About This Series: How Pollution Is Measured?
You have heard that a river is “polluted.” But how does anyone actually know that? What gets tested, who tests it, and what do those numbers mean? This series answers exactly that — in plain language, with no assumptions about your background.
Whether you are a volunteer trying to understand a test-kit reading, a student preparing for an exam, or a practitioner interpreting a monitoring report, this series gives you a solid foundation.
The four parts
Section titled “The four parts” 01 · Water Quality Parameters What exactly is measured in a river — BOD, DO, pH, turbidity, nitrates, heavy metals, and more. What each parameter tells us and why it matters.
02 · Monitoring Methods How water samples are collected, where monitoring stations are placed, who runs them, and how data flows from river to report.
03 · Reading Data and Reports How to interpret a water quality index, read a CPCB report, and understand what 'acceptable limits' actually mean in practice.
04 · Field vs. Lab Testing The difference between on-site field testing and lab analysis — when each is used, what trade-offs exist, and what citizen scientists can realistically do.