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7.B. - Page 2 of 15 <br />exceeding the applicable PHG. The Public Works Services Department prepared the Report in July 2019 <br />(Attachment A) and posted it online at: http://www.redwoodcity.org/waterquaIity. <br />Drinking water constituents that have a California primary drinking water standard and for which a PHG <br />has been set are to be addressed in the Report. Appendix B of the Report notes that the PHG for lead was <br />exceeded. The City is not required to take any action to address contaminant levels that exceed the PHG, <br />as long as they are below the corresponding Maximum Contaminant Level or Action Level. <br />The Code further specifies that a public hearing is to be held for the purpose of accepting and responding <br />to public comment on the Report, and that the hearing can be part of any regularly scheduled meeting. <br />ANALYSIS <br />Preparation of the Report and this public hearing enables the City of Redwood City to meet the <br />requirements of California Health and Safety Code section 116470 for accepting and responding to public <br />comment on the Report. Furthermore, it offers an opportunity to educate and inform the public of their <br />risk to known health hazards. The 2019 Public Health Goal Report prepared by the Public Works Service <br />Department meets the requirements of the Health and Safety Code, and includes monitoring for lead in <br />drinking water. <br />In adherence with the Lead & Copper Rule established by the US EPA in 1991, Redwood City began <br />monitoring for lead by collecting samples from customer taps once every three years. During the last <br />monitoring in 2018, lead was detected in 16 of the 33 samples at levels above the PHG of 0.2 parts per <br />billion (ppb). However, all samples collected were below the EPA Action Level of 15 ppb. <br />2015 Lead Sampling <br />15 <br />14 AL 15 ppb <br />12 <br />10 <br />8 <br />6 <br />4 <br />2 PHG 0.2 ppb <br />0 <br />1 2 3 4 5 6 7 8 9 10 -1112 13.14 15 -16 17 19 19 20 2122 23 24 25 26 27 28 29 30 3132 33 <br />IIIIIIIIIIIIIIlIPbResults -PHG -AL <br />Lead contamination in drinking water does not generally occur from water supply sources or the water distribution <br />system. It is most likely to come from corrosion of household pipes or plumbing fixtures. Most fixtures <br />Page 2 of 4 <br />City of Redwood City 1017 Middlefield Road, Redwood City, CA. 94063 Tel: 650-780-7000 www.redwoodcity.ore <br />315 <br />