Measuring Water Quality


Water is mandatory for the survival of any life form in the world. Water is the source of all life. However, water can also cause harm if it is contaminated with harmful chemicals and pollutants. The current article provides some of the key indicators for measuring water quality, recommended water quality standards, and the importance of water purification by using water purifiers.

Key Indicators of Water Quality

The following are the key indicators of water quality:


Water which is high in mineral content is known as hard water. Calcium and magnesium are two most common minerals which when present in excessive quantities, make the water hard. The degree of water hardness is directly proportional to the concentration of calcium and magnesium in it. Water needs to be treated with water purifier to remove water hardness and make it healthier for consumption.

pH Levels

pH levels of water denote its acid-base equilibrium. It is generally controlled by the carbon dioxide-bicarbonate-carbonate equilibrium system. This means that an increase in CO2 concentration in water will lower its pH, while a decrease in CO2 will increase the pH levels. pH level of 7 is neutral, anything above 7 is alkaline, and below 7 is acidic in nature. The recommended pH levels for safe drinking water should be in the range of 6-8.5. pH levels below 4.5 and above 9.5 are highly unfit for consumption. pH also impacts the solubility of organic compounds, metals, and salts. Low pH levels can also make the water corrosive and dangerous for human consumption.

Level of Total Dissolved Solids (TDS)

The concentration of total dissolved solids (TDS) in the water denotes the amount of dissolved material in it. It represents the inorganic salts and small amounts of organic material present in water. TDS usually include minerals like calcium, magnesium, sodium, potassium cations, hydrogen carbonate, potassium carbonate, chloride, sulfate, and nitrate ions. Natural weathering, industrial waste, sewage, and agriculture are major sources of TDS in water. The high degree of TDS makes the water unsuitable for drinking purpose. Very low concentration of TDS also results in the undesirable taste of drinking water.

Level of Metals

Metals can be found in water either due to natural weathering of rocks and soil or from industrial waste. Some metals like copper, manganese, and zinc are required to be present in small quantities in water for ensuring a biochemical process for sustaining life. However, the excessive presence of these metals can cause harm to humans or animals if they consume it. Dissolved metals are usually more toxic than metals bound in complexes with other molecules. Heavy metals like lead, arsenic, etc. are also dangerous for human consumption and needs to be removed or filtered from the water to make it safe for drinking.

Level of Chemicals

Water can also be polluted by industrial wastes. Some industrial wastes like polychlorinated biphenyls (PCBs) are extremely dangerous and make the water unfit for human and animal consumption. Consuming water contaminated with PCBs can lead to many health issues and can impact the immune system, reproductive, nervous, and endocrine systems. PCBs have highly stable which makes them difficult to break down. Due to their resistance to degradation, they are difficult to remove from the water. The water contaminated with PCBs need to be purified using high-quality water purification systems for making it fit for human and animal consumption.

measure water quality

measure water quality

Recommended Water Quality Standards

The World Health Organization (WHO) lays down the global standards for water quality. The regulatory bodies and governments in different countries have their own specific water quality standards. The Bureau of Indian Standards (BIS) specifies water quality standards in India. The IS 10500:2012 quality standard prescribes the quality of water in India. According to this standard, the pH value of water should range between 6-8.5 for making it fit for consumption. Total hardness (concentration of CacO3) should not be more than 200mg per liter while the iron content should be within 0.3 mg/liter. The TDS content should be 500mg/liter while the taste and odor of the water should be agreeable.

Key Indicators of Water Quality

Key Indicators of Water Quality

Side Effects of Excessive Fluoride in Water

When fluoride is present in an excessive concentration in water, it can lead to health issues in humans. Most of us can take fluoride in small quantities up to 20mg per day without any side effects or health problems. The high concentration of fluoride in water can cause dental fluorosis which can cause small white specks on the enamel. Though this does not directly affect dental health, it can cause discoloration. Excessive fluoride content in water can also cause skeletal fluorosis which causes the bones to become hard and less elastic, thereby increasing the chances of fractures. Excess fluoride can also damage the thyroid gland and cause uncontrolled secretion of parathyroid hormones. This can cause depletion of calcium from the bones and make them weaker and vulnerable to fractures. Some studies have indicated that high fluoride content in water can impact the cognitive abilities of children.

