium, which has itself been formed by the decay of uranium. Concern about radon, due to radioactive decay of uranium in rock, and laundering can the... Small number of buildings, well-sealed and draughty buildings, well-sealed and draughty buildings, the greater the is. Radon-222 and uranium in rock, soil, and chemically inert radioactive gas that comes from the to. Due to radioactive decay by the water is exposed to air the radon is not a concern about radon and... To prevent infectious Disease, enter your email address: Centers for Control. Represents a much larger risk ground and seeps into your private well live in an with! Draughty buildings, and water adsorbing the radon is a very wise to! Water ), the water source and the types of well water into your home disposal of radioactivity up! 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