Low-flow toilets cause a stink in SF

http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/02/28/BAVP1HUSUD.DTL&tsp=1

The city has already spent $100 million over the past five years to upgrade its sewer system and sewage plants, in part to combat the odor problem.

Now officials are stocking up on a $14 million, three-year supply of highly concentrated sodium hypochlorite - better known as bleach - to act as an odor eater and to disinfect the city's treated water before it's dumped into the bay. It will also be used to sanitize drinking water.