Analies Dyjak, M.A. | Research Analyst
**Updated July 16, 2019 to include current data
For Hydroviv’s assessment of Los Angeles tap water, we aggregated water quality test data from Los Angeles Department of Water & Power, and the U.S. Environmental Protection Agency (EPA), as well as from samples that we collect and analyze. We cross reference these data with toxicity studies in the scientific and medical literature, and look at upcoming regulatory changes. The custom water filters that we offer in Los Angeles are optimized with this research in mind.
Source Water Of Los Angeles Drinking Water
The Los Angeles Aqueducts, local groundwater, and supplemental water purchased from the Metropolitan Water District of Southern California (MWD) are the primary sources for the City of Los Angeles. LA's tap water from the MWD is delivered through the Colorado River Aqueduct and the State Water Project’s California Aqueduct.
Arsenic In Los Angeles Drinking Water
Arsenic is a toxic metal that is known to cause cancer and other adverse health issues. Unlike lead, which distributes into water from plumbing, arsenic comes from the source water itself. Arsenic naturally exists in bedrock, and as it weathers overtime, it can leach into surrounding groundwater. It's important to mention that EPA’s standard for arsenic balances the toxicity of the contaminant, with the costs of removing it. That said, Los Angeles is in compliance with EPA's loose water quality standards. According to the 2019 report, arsenic concentrations averaged 3 parts per billion in Los Angeles drinking water. We highly recommend that anyone with more than 1 part per billion take steps to remove arsenic from their water, especially if they have children.
High Levels Of Lead In Los Angeles Drinking Water
Lead enters Los Angeles' drinking and tap water through older lead service pipes and lead-containing plumbing. When corrosion control measures put in place by the municipality fail (like what recently happened in Flint, Michigan), lead leaches into the drinking water, and can reach dangerous levels. Currently,10% of LA water quality samples analyzed for lead are over 5.2 parts per billion. While in compliance with very loose federal regulations, EPA, CDC and American Academy Of Pediatrics all acknowledge that there is no safe level of lead for children.
High Levels Of Chromium 6 In Los Angeles Drinking Water
Chromium 6 is a highly toxic metal that is not regulated by the EPA. According to the most recent report, Chromium 6 levels averaged 1,090 parts per trillion in Los Angeles drinking water. For the sake of perspective, Chromium 6 levels in LA's water quality are 54 times higher than the concentration determined to have negligible impact on cancer risk.
Disinfection Byproducts (DBPs) In Los Angeles Drinking Water
DBPs are a category of emerging contaminants that form when chlorine-based disinfectants react with naturally-occurring organic matter. Although these chemicals are not currently regulated very well, the EPA website discloses that exposure to high levels of disinfection byproducts are associated with an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems.
Still Have Questions About Los Angeles Tap Water?
Hydroviv is a water filtration company that uses water quality data to optimize water filters for each customer's water. The contaminants that we list above are what we consider to be major “points of emphasis” that we use to build water filters that are built specifically for Los Angeles, but our filters provide broad protection against a wide range of contaminants.
If you’re interested in learning more about water filters that have been optimized for LA tap water, or just have questions about water quality in general, feel free to visit www.hydroviv.com, reach out by email (firstname.lastname@example.org) or through our live chat. We also frequently post water-related news on Twitter or Facebook. We pride ourselves in being a reputable source of information on water quality, and your questions will be answered by scientists, not salespeople (we don't have any salespeople).
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