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.