7+CA+Water+Quality+Control+Act

7+CA+Water+Quality+Control+Act - California Safe Drinking...

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ETX 138 January 25, 2011 California Safe Drinking Water and Water Quality Control Acts January 25, 2011 George V. Alexeeff, Ph.D., D.A.B.T.
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ETX 138 January 25, 2011 California Safe Drinking Water Act Complies with Federal SDWA Enforced by California Department of Public Health
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ETX 138 January 25, 2011 Goals of California SDWA Everyone has a right to safe drinking water Technology is available to remove contaminants Policy is to reduce contaminant levels Water systems must provide water that is potable
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ETX 138 January 25, 2011 Requirements for Water Providers Water must be “pure” and wholesome “Healthful and potable” Must have plan to notify users of imminent danger from contaminants Private water systems are exempt 25 or fewer users/year
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ETX 138 January 25, 2011
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Drinking Water Standards 6 Evaluate risk to public health Set public health goal- PHG OEHHA Department of Public Health Provide water to the public Ensure that water meets state standards Local Water Agencies Cost to mitigate exposure Technical feasibility Set drinking water standard- MCL
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California Public Health Goals (PHGs) Based strictly on protection of health. For carcinogens, the PHG is set at a risk of 1 cancer case/ 1 million people exposed over lifetime. For noncarcinogens, the PHG includes a “margin of safety”.
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Public Health Goal Process Announce selection of a chemical for toxicology review Prepare evaluation and public health goal (PHG) Conduct internal and external peer review Revise document and PHG Post PHG document for 45-day comment period Hold public workshop, conduct peer review if requested (15 days, and must pay) Revise document and PHG based on comments Post revised PHG document for 30-day comment period Revise document and PHG based on comments Publish final PHG and response to comments 8
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ETX 138 January 25, 2011 State Drinking Water Standards (MCLs) CA Maximum Contaminant Levels (MCLs ) are adopted by the Department of Public Health (DPH) for tap water. CA MCLs are at least as stringent as federal MCLs and are the maximum level allowed to be delivered to the consumer. California can adopt federal MCLs or develop its own For newly identified contaminants, DPH may first develop an “Action Level.” This is an advisory level for otherwise non-regulated chemicals. This can give DPH a target level for monitoring.
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ETX 138 January 25, 2011 Developing State Drinking Water Standards (MCLs) State developed MCLs have to be as close as possible to the state developed public health goal (PHG) while taking into account technical feasibility and cost. For carcinogens, PHG is set at a cancer risk of 1 in 1 million, MCL is usually set in the range of 1 to 100 in a million.
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