TDS and AQI figures on this page are indicative planning ranges compiled from publicly reported patterns for this city — not live readings. Actual values vary by locality, borewell depth and season. Test your own supply with a TDS meter (around ₹300), and get a laboratory analysis if you suspect arsenic, fluoride, nitrate or iron.
The right water purifier for Delhi is determined by what comes out of your tap, not by which brand advertises hardest. Supply in the city typically measures 320-900 ppm TDS.
Most of Delhi draws on municipal supply blended with borewell water, which is why TDS varies through the year, and local water is generally very hard.
Delhi is the hardest brief in India: Yamuna-fed piped supply in some zones, deep borewells in others, and TDS that swings from 300 ppm in central Delhi to well over 900 ppm in parts of Dwarka, Najafgarh and the trans-Yamuna belt. An RO stage is non-negotiable in most of the city, and a TDS controller matters because over-purified water tastes flat. On air, Delhi needs genuine HEPA capacity sized one room-size up from what the box claims, plus an activated-carbon bed thick enough to handle winter smog.
Delhi is well served by every major purifier brand, so you can choose on specification and price rather than on which company has a technician nearby.
Ranked for Delhi's specific water profile — 320-900 ppm TDS, very hard water.
The default recommendation for Indian borewell water
Copper RO at a price that undercuts everyone
Aquaguard's best-selling all-rounder, now with active copper
HUL's copper RO with an enforced filter-life cut-off
Service-first purifier with app-scheduled maintenance
High-throughput KENT for large families and small offices
Whatever you buy, the ownership experience in Delhiwill be decided by servicing rather than specifications. Before you order, phone the brand's customer care with your Delhi pin code and ask how many days a filter-change request takes. If the answer is more than two or three days, choose a different brand.
If you are specifying water for an office, a housing society or a factory in Delhi, a domestic purifier is the wrong tool — it will run continuously, exhaust consumables in a fraction of their rated life, and typically fail within 18 months. Commercial systems start at 25 LPH for a small office and scale to multi-thousand LPH industrial plants.
Given Delhi's feed water at 320-900 ppm and very hard hardness, antiscalant dosing or softening ahead of the membrane is usually necessary rather than optional — skipping it is the most common cause of premature membrane failure here.
Free consultation · Pan-India
Tell us your city, your water source and your budget. For homes we will recommend the right technology — including telling you when a ₹3,000 purifier is genuinely enough. For offices, societies and factories, our team will size a system against your water report and send a specification-backed quotation.
Or email betterworkindia@gmail.com — attach a water analysis report and we can quote faster.
Homes
Right-sized recommendation for your TDS, not the most expensive unit
Offices & societies
25 LPH to 2,000+ LPH, sized on headcount and feed water
Industry
Pharma, food, textile, boiler feed — engineered to your specification
Service & AMC
Installation, repair and AMC with written response times