From nadege.dubuisson at state.or.us Thu Feb 5 16:46:05 2015 From: nadege.dubuisson at state.or.us (Dubuisson Nadege) Date: Fri, 6 Feb 2015 00:46:05 +0000 Subject: [Oregon_dwsp] FW: Research Brief 242: Assessing and Reducing Health Risks from Arsenic in Private Well Water In-Reply-To: References: <450834870.1808.1423074056397.JavaMail.ehs-cf9prd1@mailfwd.nih.gov> Message-ID: A good read for all. Even when people have their results, many do not take any action to reduce exposure. Experiencing difficulty viewing this email? Please refer to the online version. [Click here for printer friendly version of this Research Brief] [SRP Research Brief] Research Brief 242: Assessing and Reducing Health Risks from Arsenic in Private Well Water We are at a crossroads when it comes to reducing the risk of adverse health outcomes from arsenic in private well water in the United States, according to Yan Zheng, Ph.D., professor at the City University of New York and community engagement leader at the Columbia University Superfund Research Program (CU SRP), and Joseph Ayotte, P.G., a U.S. Geological Survey hydrologist. To address this issue, Zheng and Ayotte wrote a summary paper and co-edited a special section on arsenic for the Science of the Total Environment (STOTEN) journal. They claim we have a better understanding of factors influencing arsenic occurrence in well water and its health effects, but little knowledge about what actions households with private wells have taken to reduce arsenic exposure and the reasons for taking those actions.[Photo of water test showing high levels of arsenic.] For the 43 million people in the U.S. using private wells, testing the water to ensure the safety of their drinking water is the responsibility of the well owner. This is a public health concern because arsenic is widespread in the groundwater of several regions, including New England. Arsenic in drinking water has been linked to a variety of adverse health outcomes, including cardiovascular disease, child development impairment, diabetes, and skin, bladder, and lung cancers. A study in Maine by CU SRP, for example, found exposure to arsenic via well water consumption harms children's IQ.1 The summary paper by Zheng and Ayotte is the first in a collection of 13 papers in the STOTEN special section that provide state-of-the-art information on arsenic hydrogeochemistry, effectiveness of household well treatment systems, and the testing and treatment decisions of private well owners in several northeastern U.S. states and in Nova Scotia, Canada. Five papers in the special section are co-authored by CU SRP scientists, former trainees, and their partners. Household Behaviors in Response to Elevated Arsenic Two of the studies, led by a City University of New York, School of Public Health doctoral student and CU SRP trainee Sara Flanagan, delve into influences on well water testing and treatment in Maine, where approximately half of the population relies on unregulated private well water. [Photo of Robert Johnson from the Maine Geological Survey testing well water.]The researchers found that 41 percent of well owners in the central Maine study area have never tested for arsenic. While those surveyed agree that arsenic-related health risks can be severe, homeowners felt low personal vulnerability and tended to underestimate their arsenic risks, even compared to how they perceived their neighbors' risk. The authors conclude that as long as private well testing and treatment are left up to owners, there will always be people exposed to arsenic though drinking water.2 A second study involved rural central Maine households who were notified 3-7 years earlier that their well water contained arsenic above the EPA limit, after their water was tested as part of a CU SRP study to understand the spatial pattern of groundwater arsenic occurrence in Maine.3,4 The researchers found that, even when homeowners were directly provided water quality results, nearly one-third of households in the study still did not take action to reduce exposures. Of the households that did install arsenic treatment systems, 15 percent of those systems failed to produce water below the EPA limit, indicating a risk that households could unknowingly remain exposed unless they vigilantly monitor their water quality. The authors conclude that well owners clearly need more support and guidance if arsenic exposure is to be reduced significantly at the population level.5 Reducing Health Risks In their summary paper, Zheng and Ayotte suggest that an overall, long-term strategy is needed to reduce exposure to arsenic in vulnerable populations, such as low-income families with children and pregnant women, in regions with high levels of arsenic in well water. Interventions tailored toward these vulnerable populations