This document discusses sources of water pollution and general physical and chemical measurements of water quality. It covers topics like different sources that can pollute water supplies as well as basic tests that can be done to analyze water samples for factors like pH, dissolved oxygen, and other chemical components. The document provides an overview of environmental laboratory work analyzing water quality.

1. ENVIRONMENTAL
LABORATORY
Muhammad Fahad Ansari 12IEEM14

6. SOURCES OF
WATER

20. Pollution of
Water

35. GENERAL PHYSICAL
& CHEMICAL
MEASUREMENTS