Water Purity means “not harmful.” Scientists and technologists cannot impose solutions on citizens which guarantee water purity. Water policies need to be based on sound science and evidence to be successful. Consumers, citizens, politicians, scientists, and the Health Guardian must all work together to achieve success.

   Healthy water is used for drinking, recreation, sanitation and hygiene, agriculture, industry, and medical practices. Getting enough water every day is important for your health. Healthy people meet their fluid needs by drinking when thirsty and drinking with meals. Most of your fluid needs are met through the water and beverages you drink. However, you can get some fluids through the foods that you eat. For example, broth soups and foods with high water content such as celery, cucumbers,  tomatoes, or melons can contribute to fluid intake.

   The Health Guardian is concerned about the purity levels of water, and maintains the healthy water levels used by the body for lubricating cartilage found in joints and the disks of the spine. Long-term dehydration can reduce the joints' shock-absorbing ability, leading to joint pain.

   Healthy water helps form saliva and mucus. Saliva helps us digest our food and keeps the mouth, nose, and eyes moist. This prevents friction and damage. Drinking water also keeps the mouth clean. Consuming water instead of sweetened beverages, can also reduce tooth decay.

   Healthy water delivers oxygen throughout the body. Blood is more than 90 percent water, and blood carries oxygen to different parts of the body. It also boosts skin health and beauty. With dehydration, the skin can become more vulnerable to skin disorders and premature wrinkling.

   Healthy water cushions the brain, spinal cord, and other sensitive tissues. Dehydration can affect brain structure and function. It is also involved in the production of hormones and neurotransmitters. Prolonged dehydration can lead to problems with thinking and reasoning. Water helps regulate body temperature. Water that is stored in the middle layers of the skin comes to the skin's surface as sweat when the body heats up. As it evaporates, it cools the body. Some scientists have suggested that when there is too little water in the body, heat storage increases and the individual is less able to tolerate heat strain. Having lots of water in the body may reduce physical strain, if heat stress occurs during exercise.

   The digestive system depends on access to healthy water. The bowel needs water to work properly. Dehydration can lead to digestive problems, constipation, and an overly acidic stomach. This increases the risk of heartburn and stomach ulcers. The digestive system flushes body waste. Water is needed in the processes of sweating and removal of urine and feces. It also helps maintain blood pressure. A lack of water can cause blood to become thicker, increasing blood pressure.

   Our airways need healthy water as well. When dehydrated, airways are restricted by the body in an effort to minimize water loss. This can make asthma and allergies worse. Water also makes minerals and nutrients accessible to the rest of the body. These dissolve in water, makes it possible for them to reach different parts of the body. Healthy water helps prevent kidney damage. The kidneys regulate fluid in the body. Insufficient water can lead to kidney stones and other problems. It boosts physical performance during exercise. Some scientists have proposed that consuming more water might enhance performance during strenuous activity. It has been shown that dehydration reduces performance in activities lasting longer than 30 minutes.

   Healthy water may also help with weight loss, if it is consumed instead of sweetened juices and sodas. "Preloading" with water before meals can help prevent overeating by creating a sense of fullness. When drinking lots of alcohol, water also reduces the chance of a hangover, and unsweetened soda water with ice and lemon alternated with alcoholic drinks can help prevent an overconsumption of alcohol.