Water Quality InformationWritten By Actual Experts

Ernesto Esquivel  |  Water Nerd

For Hydroviv’s assessment of Columbus drinking water, we collected water quality test data from the city’s Consumer Confidence Report and the U.S. Environmental Protection Agency. We cross referenced Columbus water quality data with toxicity studies in scientific and medical literature. The water filters that we sell at Hydroviv are optimized to filter out contaminants that are found in Columbus drinking water.

Where Does Columbus Source Its Drinking Water?

Columbus sources its drinking water from the Scioto River, Big Walnut Creek, and groundwater from the Scioto River Valley. The city is serviced by three water treatment plants that each take care of a certain area of the city. The three plants are the Dublin Road treatment plant (DRWP), the Hap Cremean Water Plant (HCWP), and the Parsons Avenue Water Plant (PAWP).

Chromium 6 In Columbus Drinking Water

Chromium 6 is a highly toxic metal that is currently unregulated by the EPA. In recent years, Columbus city water has had a problem with this dangerous contaminant. Chromium 6 pollution is associated with metal processing, tannery facilities, chromate production, stainless steel welding, and pigment production. In this years water quality report, concentrations of Chromium 6 were detected as high as 0.35 parts per billion in certain groundwater sources. These levels are 17 times higher than the concentration determined to have a negligible impact on cancer risk. EPA has acknowledged that Chromium 6 is a known human carcinogen through inhalation, but is still determining its cancer potential through ingestion of drinking water. Lung, nasal and sinus cancers are associated with Chromium 6 exposure. Ingestion of extremely high doses of chromium 6 compounds can cause acute respiratory disease, cardiovascular, gastrointestinal, hematological, hepatic, renal, and neurological distress which may result in death.

Disinfection Byproducts In Columbus Drinking Water

Columbus city water problems also includes high concentrations of disinfection byproducts or DBPs. DBPs are formed when chlorine-based disinfectants react with organic matter. They are split into two categories: Total Trihalomethanes (TTHMs) and Haloacetic Acids-5 (HAA5). Concentrations of HAA5 averaged 29.4 parts per billion at DRWP, 45.3 parts per billion at HCWP, and 8.4 parts per billion at PAWP. Concentrations of TTHMs averaged 40.2 parts per billion at DRWP, 53 parts per billion at HCWP, and 34.1 parts per billion in PAWP. For a bit of perspective, EPA’s Maximum Contaminant Level for HAA5 is 60 parts per billion and 80 parts per billion for TTHMs. Disinfection Byproducts are a category of emerging contaminants which means they have been detected in drinking water but the risk to human health is unknown. Regulatory agencies have very little knowledge about the adverse health effects of DBPs, and their toxicity. EPA has stated that they have been linked to an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems.

It’s important to note that only a handful of contaminants are required to be included in annual Consumer Confidence Reports, and that there are hundreds of potentially harmful unregulated contaminants that aren’t accounted for. If you’re interested in learning more about water filters that have been optimized for Columbus tap water quality, feel free to visit www.hydroviv.com to talk to a Water Nerd on our live chat feature or send us an email at hello@hydroviv.com.



Analies Dyjak  |  Policy Nerd

For Hydroviv’s assessment of the city of Milwaukee, Wisconsin’s drinking water, we collected water quality test data from the city and the U.S. Environmental Protection Agency. We cross referenced their water quality data with toxicity studies in scientific and medical literature. The water filters that we sell at Hydroviv are optimized to filter out contaminants that are found in Milwaukee’s drinking water.

Where Does Milwaukee Source Its Drinking Water?

Milwaukee sources its drinking water from Lake Michigan. Lake Michigan has had a long history of pollution, including a recent lawsuit involving Chromium 6 releases from an abutting steel facility.

