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The tables present Health Advisory concentrations for cancer risk and noncancer effects over One-day, Ten-day, and Lifetime exposure durations, including assumptions for child and adult intake. They clarify that advisories are informal guidance for protecting public health, while regulated contaminants use enforceable MCL and MCLG values, and benchmark updates reflect current agency assessments.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/2018-drinking-water-standards-and-health-advisories-tables-2018-edition-publication-information/565658/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/2018-drinking-water-standards-and-health-advisories-tables-2018-edition-publication-information/565658.png","ImageObject",300,407,{"name":92,"@type":93},"Jordan Avery","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-20","2026-10-13",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What changed in the 2018 edition of the DWSHA tables?","Question",{"text":112,"@type":113},"The March 2018 amendments corrected typographical errors and added health advisories published after 2012.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What do the One-day and Ten-day Health Advisories assume?",{"text":117,"@type":113},"They assume a 10 kg child with daily drinking water consumption of 1 L/day.",{"name":119,"@type":110,"acceptedAnswer":120},"Are Health Advisories legally enforceable federal standards?",{"text":121,"@type":113},"No. They are informal technical guidance to assist officials and managers in protecting public health, not legally enforceable standards.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},565658,1792466293,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":46,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":31},1099523882367,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","2018 Edition of the Drinking Water Standards and Health Advisories Tables  \nThe 2012 Drinking Water Standards and Health Advisories ( DWSHA ) Tables were amended March 2018 to fix typographical errors and add health advisories published after 2012.  \n2018 Edition of the Drinking Water Standards and Health Advisories  \nEPA 822-F-18-001  \nOffice of Water  \nU.S. Environmental Protection Agency Washington, DC  \nMarch 2018  \nRecycled/Recyclable Printed on paper that contains at least 50% recycled fiber.  \nThe Health Advisory (HA) Program, sponsored by the EPA’s Office of Water (OW), publishes concentrations of drinking water contaminants at Drinking Water Specific Risk Level Concentration for cancer (10-4 Cancer Risk) and concentrations of drinking water contaminants at which noncancer adverse health effects are not anticipated to occur over specific exposure durations-One-day, Ten-day, and Lifetime-in the Drinking Water Standards and Health Advisories (DWSHA) tables. The One-day and Ten-day HAs are for a 10 kg child and the Lifetime HA is for a 70 kg adult. The daily drinking water consumption for the 10 kg child and 70 kg adult are assumed to be 1 L/day and 2 L/day, respectively. The Lifetime HA for the drinking water contaminant is calculated from its associated Drinking Water Equivalent Level (DWEL), obtained from its RfD, and incorporates a drinking water Relative Source Contribution (RSC) factor of contaminant-specific data or a default of 20% of total exposure from all sources. Maximum Contaminant Levels (MCLs) and Maximum Contaminant Level Goals (MCLGs) for some regulated drinking water contaminants are also published.  \nHAs serve as the informal technical guidance for unregulated drinking water contaminants to assist Federal, State and local officials, and managers of public or community water systems in protecting public health as needed. They are not to be construed as legally enforceable Federal standards. EPA’s OW has provided MCLs, MCLGs, RfDs, One-Day HAs, Ten-day HAs, DWELs, Lifetime HAs, Drinking Water Specific Risk Level Concentration for cancer (10-4 Cancer Risk), and Cancer Descriptors in the DWSHA tables. HAs are intended to protect against noncancer effects. The 10-4 Cancer Risk level provides information concerning cancer effects. The MCL values for specific drinking water contaminants must be used for regulated contaminants in public drinking water systems.  \nThe DWSHA tables are revised periodically by the OW so that the benchmark values are consistent with the most current Agency assessments. Reference dose (RfD) values are updated to reflect the values in the Integrated Risk Information System (IRIS) and the Office of Pesticide Programs (OPP) Reregistration Eligibility Decisions (REDs) documents. The associated DWEL is recalculated accordingly. The 2018 DWSHA tables do not reflect assessments from IRIS or OPP published from 2012 to 2018. The DWSHA tables are currently undergoing a modernization effort to move the relevant HA information into a web-based format. This posting of the 2018 DWSHA tables is an intermediate step to address typographical errors and include health advisories published since the 2012 tables were published.  \nA Lifetime noncancer benchmark is made available to risk assessment managers for comparison to the cancer risk level drinking water concentration (10-4 Cancer Risk) and to determine whether thenoncancer Lifetime HA or the cancer risk level drinking water concentration provides a more meaningful scenario-specific risk reduction. In this regard, the Office of Water defines the Lifetime HAas the concentration in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure, whereas the 10-4 Cancer Risk is the concentration of the chemical contaminant in drinking water that is associated with a specific probability of cancer. The Office of Water also advises consideration of the more conservative cancer risk levels (10-5, 10-6), found i","cbCaiqCb5bASCEjz","https://ap.wps.com/l/cbCaiqCb5bASCEjz","pdf",795756,"English","# Health Advisory Program Overview\n## Exposure Durations and Intake Assumptions\n## Purpose and Legal Status of Health Advisories\n## Benchmark Updates and Data Sources\n## Rounding, Presentation Styles, and Access Information","[{\"question\":\"What changed in the 2018 edition of the DWSHA tables?\",\"answer\":\"The March 2018 amendments corrected typographical errors and added health advisories published after 2012.\"},{\"question\":\"What do the One-day and Ten-day Health Advisories assume?\",\"answer\":\"They assume a 10 kg child with daily drinking water consumption of 1 L/day.\"},{\"question\":\"Are Health Advisories legally enforceable federal standards?\",\"answer\":\"No. They are informal technical guidance to assist officials and managers in protecting public health, not legally enforceable standards.\"}]","2018 Drinking Water Standards and Health Advisories Tables - 2018 Edition - Publication Information | PDF",1791856891]