Comparing Water Filters and Reverse Osmosis (RO) Systems

Comparing Water Filters and Reverse Osmosis (RO) Systems

Compare water filter and reverse osmosis systems on the basis of water purity, contaminants they remove, and best suited for different household needs.

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In summary

A water filter and a reverse osmosis (RO) system serve different needs. Water filters are suitable for common impurities, while RO systems provide deeper purification for contaminated water.

  • Water filters are available from around Rs. 5,000.
  • Reverse osmosis systems start from around Rs. 12,000.
  • Water filters remove chlorine, sediment, and some bacteria.
  • RO systems remove heavy metals, dissolved solids, bacteria, and microorganisms.
  • Water filters generally need less maintenance.
  • RO systems are suitable for areas with poor water quality.


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Overview of water filters and reverse osmosis (RO) systems

Water filters clean water by trapping dirt, chlorine, and other impurities. Reverse osmosis, or RO, uses pressure and a semi-permeable membrane to remove contaminants and create treated water. Water filters clean water by trapping dirt, chlorine, and other impurities. Reverse osmosis, or RO, uses pressure and a semi-permeable membrane to remove contaminants and create treated water. RO systems are often installed under the sink and may include pre-filters, a membrane, and a storage tank. For many homes, a standard filter is enough for basic taste and odor issues, while RO makes more sense when water quality concerns are more serious.

Water filters vs RO systems

Water filters and RO systems both clean water, but they handle different levels of contamination. A filter traps dirt, sand, chlorine, and some chemicals. An RO system removes far more contaminants by pushing water through a tiny membrane.


FeatureWater filterRO system
How it worksTraps contaminants in filter materialPressure forces water through a semi-permeable membrane nsf+1
Contaminants removedChlorine, dirt, some chemicals, improves tasteLead, arsenic, PFAS, VOCs, bacteria, viruses, salts, TDS epa+1
WastewaterLittle to none5–10 gallons of reject water per gallon of treated water epa+1
MineralsKeeps beneficial minerals (calcium, magnesium)Removes all minerals; may need re-mineralization briowater+1
Best forBasic taste/odor issues, municipal waterPoor water quality, high TDS, heavy metals, PFAS epa+1
InstallationSimple, often pitcher or faucet-mountedUnder-sink, requires plumbing, drain, dedicated faucet epa+1
MaintenanceReplace filter every 6–12 monthsReplace sediment/carbon filters every 6–12 months; membrane every 1–2 years
CostLower upfront and maintenance costHigher upfront and maintenance cost

Water filters vs RO systems - Price comparison

Water filters are more affordable upfront, while RO systems cost more but remove far more contaminants like lead, arsenic, PFAS, and bacteria.


ModelPrice
Eureka Forbes Eureka (water filter)Rs. 5,000
Livpure Zing Plus (water filter)Rs. 7,000
Kent Maxx Star (water filter)Rs. 8,725–Rs. 9,190
Aquaguard Superio (water filter)Rs. 12,888
Kent Ace Lite (water filter)Rs. 10,000–Rs. 12,500
Livpure Glo Plus (RO system)Rs. 12,000
Pureit Pro (RO system)Rs. 14,000
Aquaguard Sure Champ Ro (RO system)Rs. 9,000–Rs. 11,000
Aquaguard Eden 9-Stage (RO system)Rs. 21,999
AO Smith X4+ (RO system)Rs. 17,500
AO Smith Puritee+ X7 (RO system)Rs. 12,869
Kent Grand Plus (RO system)Rs. 18,500–Rs. 19,500
Kent Pearl Star (RO system)Rs. 18,000–Rs. 20,000
Kent Grand Star (RO system)Rs. 22,190
AO Smith X5+ (RO system)Rs. 22,800
AO Smith Z6 + Hot (RO system)Rs. 15,699

Disclaimer: Each model's features, availability, and pricing are subject to change and may vary. For the most accurate and up-to-date information, please visit the official website.


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