EPA http://www.epa.gov/- which includes information on asbestos, clean-up, Lead, Mold, etc.

Consumer Safety & Recalls http://www.cpsc.gov/ from swimming pools to items in the home

Polybutylene plumbing in homes http://www.polybutylene.com/poly.html

Federal Pacific Panels http://www.inspect-ny.com/fpe/fpe.html
Fires waiting to happen, debate waiting to be ended

Lowes http://www.lowes.com/

Home Depot http://homedepot.com/