Drinking water standard parameters and its ideal values.
The standard parameters for drinking water quality are typically defined by regulatory bodies such as the World Health Organization (WHO), the U.S. Environmental Protection Agency (EPA), and the European Union (EU). These parameters include physical, chemical, biological, and radiological aspects. Here are some key parameters and their standard values: Physical Parameters Turbidity : Should be less than 1 NTU (Nephelometric Turbidity Units). Color : Should be less than 15 TCU (True Color Units). Taste and Odor : Should be acceptable to consumers and not offensive. Temperature : Should be suitable for drinking, typically less than 25°C. Chemical Parameters pH : Should be between 6.5 and 8.5. Total Dissolved Solids (TDS) : Should be less than 500 mg/L. Hardness : Should be less than 200 mg/L as CaCO₃. Nitrate (NO₃⁻) : Should be less than 50 mg/L. Nitrite (NO₂⁻) : Should be less than 0.1 mg/L. Chloride (Cl⁻) : Should be less than 250 mg/L. Fluoride (F⁻) : Should be less than 1.5 mg/L. Sul