How to Convert Hard Water
to Soft Water
If you live in Pune or anywhere across Maharashtra, chances are you deal with hard water every single day — and you may not even realise the damage it is silently causing to your skin, hair, appliances, and plumbing. The good news? Converting hard water to soft water is easier than you think.
What Is Hard Water — and Why Should You Care?
Hard water is water that contains high concentrations of dissolved minerals, primarily calcium (Ca²⁺) and magnesium (Mg²⁺). These minerals enter groundwater as it passes through limestone, chalk, and other mineral-rich rock formations — which is extremely common in Pune's borewell and municipal water supply.
The hardness of water is measured in PPM (parts per million) or mg/L. Water above 120 mg/L is generally considered hard. In many parts of Pune, water hardness frequently exceeds 300–500 mg/L — well above safe comfort levels for daily household use.
Did you know? The Bureau of Indian Standards (BIS) recommends water hardness below 200 mg/L for drinking and below 100 mg/L for domestic/household use. Most untreated borewell water in Pune far exceeds these limits.
Signs You Have Hard Water at Home
Before diving into solutions, here are the tell-tale signs that you are dealing with hard water:
Methods to Convert Hard Water to Soft Water
There are several approaches to water softening — ranging from simple home remedies to professional-grade systems. Let us explore each one and help you find the right solution for your needs.
Boiling (Temporary Hardness Only)
Boiling water removes temporary hardness caused by calcium bicarbonate. When you boil water, carbon dioxide is released and calcium carbonate precipitates as a white solid at the bottom. Skimming or filtering this off leaves slightly softer water.
Limitations: Boiling does not remove permanent hardness caused by calcium sulphate or magnesium compounds. It is also energy-intensive and impractical for everyday household needs like bathing, washing, or running appliances.
Using Washing Soda (Sodium Carbonate)
Adding washing soda (Na₂CO₃) to hard water causes calcium and magnesium ions to precipitate out as their respective carbonates. The resulting water has a much lower hardness level.
Limitations: This method is useful only for laundry and cleaning, not for drinking water or personal care. It adds sodium to the water and requires careful dosing.
Lime Softening (Chemical Precipitation)
Adding lime (calcium hydroxide) to water raises its pH, causing calcium and magnesium to precipitate out as carbonates and hydroxides. The water is then filtered to remove the solids.
Limitations: This is mainly a large-scale industrial method. It requires precise chemical dosing, produces large amounts of sludge, and is unsuitable for residential use.
Reverse Osmosis (RO) Filtration
RO systems push water through a semi-permeable membrane that blocks dissolved minerals including calcium and magnesium. The output water is significantly softer and purer.
Limitations: RO systems are primarily for drinking water. They are not suitable for whole-house or bathroom water softening. They also waste a significant volume of water as reject water and remove beneficial minerals too.
Ion Exchange Water Softener Best Solution
This is the gold standard for water softening — and the technology that powers all LSOMM Aqua water softener systems. An ion exchange softener passes hard water through a resin bed loaded with sodium ions. As the water flows through, calcium and magnesium ions swap places with sodium ions, resulting in genuinely soft water. The resin is periodically recharged using common salt (NaCl).
This method effectively removes both temporary and permanent hardness and can treat the entire household water supply — bathrooms, kitchen, washing machine, geyser, and more — in a single pass.
Why it is the best: No electricity required (in many models), continuous soft water supply, reduces hardness by 90–95%, low maintenance, and long system life. Perfectly suited for Pune's high-hardness borewell and municipal water.
Comparing All Hard Water Treatment Methods
| Method | Hardness Removed | Whole-House Use | Low Maintenance | Cost-Effective |
|---|---|---|---|---|
| Boiling | Temporary only | ✗ | ✗ | ✗ |
| Washing Soda | Partial | ✗ | ✗ | ✓ |
| Lime Softening | High (industrial) | ✗ | ✗ | ✗ |
| RO Filtration | High (drinking only) | ✗ | ✓ | ✓ |
| Ion Exchange Softener | 90–95% (all types) | ✓ | ✓ | ✓ |
How Does an Ion Exchange Water Softener Work?
