Sunday, February 26, 2017

Consumer Confidence Reports and water quality

`What is the source of your drinking water?  Where does your water ORIGINATE? 
Water in Palo Alto is from Cal Water.  The system for water in Palo Alto is Fetch Hetchy Reginal Water system. 

What chemicals were found in your water that were higher than expected? 
No chemicals were higher than expected. The following is the chemicals in my water :
Aluminum, Chloride, Sulfate, Turbidity, Lead and Copper, Alkalinity, Bromide, Calcium, Chlorate, Hardness, Magnesium, Sodium, Silica. 


  • What chemicals did you NOT expect to find in your water?
    • Lead

Are there associated health risks with the chemicals found in your water?
 Lead: the nervous system is the most sensitive target of lead exposure.  Neurological effects of lead in children have been documented at exposure levels once thought to cause no harmful effects.  In children, acute exposure to very high level of lead may produce encephalopathy and symptoms such as ataxia, convulsion,s hyper irritability, coma and death.   In adults, decreased libido, depression, headache, diminished cognitive performance, dizziness, forgetfulness, fatigue, impaired concentration, impotence, increased nervousness, lethargy, paresthesia and reduced IQ scores might be caused.  


  • What did you discover about your water quality?
    • The water quality in Palo Alto was not bad than expected.  In previous assignment for Air Pollution (Module 3.4), my county was ranked in the 10% for air pollution.  I realized that it is very strict to regulate the water quality in Palo Alto.  The San Francisco Public Public Utilities Commission(SFPUC) regularly collects and tests water samples from reservoirs to check that "the SFPUC's water meets or exceeds federal and state drinking water standard".  The SFPUC regional water system supply comes from local watersheds in Alameda and Santa Clara counties.  I was impressed by their effort of monitoring water quality. 
  • Do you use a filter for your water? What are you trying to filter out? Do you drink bottled water? 
    • Yes I drink water from refrigerator that contains filter.  The filter is supposed to rid of the chemicals that harms for my body.  However, some of chemicals don't affect us negatively such as Fluoride.  Also, I drink bottled water too. I leave the bottle water in my car, so I can drink when I want to drink in the car.  


Source : https://www.atsdr.cdc.gov/csem/csem.asp?csem=7&po=10

3 comments:

  1. Hi Yeana,

    It is scary to think what happened in Flint could happen elsewhere. I appreciated how Cal Water addressed this valid consumer concern in their consumer report. Luckily, the water system currently in place within our county limits our exposure to lead. For example, the major pipelines are not made out of lead and careful water monitoring ensures low levels of contamination.

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  2. Hello Yeana,

    It looks as though the San Francisco area may be more well-regulated than most parts of the country. I feel that the quality of my water here in Seattle, is of poorer quality than the bay area. Nonetheless, you still noted that lead is present within the drinking water. This, as Elena has stated above, is carefully monitored and its levels are regulated by the EPA. Unfortunately, it is impossible to ensure that drinking water will be completely free of all contaminants.

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