Water Quality Engineering

Water sampling and monitoring ensure that measured quality truly represents field conditions and remains legally defensible. Correct sampling design is as important as laboratory precision.

BOD, COD, and TOC are complementary indicators for quantifying organic pollution and treatment performance. Each metric captures a different fraction or behavior of organic matter.

Drinking-water standards define acceptable contaminant limits to protect health and ensure palatability. Indian engineers primarily use IS 10500 with practical reference to WHO guidance and local risk profiles.

Aquatic chemistry explains how dissolved species interact to control pH, oxygen balance, and nutrient behavior in natural waters. It provides the theoretical base for understanding eutrophication and self-purification.

Water-quality modelling predicts pollutant transport and transformation in rivers, lakes, and reservoirs to support engineering decisions. It translates field data into forecasted concentration profiles under different scenarios.