Montana's Kalispell water system uncovers PFAS contamination, public notification issued
(UI) — The Kalispell public water system has discovered per- and polyfluoroalkyl substances (PFAS) in two out of its eleven drinking source water well sites. While PFAS is currently not regulated, the Environmental Protection Agency (EPA) has issued health advisories concerning its potential risks.
The highest concentration of PFAS found in the affected wells measured 6.6 parts per trillion (ppt), which is equivalent to less than seven drops in an Olympic-size swimming pool. Before reaching taps, the water from these wells is mixed with other sources of drinking water. Although the EPA's health advisories list PFAS at 0.02 ppt, current testing methods cannot detect levels below 4 ppt. Discontinuing the affected wells is not feasible at present, as the remaining supply would be insufficient to meet demand.
The city of Kalispell is actively gathering more information and exploring available options to address PFAS contamination in the drinking water supply. In the meantime, consumers are encouraged to educate themselves about PFAS and take steps to mitigate potential health risks associated with exposure. The US Environmental Protection Agency website offers valuable information and recommendations for risk reduction.
Kalispell's initiatives to address the issue include follow-up sampling at well sites, scheduled for March and August 2024, to validate the accuracy of PFAS detection. The city is also assessing potential solutions and exploring funding opportunities through the Department of Environmental Quality (DEQ) to replace affected wells if necessary. Additionally, Kalispell has established a dedicated website to provide the public with information and resources.
As the city continues to gather data and assess options, updates will be provided to the public through the City of Kalispell's Notify Me system. An upcoming open house will also offer community members the opportunity to ask questions in person.
PFAS, a group of man-made chemicals used since the 1940s, have been found in various consumer products and firefighting foam. Facilities such as PFAS manufacturing plants, airports, and military installations are among the sources of PFAS contamination in the environment. Given their widespread use, most individuals have been exposed to PFAS, and there is evidence linking certain PFAS to adverse health effects.
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