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Information On Memphis Tap Water

Analies Dyjak @ Friday, November 10, 2017 at 11:56 am -0500

Kezia Snipe | Hydroviv Research Analyst

For Hydroviv’s assessment of Memphis' water quality, we aggregated water quality test data from Memphis Light, Gas & Water, the city’s water provider and the U.S. Environmental Protection Agency (EPA). We cross reference these data with toxicity studies in the scientific and medical literature, and delve into upcoming regulatory changes. The water filters that we offer at Hydroviv are optimized with these figures in mind.

Source Of Memphis Drinking Water

Memphis tap water comes from the Memphis Aquifer, which is a natural underground reservoir located from 350 to 1,100 feet below ground surface. It is a part of a larger system of aquifers extending to a depth of 2,600 feet. The aquifers are composed of layers of clay, sand and gravel that act as a natural filter to remove many impurities from the water, which is contained within the sands. The wells connected into this system are commonly known as “artesian wells” because they draw the naturally purified water to the surface by releasing the built-up pressure which forces the water up the well like liquid through a straw.

Lead in Memphis Tap Water

Lead levels in Memphis, Tennessee tap water are higher than what health officials claim to be safe. The current lead levels in Memphis water are 8.72 parts per billion. Although the EPA Action Level is 15 parts per billion, EPA's Maximum Contaminant Level Goal is 0 parts per billion. Lead enters tap water from older lead service pipes and plumbing. According to the American Academy of Pediatrics, there is no safe level of lead - and any amount can cause developmental issues, lowered IQ, and other impacts to the brain. 

Use of Chlorine in Memphis Tap Water

Like most cities in the United States, Memphis adds chlorine to its water supply to keep consumers safe from waterborne illness. While chlorine is not necessarily harmful, it can make tap water taste and smell very unpleasant. When you choose to filter chlorine from 

Disinfection Byproducts (DBPs) In Memphis 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 has admitted that they are associated with an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems.

Still Have Questions About Memphis Drinking 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 Memphis, but all of our our filters provide broad protection against a wide range of contaminants (including lead).

If you’re interested in learning more about water filters that have been optimized for Memphis tap water, or just have questions about water quality in general, feel free to visit www.hydroviv.com, reach out by email (hello@hydroviv.com) 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).

Please Share This Memphis Water Quality Article On Social Media With Anyone You Think Would Benefit From The Information!

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Analies Dyjak @ Tuesday, November 14, 2017 at 4:41 pm -0500

**Updated June 10, 2020 to include Nashville's 2020 Consumer Confidence Report. 

Analies Dyjak, M.A.  |  Hydroviv Research Analyst

For Hydroviv’s assessment of Nashville's water quality, we aggregated water quality test data from Metro Water Services, the U.S. Environmental Protection Agency (EPA), as well as 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 build and sell to our customers in Nashville, are optimized with this research in mind.

Source Of Nashville Drinking Water

Nashville’s drinking water comes from the Cumberland River, which is treated at both the K.R. Harrington and Omohundro water filtration plants. The Cumberland River has historically been plagued with industrial pollution. The Tennessee River Keepers are in the midst of a lawsuit with 3M, which is a major manufacturer of Per and Polyfluoalkyl Substances (PFAS).

PFAS In Nashville Drinking Water

Per and Polyfluoroalkyl Substances or PFAS are a category of chemicals found in various non-stick/stain resistant products, as well as fire fighting foam. PFAS are considered to be "emerging contaminants" because they are not currently regulated by EPA, but are known to be toxic, carcinogenic, and persistent in the environment. PFAS have been detected at the Nashville International Airport. Most municipalities, including Nashville, don't test for or remove PFAS from tap water, and most water filters are not designed to remove PFAS. If you'd like to find water filters that do remove PFAS from drinking water, check out this Duke/NC State study

Lead In Nashville Drinking Water

Lead enters Nashville's tap and drinking 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 samples analyzed for lead in Nashville's water are over 1.6 part per billion. Though currently in compliance with federal regulations, EPA and CDC both acknowledge that there is no safe level of lead, and federal regulations do not take into account levels measured at an individual tap. Homes built before 1986 are particularly susceptible to high lead levels. The American Academy of Pediatrics recommends that any taps used to serve children have lead levels no higher than 1 part per billion. Hydroviv Undersink filters are NSF/ANSI certified to remove lead from drinking water.

Update March 2018: Nashville has started testing the taps in their public schools, and are finding very high levels of lead. We wrote a dedicated article on this that can be read HERE.

Chromium 6 In Nashville Drinking Water

Chromium 6 (also known as hexavalent chromium) is a highly toxic metal that is not regulated by the EPA. In recent years, tap water in Nashville has averaged 80.5 parts per trillion for chromium 6. For the sake of perspective, these levels are over 4 times higher than the concentration determined to have negligible impact on cancer risk.

Disinfection Byproducts (DBPs) In Nashville 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 has admitted that they are associated with an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems. Nashville's water quality has tested positive for a range of disinfection byproducts including chloroform and bromodichloromethane, both of which are trihalomethanes.

Still Have Questions About Nashville Drinking 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 Nashville's tap and drinking water, but all of our filters provide broad protection against a wide range of contaminants (including lead).

Please Share This Nashville Water Quality Article On Social Media With Anyone You Think Would Benefit From The Information!

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