Other than that the site was cleaned up under the Superfund site cleanups of the 90's and capped. I know there is ongoing testing. The town wells for drinking water are no where near the site or the underground plume that the site caused.
There were some studies and I believe circumstancial evidence tha kids who played at the site back in the70's & 80's , before it was declared toxic, were experienceing higher incendences of cancer, but I don't beleive it was ever actually substantiated.
So, although everyone has to make these judgements on there own, I have never felt at risk beause of it and it did not and would not stop me from living in town.
(P.S. my Sister, Brother-in Law and Nephew also live in town and have for 16 years)
EDR also has a service where they can give specific info on types of environmental data available around a specific location. http://www.prudential.com/realestate if you go to the page under home search there's a tab for entering the address & it'll search around for reported problems. It's free, there is a more in depth report but that costs money. Might be a good place to start.
Hope that helps,