Need for Filtered Water from Water Purifiers

Water purifiers clean and purify the water and make them suitable for human consumption. The following are the need for filtered water from water purifiers:

Purifies Water

Water purifiers are excellent appliances which remove any form of contaminants and impurities from water. It removes TDS, hard metals, chemicals, etc. from water and makes it perfectly healthy for your drinking purposes.

Keeps You Energized

A glass of filtered and purified water keeps you hydrated and energized throughout the day. It is much healthier than consuming tea or coffee to keep you energized as they may dehydrate you and leave you jittery.

Helps Digestion

Water purifiers clean water and make them nutrient-rich which aids considerably in the digestion process. The filtered and purified water helps to break down the food you consume better and allows your body to absorb the nutrients from it.

Saves Money

With good quality water purifier, your family can enjoy pure and safe drinking water. This protects them from different water-related health problems and helps you save money towards the cost of medication. Your appliances will also have greater lifespan due to the removal of minerals which can otherwise cause them to malfunction.

Testing kits for evaluating the quality of water

Water is an important source needed for everyone to live a healthy life. At the same time, it is necessary to test the quality of water with special attention for preventing health risks to a large extent. There are several sources available for this purpose and one should know more about them in detail that can help to get more ideas easily. The first step is sending a sample to a nearby laboratory that enables people to know the test reports. However, it takes more time to get a report from a laboratory that requires an alternate solution.

A water testing kit is a suitable one for measuring substances in water that contribute more to compare the standards with local authorities. Another thing is that it allows people to implement preventive measures against hazards and other problems caused by drinking water. Those who want to know more about water testing kits can search for the details from different sources that can help to make a better decision. The kit is very small in size and one can immerse the same in water easily that gives ways to determine the quality with accurate results.

Why water testing kit is important?

The drinking water may contain several contaminants which can lead to health problems. A high presence of metals such as lead, copper, zinc, chromium, and mercury in water will affect the living standards of a person that needs special attention. Having a water testing kit may result in many advantages and some of them include:

  • Allows users to find the percentage of contamination levels
  • Helps to know whether the water contains contents of legionella bacteria or not
  • Enables users to evaluate the results in quick turnaround time
  • Gives ways to analyze the hardness, alkalinity, and chlorine levels of water
  • Lets users to protect health from illnesses and other problems

How to buy a water testing kit online?

The process of choosing a water testing kit involves several challenges and one should get more ideas from various sources. Anyone who buys a product should follow the below steps which can help to meet essential needs.

1)Brand Brand is the most important thing to consider while buying a new product from the markets. One should compare the brands in detail which ultimately gives ways to choose the right product according to needs.

2)Functions It is important to focus more on the features when buying a kit. This, in turn, paves ways to test water-based on various parameters and indicators for generating a detailed report.

3) Prices The price is another factor to consider in the water kit buying process and customers can compare rates offered by different manufacturers that can help to select a product at estimated budgets.

4) The number of tests Customers should know the number of tests provided by a test kit before purchasing a product from the markets.

5) Product Reviews It is necessary to read product reviews online that can help to buy a high-quality product based on the choices.

6) Purpose- A water testing kit is available for a home, pool, aquarium and other application. It is necessary to determine the purpose before buying a product.



How to use a water testing kit?

Most water testing kits usually come with a package of strips that contain reactants. They will change colors which allow users to know the presence of various contaminants in water. A water testing kit displays the following results after immersing the device.

  • Presence of heavy metals and PH levels
  • Hardness of water
  • Presence of bacteria and cyanuric acid
    tds metertds meter


  • The water testing kits are compact in size
  • Easy to use with simple instructions
  • Quick and accurate results
  • No need for dilution
  • Requires no lubrication
  • Allows users to test water under several parameters
  • Multipack options
  • Single & multiple tests
  • Comes with TDS features for a home
  • Affordable rates
  • Easy maintenance
  • Water test kits come in various forms
  • Helps to determine the quality of water with the best results
  • Enables users to test water that complies with local jurisdictions
  • Prevents health hazards with the latest features


  • Some products don’t come with manual instructions
  • Certain kits are highly expensive
  • Need extensive research before buying a product from the markets