Buy a two-pack refill for your BottlePro. Each filter lasts for 2 months or 150-200 liters. Available in 2-pack(4 months) 4 pack(8 months) or 6 pack(12 months).
Approximate Cost from .06 cents - .07 cents per liter
Removes or reduces chemical organic material, chlorine, chlorine byproducts (VOC's, THMs, HAAS etc) taste, odour, pesticides, herbicides, PFAS, heavy metals including lead, copper, mercury and more for over 100+ contaminants. 
The filter cartridge incorporates a 5-stage Ultra Filtration Technology based on activated carbon, hollow fiber and calcium sulfite resulting in a better taste and smell. Meets NSF/ANSI 42 & 53 standards
Check out how our filters work and certifications here