have been applied to other environmental health issues in the past, such as lead-based paint and mercury in fish. The authors say that treating contaminated wells may not be the only way to reduce exposure. Developing alternative water sources for private wells, such as new designs for glacial aquifer wells, may also be an option to reduce arsenic levels in private wells. They also recommend the development of an exposure-reduction tool box that includes the best available guidance on testing and treating alternative water sources, and reducing exposure to arsenic. Zheng and Ayotte conclude that more consideration is needed on the range of options to reduce exposure to arsenic in areas prone to high levels in well water to encourage well testing, treatment, access to alternative water sources, and possible implementation of local, state, and regional private well water regulations. ________________________________ 1Wasserman GA, Liu XH, Lolacono NJ, Kline J, Factor-Litvak P, van Geen A, Mey JL, Levy D, Abramson R, Schwartz A, Graziano JH. 2014. A cross-sectional study of well water arsenic and child IQ in Maine schoolchildren. Environ Health 13:23. 2Flanagan SV, Marvinney RG, Zheng Y. 2015. Influences on domestic well water testing behavior in a Central Maine area with frequent groundwater arsenic occurrence. Sci Total Environ 505: 1274-1281. 3Yang Q, Jung, HB, Culbertson CW, Marvinney RG, Loiselle MC, Locke DB, Cheek H, Thibodeau H, Zheng Y. 2009. Spatial Pattern of Groundwater Arsenic Occurrence and Association with Bedrock Geology in Greater Augusta, Maine. Environ Sci Technol 43(8):2714-2719. 4Yang Q, Jung HB, Marvinney RG, Culbertson CW, Zheng Y. 2012. Can Arsenic Occurrence Rates in Bedrock Aquifers Be Predicted? Environ Sci Technol 46(4):2080-2087. 5Flanagan SV, Marvinney RG, Johnston RA, Yang Q, Zheng Y. 2015. Dissemination of well water arsenic results to homeowners in Central Maine: Influences on mitigation behavior and continued risks for exposure. Sci Total Environ 505:1282-1290. For more information, contact: Yan Zheng Lamont Doherty Earth Observatory Columbia University 405 Comer Palisades, NY 10964 Tel: 845-365-8305 Email: yzheng at ldeo.columbia.edu To learn more about this research, please refer to the following source: Zheng Y, Ayotte JD. 2015. At the crossroads: Hazard assessment and reduction of health risks from arsenic in private well waters of the northeastern United States and Atlantic Canada. Sci Total Environ 505:1237-1247. doi:10.1016/j.scitotenv.2014.10.089 To learn more about the Superfund Research Program, visit the SRP website. All Research Briefs are available on the Research Briefs Web page. To ADD or REMOVE someone from the Research Briefs mailing list, visit the Subscriber's Corner of the NIH listserv. ________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: From nadege.dubuisson at state.or.us Wed Feb 11 17:19:47 2015 From: nadege.dubuisson at state.or.us (Dubuisson Nadege) Date: Thu, 12 Feb 2015 01:19:47 +0000 Subject: [Oregon_dwsp] Register now for the NWEHC- April 17th, 2015 Message-ID: (please distribute widely) Registration is now open for the 7th Annual Northwest Environmental Health Conference! April 17th, 2015 8:00 AM-4:30 PM Double Tree Hotel 1000 NE Mutnomah Street Portland, Oregon REGISTER HERE: http://oeconline.org/2015NWEHC Student Rates available! The conference planning committee is accepting poster proposals on a rolling basis until capacity is reached. Submit here. Don't miss these highlights at the 7th annual conference: ? Dr. John Balbus of NIH/NIEHS will deliver a keynote on "Finding the Sweet Spot," the science behind synergies, where health goals align with the actions most needed to mitigate and increase our resilience to the risks of climate change. ? Three sessions on climate change impacts will highlight how research is being applied to practice in emergency planning, public health and in tribal communities in the Pacific Northwest. ? A wide range of other sessions will feature more than 20 experts on topics including drinking water, air quality, neurodevelopment, engaging communities in measuring environmental exposures, incorporating environmental health into primary care practice, linking health to nature and transportation planning and more. ? CE Units pending for CHES, OHSU School of Nursing, Oregon Board of Naturopathic Examiners and EH Registration Board. Nad?ge Dubuisson, MPH, CHES Public Health Educator Environmental Public Health | Public Health Division | Oregon Health Authority 800 NE Oregon St Ste. 640 | Portland, OR 97232 nadege.dubuisson at state.or.us | Ph: 971.673.1213 | Fax: 971-673-0979 | TTY: 971.673.0372 [Facebook icon] [Twitter icon] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... 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