What’s the history of groundwater contamination in Edina?

In the early 2000s, Well 7, a well in Sherwood Park drawing from the Prairie du Chien/Jordan Aquifer, tested above the Maximum Contaminant Level set by the U.S. Environmental Protection Agency for vinyl chloride, a colorless organic gas with a sweet odor. At that time, Well No. 7 was a seasonal well and was operated only in the summer.

Well 7 was shut down in early October 2003 and was not turned on again until after a high-capacity treatment plant was built at the Danen’s Building at 5120 Brookside Ave. in 2012. The plant is equipped with an aeration system specially designed to filter out volatile organic compounds. The treatment plant is Water Treatment Facility No. 6. It treats four of the City’s 18 wells, including Well 7.

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1. Is Edina’s drinking water safe?
2. Who sets the standard for Edina’s drinking water?
3. How often is Edina’s water tested?
4. What’s the history of groundwater contamination in Edina?
5. What is vinyl chloride?
6. Where does vinyl chloride come from?
7. What are the health risks of exposure to vinyl chloride?
8. How much did it cost to build Water Treatment Plant 6?
9. Is water from private wells safe?
10. What is the source of contamination?
11. Where is the plume?
12. Is the contamination just vinyl chloride?
13. What is TCE?
14. What are the health concerns of TCE in drinking water?
15. What amount of TCE in drinking water is safe?
16. How big is the plume of contamination?
17. How was the size of the deep plume determined?
18. What’s the difference between the deep groundwater plume and the shallow groundwater plume?
19. Is there any chance this contamination could extend into another of Edina’s wells?
20. Will my property be tested?
21. Is it safe to garden or harvest my fruits and vegetables?
22. What’s next in dealing with the solvent plume?
23. Are there other National Priorities List sites in Minnesota or across the nation that have groundwater plumes as the basis for listing?
24. What effect does the Highway 100 and County Road 3 Groundwater Plume Site have on property values?
25. What is the difference between the Reilly Tar & Chemical site and the Highway 100 and County Road 3 Groundwater Plume Site?
26. Are you really sure my drinking water is safe?
27. What’s next?