I wasn't quite old enough to remember, but in looking at old Chicago Tribune newspapers I hadn't realized just how much drama there was about phosphate and non-phosphate detergents in the Great Lakes area. Apparently P&G actually took their detergents off the market in the city of Chicago for a time when there was a phosphate ban put in place for the city (but not the suburbs). My grandmother used the 5-gallon-bucket type detergent for many years in her Maytag in suburban Chicago and the lime encrustation was bad... I did some research (more accurately, opposition research) for one of the big chemical companies back in 1992 when I was between jobs looking at FOIA documents in several areas around big phosphate manufacturers (I remember in Pennsylvania and Tennessee).