What amount of TCE in drinking water is safe?

In 2013, MDH developed a Health-Based Value, or guideline, of 0.4 micrograms of TCE per liter. This level of TCE is safe for all people exposed to TCE in drinking water at any time during their life, including pregnant women and their fetuses, infants, children and other sensitive people, including those with impaired immunity.

A level of 2 micrograms per liter of TCE in drinking water protects all people who are exposed for an entire lifetime from cancer. The increased risk for cancer is estimated to be 1 additional cancer case in 100,000 people, which is considered a negligible cancer risk. The level is also safe for healthy adults who are only exposed to TCE after age 18, and protects pregnant women and their developing fetuses from heart defects.

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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?