Dagny... if you are looking for suggestions... I live on the central Gulf Coast of Florida, and tropical weather interruption of our municipal water supply is not common, but a possibility with water main and sewer lift stations in near proximity... what I have done over the years is to (1) store water ... two 20L Scepter containers and two 6 gal AquaTainers... (2)cut a short section of garden hose with shut off to access my hot water heater drain spigot...(3) purchase a 5 gal bucket Sawyer .1 micron filter system, as well as a portable Sawyer mini filter...(4)work out the titration of stored NADCC pool shock to give me 3ppm chlorine (a measuring scoop titrated to a 5 gal bucket)...(5) replace 1/2gal of sodium hypo chlorite bleach at the beginning of each tropical season...(6) I have renovated an on site shallow water well with a deep piston pump...have some extra 5gal plastic buckets

chemical spill contamination would be a possible evacuation...

the 5gal/20L Scepters are about as heavy as I want to transport...several friends use the smaller "blue plastic" water carboys at the box stores used in home drinking coolers