Chromium 6 In Milwaukee’s Drinking Water

Chromium 6 is a highly toxic metal that is currently unregulated by the EPA. In recent years, the city of Milwaukee's water has had a major problem with this dangerous contaminant. Chromium 6 pollution is associated with metal processing, tannery facilities, chromate production, stainless steel welding, and pigment production. This years water quality report for Milwaukee found levels of Chromium 6 as high as 0.25 parts per billion. These levels are 12.5 times higher than the concentration determined to have a negligible impact on cancer risk. EPA has acknowledged that Chromium 6 is a known human carcinogen through inhalation, but is still determining its cancer potential through ingestion of drinking water. Lung, nasal and sinus cancers are associated with Chromium 6 exposure. Ingestion of extremely high doses of chromium 6 compounds can cause acute respiratory disease, cardiovascular, gastrointestinal, hematological, hepatic, renal, and neurological distress which may result in death.

Lead In Milwaukee's Drinking Water 

In recent years, the city of Milwaukee has also had a problem with lead in drinking water. Lead enters Milwaukee's tap water through old lead service pipes and lead-containing plumbing. 10% of sites that were tested for lead had concentrations over 7.2 parts per billion. The highest concentration detected in 2017 was 130 parts per billion, which is a whopping 8.6 times higher that the Federal Action Level of 15 parts per billion. Environmental Protection Agency, Center for Disease Control and American Academy of Pediatrics all recognize that there is no safe level of lead for children. These health and regulatory organizations are trying to reduce the allowable limit, so a concentration of 130 parts per billion is of serious concern. Treated water leaving the plant may be in compliance with loose EPA standards, but could become contaminated once it enters older infrastructure. Houses built before 1986 were most likely built with lead plumbing and lead fixtures. Lead exposure can cause developmental issues, lowered IQ, and damages to the kidneys and brain.

Perfluorinated Compounds In Milwaukee's Drinking Water

This years water quality report for Milwaukee included test data from six Perfluorinated Compounds (PFCs). Perfluorinated Compounds are associated with firefighting foam, non-stick cookware, Scotchguard and other solvents from manufacturing. The two PFCs that are the most well known and the most researched are Perfluorooctanoic acid (PFOA) which was detected at 2.1 parts per trillion and Perfluorooctane-sulfonic acid (PFOS) which was detected at 2 parts per trillion. The Agency for Toxic Substances and Disease Registry recently recommended setting a Minimum Risk Level of 20 parts per trillion for both of these substances. These data are preliminary and the effects to human health are still unknown. This category of chemicals are “emerging contaminants” which means they are thought to pose a potential threat to human health and the environment, but haven't yet been regulated. Perfluorinated Compounds contribute to environmental contamination largely due to the fact that they are highly resistant to degradation processes, and thus persist for many years in water, air and can enter the food chain via bioaccumulation in certain animal species.

Chloramine In Milwaukee’s Drinking Water

While most municipalities use chlorine as the primary drinking water disinfectant, Milwaukee’s drinking and tap water is disinfected with chloramine. Chloramine is primarily responsible for what many customers report as the “bad taste” or “pool smell” of tap water. Unlike chlorine, chloramine does not dissipate if a container of water is left in the refrigerator overnight. Most one-size-fits-all water filters use filtration media that doesn’t do a great job removing chloramine, but the filters that we design and build at Hydroviv for Milwaukee use a special filtration media that is purposefully designed to remove chloramine.

It’s important to note that only a handful of contaminants are required to be included in annual Consumer Confidence Reports, and that there are hundreds of potentially harmful unregulated contaminants that aren’t accounted for. If you’re interested in learning more about water filters that have been optimized for the city of Milwaukee’s tap water quality, feel free to visit www.hydroviv.com to talk to a Water Nerd on our live chat feature or send us an email at hello@hydroviv.com.

Aakriti Pandey  |  Contributor

Editor's Note: This article is part of a new initiative to include stories on our blog that link scientific policy to everyday life. Recently, the new administration proposed changes to the EPA budget that would gut the Great Lakes Restoration Initiative (GLRI), which could impact the water quality of major cities (e.g. Chicago, Milwaukee) 

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