[RWebb]

it might if the guys that run the filtration plants, tmt. dam operations get sick

fire or earthquake are risks to the water supply

I stock water all the time, despite owning some camping filters...

Two Tips:

1. always be prepared to camp or 'camp' in your house for a couple of weeks water/food/first aid/ etc.

2. visit your friendly neighborhood LDS/Mormon and get a tour of the basement - they know what they're doing in terms of being ready for a disaster