The Challenge
Raw water from rivers, borewells, and reservoirs is rarely fit for direct use.
Indian groundwater often carries fluoride, arsenic, iron, and hardness at levels that damage boilers, corrode pipes, and contaminate products. Surface water carries turbidity, bacteria, and seasonal variation that no process can tolerate. NWPL's Water Treatment Plants (WTPs) convert whatever source you have into the exact water quality your process, boiler, or cooling system requires.
mg/L TDS — the highest groundwater TDS NWPL has successfully treated for industrial reuse
How It Works
Clarification, softening, and polishing — in the right sequence.
WTP design begins with a detailed source water analysis. Every stage is sized for your specific impurity profile — not a generic catalogue design.
Clarification
Coagulation, flocculation, and sedimentation remove turbidity, colour, and suspended solids from raw surface water or high-turbidity borewell water. Tube settlers or lamella clarifiers compact the process footprint by 50% versus conventional designs.
Softening & DM
Ion exchange softeners remove calcium and magnesium (hardness), protecting downstream boilers and heat exchangers from scale. Demineralisation (DM) plants or RO systems remove TDS to the level required by your process or boiler operating pressure.
Polishing & Disinfection
Multimedia filtration, activated carbon, and UV/chlorination ensure the water is clear, low-TOC, and microbiologically safe. For pharmaceutical and food applications, a final RO or EDI stage delivers USP-grade purity.
Technical Specifications
Built for precision.
| Parameter | Value / Range |
|---|---|
| Capacity range | 10 KLD – 10 MLD |
| Inlet turbidity (surface water) | up to 500NTU |
| Outlet turbidity | < 1NTU |
| Hardness removal | > 95% |
| Iron removal | > 95% |
| Fluoride removal (if applicable) | To BIS IS 10500 < 1mg/L |
| DM plant outlet TDS | < 10mg/L |
| Boiler feed WTP classes | LP (≤17 bar), MP (17–40 bar), HP (>40 bar) |
Case Study
Proven in the field.
Food Processing WTP — 500 KLD, Pune, Maharashtra
Raw river water (turbidity 120 NTU, TDS 380 mg/L) converted to FSSAI-compliant process water at 0.3 NTU, <50 mg/L TDS. Boiler feed polished to conductivity <5 µS/cm. Zero product contamination incidents in 2 years of operation. FSSAI audit cleared with commendation.
View all projectsCompliance Context
BIS, FSSAI, and boiler standards — designed in from day one.
Water quality compliance is a moving target: FSSAI, BIS IS 10500, and boiler feed standards each specify different parameters. NWPL's WTPs are designed against the most stringent standard applicable to your end use, and all equipment — from the clarifier to the DM plant — is sized for the worst-case seasonal variation in your source water quality.
BIS IS 10500:2012 — Drinking water specification
FSSAI Food Safety and Standards Regulations, 2011
IBR (Indian Boiler Regulations) — Boiler feed water quality
ASHRAE 188 — Legionella risk management for cooling systems
WHO Guidelines for Drinking Water Quality (4th ed.)
What could you save?
Calculate your NPV, IRR & payback period
Frequently Asked
Common questions answered.
Related Industries
Designed for your sector.
Request a Technical Audit for Water Treatment.
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