Which five quality parameters of the raw water may not meet drinking water standards?
To determine which five quality parameters of raw water may not meet drinking water standards, you can refer to the specific drinking water standards set by your local or national regulating authority. These standards typically outline limits or guidelines for various contaminants and parameters in raw water.
Here is a general list of five common quality parameters that may not meet drinking water standards:
1. Turbidity: Raw water with high turbidity levels contains suspended solids, such as sediment or organic matter, which can affect water clarity. High turbidity is undesirable as it can lead to cloudiness and can be an indicator of potential health risks.
2. pH Level: The pH level represents the acidity or alkalinity of water. Raw water with extreme pH values can indicate contamination or a lack of balance in the water's chemistry, making it unsuitable for drinking.
3. Total Dissolved Solids (TDS): TDS refers to the concentration of inorganic salts, minerals, and other substances dissolved in water. Elevated TDS levels in raw water can affect the taste, odor, and overall quality of drinking water.
4. Microorganisms: Raw water may contain harmful microorganisms, such as bacteria, viruses, or protozoa, which can cause waterborne diseases. If the raw water is not treated properly, these microorganisms may not meet drinking water standards.
5. Heavy Metals: Raw water can be contaminated with heavy metals, such as lead, arsenic, mercury, or cadmium, which can have detrimental effects on human health. These metals may enter water sources due to natural processes or industrial activities and may not meet drinking water standards if their concentrations exceed permissible limits.
Please note that the specific parameters and their allowable limits may vary depending on your location and the applicable regulations. Checking with your local or national water regulatory agency will provide you with the most accurate and up-to-date information regarding drinking water standards.