Laserfiche WebLink
Perchlorate — OEHHA has not established a numerical health risk for perchlorate <br />because PHGs for non -carcinogenic chemicals in drinking water are set at a <br />concentration at which no known or anticipated adverse health risks will occur, with an <br />adequate margin of safety. <br />Uranium — OEHHA has determined the theoretical health risk associated with the PHG <br />is 1 excess case of cancer in a million people. USEPA has determined the risk <br />associated with the MCL is 5 excess cases of cancer in 100,000 people exposed over a <br />70-year lifetime. <br />5.0 Identification of Risk Categories <br />Section 116470(b)(3) of the Health and Safety Code requires identification of the <br />category of risk to public health associated with exposure to the contaminant in drinking <br />water, including a brief, plainly worded description of those terms. The risk categories <br />and definitions for the contaminants identified above are shown on the accompanying <br />chart. <br />6.0 Description of Best Available Technology <br />Section 116470(b)(4) of the Health and Safety Code requires a description of the best <br />available technology , if any is available on a commercial basis, to remove or reduce the <br />concentrations of the contaminants identified above. The BATS are shown on the <br />accompanying chart. <br />7.0 Costs of Using Best Available Technologies and Intended Actions <br />Section 116470(b)(5) of the Health and Safety Code requires an estimate of the <br />aggregate cost and cost per customer of utilizing the BATs identified to reduce the <br />concentration of a contaminant to a level at or below the PHG or MCLG. In addition, <br />Section 116470(b)(6) requires a brief description of any actions the water purveyor <br />City of Santa Ana 5 2019 PHGs Report <br />75C-8 <br />