If you know Tirupur, you know it for textiles. Knitwear exports, dyeing units, industrial water use. That's the city. And that's exactly why growing food here is interesting - and why I take water seriously.
Tirupur's water has a history. Decades of textile processing have left their mark on the local water table. The Noyyal River carries the memory of effluent. You can taste it in the borewells in parts of the city. I'm not saying this to scare anyone. I'm saying it because it's why I use RO filtration, and why that's not a marketing decision - it's a practical one.
My setup runs a 7-stage reverse osmosis system. Water comes out below 20 parts per million total dissolved solids. It gives me a clean, measurable baseline before a seed touches the tray. I didn't build it to put on a label. I built it because the alternative was growing on water I wouldn't trust.