Hard water is one of the most common water problems in Indian homes, especially on borewell supply. This guide brings together everything you need to understand, choose, and run a water softener — each section links to a detailed guide.
Before anything else, work out whether hard water is actually your problem — the signs are on your taps, dishes, skin, and appliances.
Read: 7 signs you have hard water at home
Hardness is measured in mg/L (ppm). Knowing your number tells you whether you need a softener and what size. You can test at home or send a sample to a lab.
Read: How to test water hardness at home
Softeners aren't one-size-fits-all. The right capacity depends on your water hardness, household size, and daily water use.
Read: What size water softener do I need?
The most common confusion. A softener treats hardness to protect appliances; a purifier makes water safe to drink. Many homes need both, for different reasons.
Read: Water softener vs water purifier
The main ongoing cost is salt for regeneration. How much you use depends on your hardness and consumption.
Read: How much salt does a water softener use?
Where a softener goes affects how well it works and how easy it is to maintain. Point-of-entry and point-of-use setups suit different needs.
Read: Where to install a water softener
Hardness varies across India. Local guides:
Read: Hard water in Bangalore — why it happens and how to fix it
Read: Hard water in Chennai — causes, salinity and how to fix it
Read: Hard water in Hyderabad — why it happens and how to fix it
Read: Hard water in Delhi NCR — why it happens and how to fix it
Read: Hard water in Coimbatore — why it happens and how to fix it
Read: Hard water in Pune — why it happens and how to fix it
Read: Hard water in Jaipur — why it happens and how to fix it
Read: Hard water in Nagpur — why it happens and how to fix it
Read: Hard water in Indore — why it happens and how to fix it
Read: Hard water in Lucknow — why it happens and how to fix it
Read: Hard water in Nashik — why it happens and how to fix it
Read: Hard water in Vadodara — why it happens and how to fix it
Read: Hard water in Madurai — why it happens and how to fix it
Read: Hard water in Kanpur — why it happens and how to fix it
Read: Hard water in Patna — why it happens and how to fix it
Read: Hard water in Bhopal — why it happens and how to fix it
Read: Hard water in Vijayawada — why it happens and how to fix it
Read: Hard water in Visakhapatnam — why it happens and how to fix it
Read: Hard water in Rajkot — why it happens and how to fix it
Read: Hard water in Trichy — why it happens and how to fix it
Read: Hard water in Salem — why it happens and how to fix it
Read: Hard water in Mumbai — why it happens and how to fix it
Read: Hard water in Kolkata — why it happens and how to fix it
Read: Hard water in Ahmedabad — why it happens and how to fix it
Read: Hard water in Erode — why it happens and how to fix it
Read: Hard water in Surat — why it happens and how to fix it
Test your water first, understand whether your problem is hardness or drinking-water quality, then size and install the right softener. Each guide above covers one step in detail. If you're just starting, begin with the signs of hard water.
Work out what you're dealing with, then match it to a unit.