San Francisco was not popping up in the EPA website so I googled "San Francisco Consumer Confidence Report" and found "Annual Water Quality Report 2017" through the San Francisco Water Power Sewer (our water company). At the very end of this blog is the website I used that helped me answer some of the questions :)
San Francisco Water Power Sewer
Answer the following questions:
· What is the source of your drinking water? Where does your water ORIGINATE? (It is treated at a water treatment plant, but what watershed or aquifer is the sources of the water?)
- Hetch Hetchy Reservoir (spring snowmelt flowing down the Tuolumne River to storage in Hetch Hetchy Reservoir)
· What chemicals were found in your water that were higher than expected?
- Ultraviolet light and chlorine disinfection, pH adjustment for optimum corrosion control, fluoridation for dental health protection, and chloramination for maintaining disinfectant residual and minimizing the formation of disinfection byproducts
· What chemicals did you NOT expect to find in your water?
- I did not expect ultraviolet light, chlorine disinfection, pH adjustments, or chloramination
· Are there associated health risks with the chemicals found in your water? (sources for this last question include the EPA, CDC, ATSDR and the National Library of Medicine's ToxNet program.
- a health risk is always cancer
BLOG about your water quality
· Where does your water come from? The source! Track it from the source to your tap.
- Hetch Hetchy Reservoir
· What did you discover about your water quality?
- My tap water is safe to drink
· Do you use a filter for your water?
- No
· What are you trying to filter out?
- lead
· Do you drink bottled water? How does this square with what you learned when you watched the Story of Bottled Water (see next exercise)?
- I do not drink bottled water
- I learned that the plastic from the bottle is bad for the environment and for you
https://sfwater.org/index.aspx?page=634
Hey Rudi,
ReplyDeleteDaly City's water source is also from the Hetch Hetchy Reservoir! My family and I always use a water filter (like a Brita) just in case the tap water might have something it that wasn't filtered. I also do not drink bottled water because I'm not too sure how much plastic affects the water I would drink in bottled water.
Hi Rudi,
ReplyDeleteHetch Metchy is such a fun name to say haha! I was also surprised to read about UV light in the water, very interesting. I looked this up and it may help decontaminate water/kill harmful microorganisms in the water. I had not considered a water filter to help with lead. I wonder!