Water Filters For Shark Tank Cities – Tagged "hexavalent chromium" – Hydroviv

Water Filters For Shark Tank Cities — hexavalent chromium

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Barbara: NYC

Barbara: NYC

Analies Ross-Dyjak | Policy Analyst   

Hello New York City! On Shark Tank, we pitched to Barbara Corcoran, a titan of NYC real estate. New York City is often touted as the gold standard for tap water -- while it's true that the source water is pristine, the water runs into problems as it passes through older infrastructure...  We wanted to give Shark Tank viewers some examples of how our Water Nerds examine water quality data before building a customer's order. This article gives a peek into our process for building filters for New York City residents. 

The Elephant In The Room: Lead Contamination

New York City is an old city, with very old plumbing infrastructure, so it's no surprise that many homes have lead in their water. Even though current regulations allow for up to 10% of a city's lead samples to be 15 ppb or higher, EPA and CDC both recognize that there is no safe level of lead for children. Leading advocacy groups like the American Academy of Pediatrics are pushing for the 15 ppb citywide action level to be lowered to 1 ppb. 

Here's what the most recent NYC lead data show:

  • 10% of the tap water samples had lead concentrations over 11 parts per billion. For reference, this is almost 3x higher than the most recent measurements for Flint's water (4 ppb measured in February 2019).
  • 26 of the 487 samples tested for lead were above the 15 parts per billion action level threshold.  
  • The highest home tested (of the 487) had lead levels of 190 parts per billion.

Long story short, lead contamination is the biggest problem with New York City's drinking water. If you're interested in more details, our Water Nerds have written articles about this in homes and schools.

Chromium 6 In New York City's Drinking Water 

Chromium 6 pollution is associated with metal processing, tannery facilities, chromate production, stainless steel welding, and pigment production. The 2017 water quality report for New York City found levels of Chromium 6 as high as 47 parts per trillion. While this concentration is low in comparison to cities like Chicago and Pittsburgh, the levels are roughly twice as high as what California Water Boards claims to "have negligible impact on cancer." Unlike lead (which leaches from lead pipes and plumbing), chromium 6 contaminates the source water itself, so the only way to get rid of it is by using a product that filters chromium 6.

Disinfection Byproducts In New York City's Drinking Water 

Disinfection byproducts (DBPs) are formed when chlorine-based disinfectants react with naturally-occurring organic matter in the water. From a regulatory standpoint, DBPs are categorized into two classes: Total Trihalomethanes (TTHMs) and Haloacetic Acids-5 (HAA5), but you can easily identify individual chemicals within these classes by looking for "chloro" or "halo" in the chemical's name. Because DBPs are categorized as an "emerging contaminant," regulatory agencies don't have great toxicity data at low concentrations, but high levels of DBPs are linked to an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems. 

What Actions Can New York City Residents Take? 

Although Hydroviv's Water Nerds takes all contaminants into account when designing and building filters for New York City residents, minimizing exposure to lead should be the #1 priority for people in The Big Apple. 

For people who do not filter their water, we recommend allowing the faucet to run for 2-5 minutes before drinking or cooking. This allows the water that has been sitting stagnant and accumulating lead for a long period of time to flush out. We also encourage New York City residents to take advantage of the free lead testing program offered by the city. Because lead levels at an individual faucet can vary based on the overall building's water usage for the day, we recommend retesting the water on several occasions to get a more complete picture. For more information about New York City's Free Test program, call 311 or visit www.nyc.gov/apps/311.  

 

Lori: Chicago

Lori: Chicago

Analies Ross-Dyjak | Policy Analyst

As you may have seen in our pitch on Shark Tank, every city's water is different, and our undersink filters are optimized for their unique problems. Water quality is especially important to a Shark, so we wanted to do a quick breakdown on each Shark's water. In this post, we'll explore Chicago, home to none other than Lori Greiner!

Examining Chicago’s Water Source: Lake Michigan

Chicago draws its drinking water from Lake Michigan - a body of water that has been historically plagued with problems caused by industrial polluters. Illinois has jurisdiction over 64 miles of Lake Michigan shoreline, all of which has been categorically assessed as “threatened” due to the high levels of E. coli, polychlorinated biphenyls, and mercury. In addition to these regulated contaminants, drinking water drawn from Lake Michigan also has tested positive for unregulated contaminants including chromium 6 and PFAS.

Does Chicago’s Aging Infrastructure Contaminate Tap Water With Lead?

