SPML Infra Limited | Blogs & Articles

12 Oct 2026water infrastructure

Water Hammer and Surge Protection in Pumping Mains

When a pump trips during a power failure, the water inside a long pumping main doesn't stop at the same moment. It keeps moving under its own momentum, and that sudden mismatch between the pump and th...

09 Oct 2026water treatment

What Is a District Metered Area (DMA) and How It Cuts NRW

Across Indian cities, a large share of treated water never earns a rupee of revenue. Industry estimates put the national average for non-revenue water (NRW) at roughly 38 to 45 per cent, and some util...

07 Oct 2026water treatment

Water Treatment Plant Process Explained: Intake to Distribution

In August 2019, only about 16.7% of India's rural households had a tap connection. By March 2026, that figure had crossed 81%, with about 15.83 crore households connected under the Jal Jeevan Mission....

16 Sept 2026power transmission

How Electricity Moves from Power Plants to Consumers: A Complete Step-by-Step Guide

Every time you flip a light switch, turn on an air conditioner, or plug in a smartphone, power instantly responds. Yet, electricity is not stored in massive holding tanks near your neighbourhood; it i...

15 Sept 2026water infrastructure

Water Level Monitoring Systems: A Complete Guide

Water level data drives decisions across almost every part of water infrastructure: when to open a spillway, whether a groundwater source needs recharge, how much a canal should release, or whether a ...

14 Sept 2026water management

What Is Integrated Water Management and Why Does It Matter?

India's water systems are under pressure. Rural households are being connected to piped water faster than ever, yet cities are losing groundwater, rivers are absorbing untreated sewage, and monsoon ra...

10 Sept 2026battery energy storage

What Is a Battery Energy Storage System? How It Works, Types, and Benefits

A Battery Energy Storage System, or BESS, stores electricity so it can be used later instead of the moment it is generated. That sounds simple, but it solves one of the oldest problems in the power in...

09 Sept 2026water treatment

MLD vs MGD in Water Treatment: What the Two Units Actually Mean

If you have come across project reports, tender documents, or old water supply schemes in India, you have probably seen plant capacity written two different ways: sometimes in MLD, sometimes in MGD. B...

09 Sept 2026battery energy storage

How Battery Energy Storage Helps Stabilise the Power Grid

Power grids are losing their shock absorbers. For decades, spinning turbines inside coal, gas, and hydro plants gave the grid inertia. That inertia slowed down frequency swings. It bought operators ti...

08 Sept 2026water treatment

The Sewage Treatment Plant Process, Explained Stage by Stage

Domestic wastewater, the water that leaves your toilets, kitchens, and washbasins, can't be discharged as it is. It carries organic waste, pathogens, and suspended solids that would contaminate ground...

08 Sept 2026water treatment

How to Choose an Efficient Effluent Treatment Plant for Your Textile Unit

Textile dyeing and processing units produce some of the most difficult wastewater to treat in Indian manufacturing. High color load, fluctuating pH, heavy metals from dyes, and large volumes of total ...

19 Aug 2026

EPC vs Turnkey Contracts: What's the Difference for Infrastructure Buyers?

In large-scale infrastructure development, whether water treatment plants, municipal supply networks, thermal and hydro power plants, or waste management facilities, selecting the right contracting st...