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Water System Comparison

Reverse OsmosisBottled WaterExchange TankWater SoftenersOne Water System
Cost Per Gallon $0.18 – $0.25Cost Per Gallon $0.79 – $5.00Cost Per Gallon $.006 – $.010Cost Per Gallon $0.13 – $0.25Cost Per Gallon $0.0020
ExpensiveExpensiveExpensiveExpensiveInexpensive
Yearly filter/membrane adjustment or replacement.Quality may be no better than tap water.Not generally used for drinking.Not generally used for drinking.Provides great tasting, clean, odor-free water from every faucet.
Aggressive,low ph water.Plastic bottles should not be re-used.Leaves a slick feeling on skin after shower and bath.Leaves a slick feeling on skin after shower and bath.Excellent for drinking, washing, clothes, etc.
Limited amount of water avaliable.Bottle may leach PCB’s into the water.May require bi-weekly replacement and/or multiple tanks.Requires replacement of salt(sodium or potassium chloride)Effective service life varies from 10+ years.
Wastes significant amounts of water. Not good for plants or pets.Plastic bottles create environmental issues.For drinking water, requires use of reverse osmosis or bottled water. For drinking water, requires use of reverse osmosis or bottled water. NO regular Maintenance or filter changes.
 Deliveries may require driver access to garages. Not good for plants or pets. Does NOT use salt, potassium,chemicals or magnets.
Not good for plants or pets.Banned in many communities due to salt brine backwash.Installations NOT restricted by any legislation