Here is a simple, step-by-step breakdown of the ion exchange process that LSOMM Aqua systems use:
Step 1 — Hard Water Enters the Softener Tank
Your incoming borewell or municipal supply water (loaded with calcium and magnesium ions) enters the resin tank from the top.
Step 2 — Ion Exchange Occurs in the Resin Bed
The resin beads inside the tank are pre-charged with sodium ions. As the hard water passes through, calcium and magnesium ions are attracted to the resin beads and exchange places with sodium ions. The water leaving the bottom of the tank now carries sodium ions instead of hardness-causing minerals.
Step 3 — Soft Water Is Distributed Throughout Your Home
The treated soft water flows through your home's plumbing to reach every bathroom, kitchen tap, washing machine, geyser, and overhead tank.
Step 4 — Regeneration Using Salt
Over time, the resin beads become saturated with calcium and magnesium. During the regeneration cycle, a brine solution (common salt dissolved in water) is passed through the resin bed. The sodium ions from the brine displace the hardness minerals, which are then flushed out as waste water. The resin is now recharged and ready for the next softening cycle.
LSOMM Aqua Advantage: Our water softeners use food-grade resin and require only common salt for regeneration — no expensive chemicals, no electricity in manual models. A simple, sustainable solution that works reliably day after day.
Benefits of Soft Water in Your Home
Switching to soft water delivers noticeable improvements across every part of your daily life:
🌿 Healthier Skin & Hair
Soft water lathers well with soap, leaving skin moisturised and hair smooth without mineral residue.
🔧 Longer Appliance Life
Geysers, washing machines, and dishwashers last significantly longer without scale buildup inside.
💧 Cleaner Bathrooms
No more white stains on tiles, glass, or taps. Cleaning requires far less effort and fewer chemicals.
👗 Softer, Brighter Clothes
Detergents work better in soft water, resulting in cleaner, softer laundry that lasts longer.
⚡ Energy Savings
Scale-free geysers heat water faster and more efficiently, reducing your electricity bill by up to 25%.
🏠 Protected Plumbing
Soft water prevents pipe corrosion and blockages, saving expensive plumbing repairs.
How to Choose the Right Water Softener for Your Needs
Selecting the right system depends on your daily water consumption, the number of people in the household or commercial unit, and your source water hardness. Here is a quick guide:
| Application | Recommended Capacity | LSOMM Product |
|---|---|---|
| 1–2 Bathrooms / Flat | 500 LPH | 500LPH Bathroom & Geyser Softener |
| 3–4 Bathrooms / Villa | 1000–1500 LPH | 1000 / 1500 LPH Whole-House Plant |
| Apartment Building / Society | 2000–3000 LPH | 2000 / 3000 LPH Automatic FRP Plant |
| Commercial / Industrial | 10,000 LPH+ | 10000 LPH Industrial Softener Plant |
Pro Tip: Always get your source water tested before purchasing a softener. LSOMM Aqua offers free water hardness testing to help you choose the right capacity system for your home or building.
Maintaining Your Water Softener — Simple Tips
A properly maintained water softener can last 10–15 years with minimal hassle. Here is what you need to do:
- Replenish the salt tank regularly — use only high-quality resin-grade salt.
- Perform regeneration cycles as recommended (manual or automatic depending on your model).
- Clean the brine tank once a year to prevent salt bridges from forming.
- Check for resin bead degradation every 4–5 years and replace if needed.
- Schedule an annual service check with your LSOMM Aqua technician.
Conclusion
Hard water is a widespread problem across Pune and Maharashtra, quietly damaging your home, health, and finances. While there are several methods to soften water, the ion exchange water softener remains the most effective, reliable, and cost-efficient solution for both domestic and commercial use.
At LSOMM Aqua Solutions, we have been manufacturing and installing high-performance water softeners since 2010. Whether you need a compact unit for a single bathroom or a large-capacity plant for a residential society, our team is ready to help you find the perfect solution.
Say goodbye to limescale, hair fall, stiff laundry, and damaged appliances. Make the switch to soft water today — your home and health will thank you.