Lead accumulates in tap water that flows through lead-containing pipes, soldered joints, and plumbing fixtures. Chicago is an older city and about 80% of water service lines city-wide are made of lead. For this reason, it should not be a huge surprise that Chicago's lead levels are high. In the most recent water quality report, multiple homes had lead levels that exceed EPA's Action Level, and 10% of samples had lead concentrations over 9.1 parts per billion (pbb). While these are "compliant" with loose federal regulations, EPA, Center for Disease Control, American Academy of Pediatrics, and World Health Organization all agree that there is no such thing as a safe amount of lead for children. Additionally, most people are surprised to learn that only 50 samples are collected every 3 years in Chicago (population 2.7 million people).

How Can I Protect Myself Against Lead Contamination In Chicago Drinking Water?

In summary, there's huge potential for lead contamination in Chicago drinking water. For that reason, when our Water Nerds build filters for Chicago residents, we design them to handle the worst case scenario for lead. If your only concern is lead contamination and you don't want to purchase a filter rated to remove lead, city officials recommend letting your tap run for 2 minutes before drinking or cooking.  Hydroviv encourages Chicago residents to take advantage of Chicago’s free lead-testing program! Call 311 or visit http://www.chicagowaterquality.org/home for more information.

How High Are Chromium 6 Levels In Chicago?

Hexavalent chromium, also known as chromium 6 or the Erin Brockovich chemical, is unregulated and present in an overwhelming majority of public water supplies. In April of 2017, U.S Steel Co dumped over 300 pounds of hexavalent chromium into a tributary of Lake Michigan. The $900,000 settlement doesn’t even begin to touch mitigation costs associated with chromium 6 contamination. Chromium 6 concentrations in Chicago drinking water ranged from 180 to 220 parts per trillion. Despite being an unregulated contaminant, these levels are roughly 10 times higher than what the California Water Boards considers to have a negligible risk on cancer. Chromium 6 is typically discharged as a liquid effluent from metal processing, tannery facilities, chromate production, stainless steel welding, and pigment production - all of which occur at some capacity in surrounding Lake Michigan communities. Unlike lead, which comes from lead-containing pipes, solder, valves, and fixtures, chromium 6 contamination comes from the water sources itself. The only way to remove it from drinking water is by using a high quality filter (like ours)!

Mark: Dallas

Analies Ross-Dyjak | Policy Analyst   

Thanks for watching us on Shark Tank! This post is part of a series unpacking each Shark's water quality. Mark Cuban may hail from Pittsburgh, but he's since made Dallas his home (Go Mavericks!). Here are some problems with Dallas water -- all things we take into account when optimizing our filters for Dallas residents. 

Where Does Dallas Water Utilities Get Its Drinking Water?

The city of Dallas draws water from seven different surface water sources: the Elm Fork of the Trinity River and lakes Ray Roberts, Lewisville, Grapevine, Ray Hubbard, Tawakoni and Fork. As is the case with any surface water source, these lakes and rivers can become contaminated by polluters within the watershed. For Dallas, this could mean runoff from all sorts of nasty stuff, like gas stations, industrial sites, agriculture, and even natural gas fracturing!

Chromium 6 Contamination In Dallas Drinking Water

Let's start with an entirely unregulated chemical -- Chromium 6, also known as hexavalent chromium or the “Erin Brockovich chemical.” This is an extremely toxic heavy metal that can cause all sorts of health problems. Chromium 6 in Dallas tap water averages 149 parts per trillion (this is 8 times higher than what the California Water Boards considers to be safe!) Chromium 6 is a liquid effluent associated with metal processing, tannery facilities, chromate production, stainless steel welding and pigment production. The only way to get rid of chromium 6 in drinking water is by using a product (like ours) that's optimized to remove it. 

What Are DBPs And Are They Present In Dallas Tap Water?

DBPs, or disinfection byproducts , are a category of emerging contaminants, and form when chlorine-based disinfectants react with naturally-occurring organic matter. Dallas disinfects its drinking water with chlorine to protect against waterborne illness, so it’s no surprise that disinfection byproducts are present. Regulations for these chemicals aren't strict and the effects on health aren't well understood, but EPA has acknowledged that some DBPs can cause an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems.   

Why Does Dallas Tap Water Smell Like A Pool?

Dallas uses chlorine as a primary drinking water disinfectant to protect against waterborne diseases. Chlorine is most popular for giving drinking water a “pool lockerroom” taste and smell. While not typically considered to be harmful on its own, Hydroviv filters remove the unpleasant odor.