{"id":261,"date":"2016-04-15T17:47:53","date_gmt":"2016-04-15T17:47:53","guid":{"rendered":"https:\/\/www.vdh.virginia.gov\/drinking-water\/?page_id=261"},"modified":"2026-03-24T07:56:05","modified_gmt":"2026-03-24T11:56:05","slug":"arsenic-and-clarifications-to-compliance-and-new-source-monitoring-rule","status":"publish","type":"page","link":"https:\/\/www.vdh.virginia.gov\/drinking-water\/office-of-drinking-water\/arsenic-and-clarifications-to-compliance-and-new-source-monitoring-rule\/","title":{"rendered":"Arsenic and Clarifications to Compliance and New Source Monitoring Rule"},"content":{"rendered":"<p>The rule was published in the Federal Register (66FR 6976) on January 22, 2001 and became effective on February 22, 2002. This rule changed the arsenic MCL from 50 ug\/L to 10 ug\/L, and it set the MCLG to 0 ug\/L. The rule was published in the Federal Register (66FR 6976) on January 22, 2001 and became effective on February 22, 2002.<\/p>\n<p><a href=\"https:\/\/nepis.epa.gov\/Exe\/ZyPDF.cgi?Dockey=300065YM.txt\" rel=\"\">EPA&#8217;s Quick Reference Guide for Arsenic and Clarification to Compliance and New Source Monitoring Rule<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The rule was published in the Federal Register (66FR 6976) on January 22, 2001 and became effective on February 22, 2002. This rule changed the arsenic MCL from 50 ug\/L to 10 ug\/L, and it set the MCLG to 0 ug\/L. The rule was published in the Federal Register (66FR 6976) on January 22, 2001 [&hellip;]<\/p>\n","protected":false},"author":52,"featured_media":0,"parent":2,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"tags":[],"class_list":["post-261","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Arsenic and Clarifications to Compliance and New Source Monitoring Rule - Drinking Water<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vdh.virginia.gov\/drinking-water\/office-of-drinking-water\/arsenic-and-clarifications-to-compliance-and-new-source-monitoring-rule\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Arsenic and Clarifications to Compliance and New Source Monitoring Rule - Drinking Water\" \/>\n<meta property=\"og:description\" content=\"The rule was published in the Federal Register (66FR 6976) on January 22, 2001 and became effective on February 22, 2002. 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