For more information about water quality, or for any questions relating to your drinking water, please contact 781-7215
Water Quality/Consumer Confidence Reports
We are once again proud to present our annual water quality report covering all testing performed between January 1, and December 31, 2017. Over the years we have dedicated ourselves to producing drinking water that meets all state and federal standards. We continually strive to adopt new methods for delivering the best quality drinking water to you. As new challenges to drinking water safety emerge, we remain vigilant in meeting the goals of source water protection, water conservation, and community education while continuing to serve the needs of all our water users.
Please remember that we are always available to assist you should you ever have any questions or concerns about your water.
Drinking Water FluoridationThe city adds fluoride to the treated water produced by the water treatment plant to help prevent dental caries in consumers. Some limited areas along Los Osos Valley Road receive a blend of surface water and ground water that may have a lower fluoride residual. State regulations require the fluoride levels in the treated water be maintained within a range of 0.6 - 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that the fluoride levels in the treated water ranged from 0.1 - 0.9 with an average of 0.62 ppm. Information about fluoridation, oral health, and current issues is available from http://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/Fluoridation.shtml.
Important Health InformationSome people may be more vulnerable to contaminations in drinking water than the general population. Immunocompromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants may be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. The U.S. EPA/CDC (Centers for Disease Control and Prevention) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Water Drinking Hotline at (800) 426-4791 or http://water.epa.gov/drink/hotline.
Source Water Assessment
An assessment of the drinking water sources for the City of San Luis Obispo was conducted March 2014. The surface water sources, Salinas Reservoir and Whale Rock Reservoir, are considered most vulnerable to the following activities although no associated contaminants have been detected: cattle grazing and historic mining activities. To request a summary of the assessment, contact us at 781-7215.