The engine's answer
Best water purifier on municipal supply for low running cost
Tata Swach
Cristella Advance (gravity)
92% match · ₹2,449
No electricity, no plumbing — safe water for soft municipal supply.
The numbers that decided it
- Technology
- gravity
- Storage
- 18 L
- Output
- 3 L/h
- Handles hard water
- No
Why it wins
Tata Swach Cristella Advance (gravity) scores 92% for low running cost on municipal supply. It purifies by gravity, delivers 3 L/h with a 18 L tank, is meant for softer supplies, and lists at ₹2,449.
Upkeep is cheap: few filter changes and no service contract needed.
What came close
- Kent Grand Plus RO+UV+UF76%India's classic RO with TDS control — built for borewell water. · ₹17,499
- HUL Pureit Copper+ Eco RO+UV+MF76%Adds real copper goodness and saves 60% more water than typical RO. · ₹16,999
- A. O. Smith Z8 Green RO (hot water)68%Instant hot purified water and near-zero wastage — premium done right. · ₹26,900
What the runners-up gave up
- Kent Grand Plus RO+UV+UF (76%) costs more to maintain (Medium upkeep).
- HUL Pureit Copper+ Eco RO+UV+MF (76%) costs more to maintain (Medium upkeep).
- A. O. Smith Z8 Green RO (hot water) (68%) costs more to maintain (High upkeep).
Questions people ask
- Is gravity right for municipal supply?
- Yes. Municipal supply is normally low in dissolved salts, so gravity is enough and wastes no water.
- How much water does it deliver?
- 3 litres an hour with a 18 L tank, sized here for a household of three or four.
- What does it cost to maintain?
- Upkeep is cheap: few filter changes and no service contract needed.
Change an assumption
This page answers one household's question. Yours is not that question — run the quiz and the whole shortlist re-ranks around your room, your water and your budget.
Answer for your own home