The state has released the results of its public water testing for the chemicals known as PFAS.
PFAS are chemicals used in water-resistant, stain-resistant, and heat-resistant products, such as carpets, clothing, fire-fighting foams, non-stick pans, and food packaging. Ingestion of these chemicals may increase cancer risk, affect the ability to become pregnant and interfere with pancreatic, thyroid and liver function.
The DNR’s Corey McCoid says the public water testing they conducted covered water supplies in 99 communities.
Samples from the Mississippi River at Burlington, Davenport, and Keokuk had high levels of PFAS. There were also high levels in Central City, Sioux City and Ames, which are believed to be related to chemicals in fire-training or fire-fighting activities. They are known as “forever” chemicals because they stay around for a long time. This testing was done before the EPA’s recent announcement of its proposed drinking water standards, but McCoid says these tests fit in the guidelines.
McCoid says the communities are required to let water users know about the problem. He says water treatment plants are waiting for the final EPA rule approval so they know how to adjust their treatment practices.
He says options are available for individuals who have a concern about their water.
The DNR says Central City’s Well #2 has undergone a Phase 1 review. This review is a table-top exercise that includes synthesis of hydrogeological data, geological information, evaluation of potential sources of PFAS, historical review of potential spills (such as derailments, fires, etc.), and assessment of nearby land uses. Follow-up sampling at Central City showed that their second well (not included in the prior sampling event) had no detectable levels of PFAS – so the city has decided to rely solely on the PFAS-free well (which is Well #4) for the near future. If the water available from that well is insufficient for peak water uses, an additional well may be drilled.
The water supplies in Manchester and Monticello were also tested, along with the water supply at Big River United Energy in Dyersville, with nothing detected. You can find the complete summary and results of the PFAS testing online at iowadnr.gov.
story courtesy of Radio Iowa
