The hollow fiber filter in the Lifestraw Go Bottle will work for 1000L, but if you're a heavy drinker, you might need the Go Replacement Filter. It'll make sure bacteria, protozoa, and sediment don't flow down your gullet, so you can drink from whatever water source is most convenient.
Hollow fiber filter
Filters bacteria, protozoa, and sediment
Eliminatesprotozoa, bacteria, sedimentFilterhollow-fiber membranePore Size0.2 micronCartridge Life1000 LField CleanableyesRecommended Usehiking & camping, backpacking, travel