Hard Water and Borewell Iron in Karnataka: The Numbers, the Damage, and What Actually Fixes It

CGWB data puts Karnataka in the top three states for nitrate; iron and hardness plague borewells statewide. What the numbers mean and when a softener, iron filter or RO is the right fix.
RO vs UV vs UF: Which Water Purifier Does Your Mangaluru Home Actually Need?

RO is not always the answer. Using BIS limits, the NGT’s 500 mg/L TDS rule and Mangaluru water data, here is how to match RO, UV, UF, iron filters and softeners to your actual water test.
Is Well Water Safe to Drink in Mangaluru? Here’s What the Data Says

Published studies found acidic water in 20 of Mangalore’s 60 wards, iron up to 10x the limit, and coliform bacteria in coastal wells. What the data says about well water in Mangaluru — and how to treat it.