Now for this week… Let’s look at some of the more dangerous zip codes in Southern California when it comes to certain metals being found in the drinking water. (Hint: good idea to use water filtration systems in these zip codes). Anyone heard about Flint, Michigan’s water situation recently?!!! For those living under a rock google it for a plethora of articles. What about your zip code’s water supply? How does it stack up?
Most information in the rest of this article can be seen at this interesting website with water contaminant stats included for 239 zip codes in the U.S. Keep in mind that this is ONLY listing metal contaminants and is not including fluoride, volatile organic compounds (VOCs), pharmaceuticals, etc.
EPA limits of Lead, Arsenic, Mercury, Cadmium, Aluminum & Copper
- Lead: 15 ppb
- Arsenic: 10 ppb
- Mercury: 2 ppb
- Cadmium: 5 ppb
- Aluminum: 500 ppb (other agencies: 50 ppb)
- Copper: 1300 ppb
- Arsenic has been shown to cause "skin damage or problems with circulatory systems, and may have increased risk of getting cancer".
- Cadmium has been linked to "kidney damage".
- Copper: "Short term exposure to copper has been shown as a possible cause of gastrointestinal distress; Long term exposure to copper has been linked to "liver or kidney damage".
- Lead poisoning in infants and children has been shown to cause "delays in physical or mental development; children could show slight deficits in attention span and learning abilities." In adults, lead poisoning has been linked to kidney problems and/or high blood pressure."
- High Mercury concentrations in drinking water can lead to "kidney damage".
Yellow highlights are Los Angeles zip codes
The EPA limit for Al in drinking water is 500 ppb, though the EPA does not consider Al to be a contaminant of concern in municipal water systems. Interestingly some agencies recommend Aluminum be less then 50 ppb. Because high Al may be indicative of poor overall water quality or industrial contaminants, here are some of the highest Al results and are areas that may merit further study:
- Zip code 90066: 198.40 ppb (Culver City area)
- Zip code 90403: 171.13 (Santa Monica)
- Zip code 91506: 114.05 (Burbank)
- Zip code 92501: 106.02 (Riverside)
- Zip code 92656: 130.95 ppb (Mission Viejo – Laguna Hills just south of L.A.)
The EPA limit for Cu in drinking water is 1300 ppb. No Southern California zip codes exceeded even 90% of the EPA limit.
The EPA limit for As in municipal water is 10 ppb. None of the analyzed samples exceeded the current EPA limit of 10 ppb. The highest in Southern California zip codes are:
- Zip code 90066: 4.63 ppb (Culver City area)
- Zip code 92124: 11.30 ppb (San Diego where the 15 & 52 intersect)
The EPA limit for Cd in municipal water is 5 ppb. The highest in Southern California zip code is:
- Zip code 92124: 3.09 ppb (San Diego where the 15 & 52 intersect)
The EPA limit for inorganic Hg in municipal water is 2 ppb. All Southern California zip codes showed 0.00 ppb for Hg.
The EPA limit for Pb in municipal water is 15 ppb.
- Zip code 90066: 8.12 ppb (Culver City area)
- Zip code 92103: 51.10 ppb (San Diego – between Old Town & Hillcrest)
- Zip code 92124: 5.15 ppb (San Diego where the 15 & 52 intersect)
Again, these tests are just for metals/metalloids and do not account for volatile chemicals like chlorine, chloramines, VOCs (DBPs like THM’s), SOC’s (pesticides, herbicides), tastes & odors, pharmaceuticals, or fluoride.
If you want to test your home water, then National Testing Laboratory (NTL) = cheap & good. Here’s their website: http://www.ntllabs.com/.
Enjoy the video below, and as always, feel free to pass it along!
Medical Disclaimer: Information provided in this article is for informational purposes only. The information is a result of years of practice and experience by Yoshi Rahm, DO. However, this information is NOT intended as a substitute for the advice provided by your physician or other health care professional, or any information contained on or in any product label or packaging.
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