Ultralight Water Filter

Aquamira Frontier Pro Water Filter 2.0 oz  - 3 micron Price: $24.00 3.9	Aquamira Water Bottle & Filter 5.3 oz / 22 fl.oz  - 2 micron Price: $24.95 2.9	MSR HyperFlow MicroFilter Water Filter 7.8 oz  - 0.2 micron Price: $99.95 3.2
Katadyn Mini Water Filter 8 oz  - 0.2 micron Price: $98.95 (no ratings)	Katadyn Hiker Water Filter 11 oz  - 0.3 micron Price: $63.95 4.0	Katadyn Hiker Pro Water Filter 11 oz  - 0.3 micron Price: $78.95 (no ratings)

UV Light Purification

SteriPen Adventurer Water Purifier 3.6 oz  - UV Light Price: $96.85 3.5

SteriPen Traveler Water Purifier 3.6 oz  - UV Light Price: $96.85 4.3

SteriPen Journey LCD Water Purifier 4.5 oz  - UV Light Price: $96.85 (no ratings)

Chemical Purification

Potable Aqua Iodine Tablets 1 oz  - iodine Price: $6.49 3.7

Aquamira Water Treatment 3 oz  - chlorine dioxide Price: $14.95 4.3