02 · Monitoring Methods

Coming Soon

What this article covers

Knowing what to measure is only half the story. How we measure — and who does the measuring — shapes whether the resulting data is reliable, representative, and actually used.

This article will cover:

• Grab sampling vs. composite sampling: the difference between a one-time snap shot and an averaged sample, and when each is appropriate
• Continuous monitoring stations: how real-time sensor networks work, what they measure, and their limitations
• India’s monitoring infrastructure: the CPCB and State PCB networks, the National Water Quality Monitoring Programme (NWQMP), and where the gaps are
• Citizen science monitoring: what ordinary people can measure, which protocols are trusted, and how their data is (or is not) integrated into official records
• Spatial coverage problems: why most of India’s rivers are monitored at only a handful of points, and what that means for the data we trust

A critical gap to know early

India monitors water quality at roughly 1,700 stations across the country. For a river system as vast and complex as India’s, this means enormous stretches — including many holy river corridors — have no systematic monitoring at all. Much of what we “know” about river health is extrapolated.

Full article coming soon

This page is a placeholder. The complete article is being written and will include diagrams of the monitoring workflow and a map of CPCB station coverage.